Camera_driver: refactored version of camera driver
This commit is contained in:
Petr Malanik
@ -0,0 +1,63 @@
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/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: BasicMathFunctions.c
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* Description: Combination of all basic math function source files.
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*
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* $Date: 18. March 2019
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* $Revision: V1.0.0
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*
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* Target Processor: Cortex-M cores
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* -------------------------------------------------------------------- */
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/*
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* Copyright (C) 2019 ARM Limited or its affiliates. All rights reserved.
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*
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||||
* SPDX-License-Identifier: Apache-2.0
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*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
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#include "arm_abs_f32.c"
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#include "arm_abs_q15.c"
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#include "arm_abs_q31.c"
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#include "arm_abs_q7.c"
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#include "arm_add_f32.c"
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#include "arm_add_q15.c"
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#include "arm_add_q31.c"
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#include "arm_add_q7.c"
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#include "arm_dot_prod_f32.c"
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#include "arm_dot_prod_q15.c"
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#include "arm_dot_prod_q31.c"
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#include "arm_dot_prod_q7.c"
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#include "arm_mult_f32.c"
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#include "arm_mult_q15.c"
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#include "arm_mult_q31.c"
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#include "arm_mult_q7.c"
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#include "arm_negate_f32.c"
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#include "arm_negate_q15.c"
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#include "arm_negate_q31.c"
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#include "arm_negate_q7.c"
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#include "arm_offset_f32.c"
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#include "arm_offset_q15.c"
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#include "arm_offset_q31.c"
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#include "arm_offset_q7.c"
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#include "arm_scale_f32.c"
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#include "arm_scale_q15.c"
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#include "arm_scale_q31.c"
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#include "arm_scale_q7.c"
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#include "arm_shift_q15.c"
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#include "arm_shift_q31.c"
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#include "arm_shift_q7.c"
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#include "arm_sub_f32.c"
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#include "arm_sub_q15.c"
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#include "arm_sub_q31.c"
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#include "arm_sub_q7.c"
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@ -0,0 +1,16 @@
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cmake_minimum_required (VERSION 3.6)
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project(CMSISDSPBasicMath)
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file(GLOB SRC "./*_*.c")
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add_library(CMSISDSPBasicMath STATIC ${SRC})
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configdsp(CMSISDSPBasicMath ..)
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### Includes
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target_include_directories(CMSISDSPBasicMath PUBLIC "${DSP}/../../Include")
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@ -0,0 +1,146 @@
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/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_abs_f32.c
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* Description: Floating-point vector absolute value
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*
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* $Date: 18. March 2019
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* $Revision: V1.6.0
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*
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* Target Processor: Cortex-M cores
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* -------------------------------------------------------------------- */
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/*
|
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* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
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* SPDX-License-Identifier: Apache-2.0
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*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
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*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
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#include "arm_math.h"
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#include <math.h>
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/**
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@ingroup groupMath
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*/
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/**
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@defgroup BasicAbs Vector Absolute Value
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Computes the absolute value of a vector on an element-by-element basis.
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<pre>
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pDst[n] = abs(pSrc[n]), 0 <= n < blockSize.
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</pre>
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The functions support in-place computation allowing the source and
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destination pointers to reference the same memory buffer.
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There are separate functions for floating-point, Q7, Q15, and Q31 data types.
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*/
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/**
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@addtogroup BasicAbs
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@{
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*/
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/**
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@brief Floating-point vector absolute value.
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@param[in] pSrc points to the input vector
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@param[out] pDst points to the output vector
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@param[in] blockSize number of samples in each vector
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@return none
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*/
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void arm_abs_f32(
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const float32_t * pSrc,
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float32_t * pDst,
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uint32_t blockSize)
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{
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uint32_t blkCnt; /* Loop counter */
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#if defined(ARM_MATH_NEON)
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float32x4_t vec1;
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float32x4_t res;
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/* Compute 4 outputs at a time */
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blkCnt = blockSize >> 2U;
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while (blkCnt > 0U)
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{
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/* C = |A| */
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/* Calculate absolute values and then store the results in the destination buffer. */
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vec1 = vld1q_f32(pSrc);
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res = vabsq_f32(vec1);
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vst1q_f32(pDst, res);
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/* Increment pointers */
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pSrc += 4;
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pDst += 4;
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/* Decrement the loop counter */
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blkCnt--;
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}
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/* Tail */
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blkCnt = blockSize & 0x3;
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#else
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#if defined (ARM_MATH_LOOPUNROLL)
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/* Loop unrolling: Compute 4 outputs at a time */
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blkCnt = blockSize >> 2U;
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while (blkCnt > 0U)
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{
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/* C = |A| */
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/* Calculate absolute and store result in destination buffer. */
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*pDst++ = fabsf(*pSrc++);
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*pDst++ = fabsf(*pSrc++);
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*pDst++ = fabsf(*pSrc++);
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*pDst++ = fabsf(*pSrc++);
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/* Decrement loop counter */
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blkCnt--;
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}
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/* Loop unrolling: Compute remaining outputs */
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blkCnt = blockSize % 0x4U;
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#else
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/* Initialize blkCnt with number of samples */
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blkCnt = blockSize;
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#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
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#endif /* #if defined(ARM_MATH_NEON) */
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while (blkCnt > 0U)
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{
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/* C = |A| */
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/* Calculate absolute and store result in destination buffer. */
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*pDst++ = fabsf(*pSrc++);
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/* Decrement loop counter */
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blkCnt--;
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}
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}
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/**
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@} end of BasicAbs group
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*/
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@ -0,0 +1,132 @@
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/* ----------------------------------------------------------------------
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* Project: CMSIS DSP Library
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* Title: arm_abs_q15.c
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* Description: Q15 vector absolute value
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||||
*
|
||||
* $Date: 18. March 2019
|
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* $Revision: V1.6.0
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||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
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|
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#include "arm_math.h"
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/**
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@ingroup groupMath
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*/
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/**
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@addtogroup BasicAbs
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@{
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*/
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/**
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@brief Q15 vector absolute value.
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@param[in] pSrc points to the input vector
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@param[out] pDst points to the output vector
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@param[in] blockSize number of samples in each vector
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@return none
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|
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@par Scaling and Overflow Behavior
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The function uses saturating arithmetic.
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The Q15 value -1 (0x8000) will be saturated to the maximum allowable positive value 0x7FFF.
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*/
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void arm_abs_q15(
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const q15_t * pSrc,
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q15_t * pDst,
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uint32_t blockSize)
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{
|
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uint32_t blkCnt; /* Loop counter */
|
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q15_t in; /* Temporary input variable */
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|
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#if defined (ARM_MATH_LOOPUNROLL)
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|
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/* Loop unrolling: Compute 4 outputs at a time */
|
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blkCnt = blockSize >> 2U;
|
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|
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while (blkCnt > 0U)
|
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{
|
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/* C = |A| */
|
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|
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/* Calculate absolute of input (if -1 then saturated to 0x7fff) and store result in destination buffer. */
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in = *pSrc++;
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#if defined (ARM_MATH_DSP)
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*pDst++ = (in > 0) ? in : (q15_t)__QSUB16(0, in);
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#else
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*pDst++ = (in > 0) ? in : ((in == (q15_t) 0x8000) ? 0x7fff : -in);
|
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#endif
|
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|
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in = *pSrc++;
|
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#if defined (ARM_MATH_DSP)
|
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*pDst++ = (in > 0) ? in : (q15_t)__QSUB16(0, in);
|
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#else
|
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*pDst++ = (in > 0) ? in : ((in == (q15_t) 0x8000) ? 0x7fff : -in);
|
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#endif
|
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|
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in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
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*pDst++ = (in > 0) ? in : (q15_t)__QSUB16(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == (q15_t) 0x8000) ? 0x7fff : -in);
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q15_t)__QSUB16(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == (q15_t) 0x8000) ? 0x7fff : -in);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = |A| */
|
||||
|
||||
/* Calculate absolute of input (if -1 then saturated to 0x7fff) and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q15_t)__QSUB16(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == (q15_t) 0x8000) ? 0x7fff : -in);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicAbs group
|
||||
*/
|
||||
@ -0,0 +1,132 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_abs_q31.c
|
||||
* Description: Q31 vector absolute value
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicAbs
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q31 vector absolute value.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
The Q31 value -1 (0x80000000) will be saturated to the maximum allowable positive value 0x7FFFFFFF.
|
||||
*/
|
||||
|
||||
void arm_abs_q31(
|
||||
const q31_t * pSrc,
|
||||
q31_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q31_t in; /* Temporary variable */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = |A| */
|
||||
|
||||
/* Calculate absolute of input (if -1 then saturated to 0x7fffffff) and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = |A| */
|
||||
|
||||
/* Calculate absolute of input (if -1 then saturated to 0x7fffffff) and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q31_t)__QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == INT32_MIN) ? INT32_MAX : -in);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicAbs group
|
||||
*/
|
||||
@ -0,0 +1,134 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_abs_q7.c
|
||||
* Description: Q7 vector absolute value
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicAbs
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q7 vector absolute value.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Conditions for optimum performance
|
||||
Input and output buffers should be aligned by 32-bit
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
The Q7 value -1 (0x80) will be saturated to the maximum allowable positive value 0x7F.
|
||||
*/
|
||||
|
||||
void arm_abs_q7(
|
||||
const q7_t * pSrc,
|
||||
q7_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q7_t in; /* Temporary input variable */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = |A| */
|
||||
|
||||
/* Calculate absolute of input (if -1 then saturated to 0x7f) and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q7_t)__QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == (q7_t) 0x80) ? (q7_t) 0x7f : -in);
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q7_t)__QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == (q7_t) 0x80) ? (q7_t) 0x7f : -in);
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q7_t)__QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == (q7_t) 0x80) ? (q7_t) 0x7f : -in);
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q7_t)__QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == (q7_t) 0x80) ? (q7_t) 0x7f : -in);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = |A| */
|
||||
|
||||
/* Calculate absolute of input (if -1 then saturated to 0x7f) and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (in > 0) ? in : (q7_t) __QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in > 0) ? in : ((in == (q7_t) 0x80) ? (q7_t) 0x7f : -in);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicAbs group
|
||||
*/
|
||||
@ -0,0 +1,145 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_add_f32.c
|
||||
* Description: Floating-point vector addition
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@defgroup BasicAdd Vector Addition
|
||||
|
||||
Element-by-element addition of two vectors.
|
||||
|
||||
<pre>
|
||||
pDst[n] = pSrcA[n] + pSrcB[n], 0 <= n < blockSize.
|
||||
</pre>
|
||||
|
||||
There are separate functions for floating-point, Q7, Q15, and Q31 data types.
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicAdd
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Floating-point vector addition.
|
||||
@param[in] pSrcA points to first input vector
|
||||
@param[in] pSrcB points to second input vector
|
||||
@param[out] pDst points to output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
*/
|
||||
|
||||
void arm_add_f32(
|
||||
const float32_t * pSrcA,
|
||||
const float32_t * pSrcB,
|
||||
float32_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined(ARM_MATH_NEON)
|
||||
float32x4_t vec1;
|
||||
float32x4_t vec2;
|
||||
float32x4_t res;
|
||||
|
||||
/* Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + B */
|
||||
|
||||
/* Add and then store the results in the destination buffer. */
|
||||
vec1 = vld1q_f32(pSrcA);
|
||||
vec2 = vld1q_f32(pSrcB);
|
||||
res = vaddq_f32(vec1, vec2);
|
||||
vst1q_f32(pDst, res);
|
||||
|
||||
/* Increment pointers */
|
||||
pSrcA += 4;
|
||||
pSrcB += 4;
|
||||
pDst += 4;
|
||||
|
||||
/* Decrement the loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Tail */
|
||||
blkCnt = blockSize & 0x3;
|
||||
|
||||
#else
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + B */
|
||||
|
||||
/* Add and store result in destination buffer. */
|
||||
*pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
*pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
*pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
*pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
#endif /* #if defined(ARM_MATH_NEON) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + B */
|
||||
|
||||
/* Add and store result in destination buffer. */
|
||||
*pDst++ = (*pSrcA++) + (*pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicAdd group
|
||||
*/
|
||||
@ -0,0 +1,126 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_add_q15.c
|
||||
* Description: Q15 vector addition
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicAdd
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q15 vector addition.
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_add_q15(
|
||||
const q15_t * pSrcA,
|
||||
const q15_t * pSrcB,
|
||||
q15_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q31_t inA1, inA2;
|
||||
q31_t inB1, inB2;
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + B */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* read 2 times 2 samples at a time from sourceA */
|
||||
inA1 = read_q15x2_ia ((q15_t **) &pSrcA);
|
||||
inA2 = read_q15x2_ia ((q15_t **) &pSrcA);
|
||||
/* read 2 times 2 samples at a time from sourceB */
|
||||
inB1 = read_q15x2_ia ((q15_t **) &pSrcB);
|
||||
inB2 = read_q15x2_ia ((q15_t **) &pSrcB);
|
||||
|
||||
/* Add and store 2 times 2 samples at a time */
|
||||
write_q15x2_ia (&pDst, __QADD16(inA1, inB1));
|
||||
write_q15x2_ia (&pDst, __QADD16(inA2, inB2));
|
||||
#else
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ + *pSrcB++), 16);
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ + *pSrcB++), 16);
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ + *pSrcB++), 16);
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ + *pSrcB++), 16);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + B */
|
||||
|
||||
/* Add and store result in destination buffer. */
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (q15_t) __QADD16(*pSrcA++, *pSrcB++);
|
||||
#else
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ + *pSrcB++), 16);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicAdd group
|
||||
*/
|
||||
@ -0,0 +1,108 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_add_q31.c
|
||||
* Description: Q31 vector addition
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicAdd
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q31 vector addition.
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q31 range [0x80000000 0x7FFFFFFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_add_q31(
|
||||
const q31_t * pSrcA,
|
||||
const q31_t * pSrcB,
|
||||
q31_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + B */
|
||||
|
||||
/* Add and store result in destination buffer. */
|
||||
*pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
|
||||
*pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
|
||||
*pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
|
||||
*pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + B */
|
||||
|
||||
/* Add and store result in destination buffer. */
|
||||
*pDst++ = __QADD(*pSrcA++, *pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicAdd group
|
||||
*/
|
||||
@ -0,0 +1,109 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_add_q7.c
|
||||
* Description: Q7 vector addition
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicAdd
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q7 vector addition.
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q7 range [0x80 0x7F] are saturated.
|
||||
*/
|
||||
|
||||
void arm_add_q7(
|
||||
const q7_t * pSrcA,
|
||||
const q7_t * pSrcB,
|
||||
q7_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + B */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Add and store result in destination buffer (4 samples at a time). */
|
||||
write_q7x4_ia (&pDst, __QADD8 (read_q7x4_ia ((q7_t **) &pSrcA), read_q7x4_ia ((q7_t **) &pSrcB)));
|
||||
#else
|
||||
*pDst++ = (q7_t) __SSAT ((q15_t) *pSrcA++ + *pSrcB++, 8);
|
||||
*pDst++ = (q7_t) __SSAT ((q15_t) *pSrcA++ + *pSrcB++, 8);
|
||||
*pDst++ = (q7_t) __SSAT ((q15_t) *pSrcA++ + *pSrcB++, 8);
|
||||
*pDst++ = (q7_t) __SSAT ((q15_t) *pSrcA++ + *pSrcB++, 8);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + B */
|
||||
|
||||
/* Add and store result in destination buffer. */
|
||||
*pDst++ = (q7_t) __SSAT((q15_t) *pSrcA++ + *pSrcB++, 8);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicAdd group
|
||||
*/
|
||||
@ -0,0 +1,163 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_dot_prod_f32.c
|
||||
* Description: Floating-point dot product
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@defgroup BasicDotProd Vector Dot Product
|
||||
|
||||
Computes the dot product of two vectors.
|
||||
The vectors are multiplied element-by-element and then summed.
|
||||
|
||||
<pre>
|
||||
sum = pSrcA[0]*pSrcB[0] + pSrcA[1]*pSrcB[1] + ... + pSrcA[blockSize-1]*pSrcB[blockSize-1]
|
||||
</pre>
|
||||
|
||||
There are separate functions for floating-point, Q7, Q15, and Q31 data types.
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicDotProd
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Dot product of floating-point vectors.
|
||||
@param[in] pSrcA points to the first input vector.
|
||||
@param[in] pSrcB points to the second input vector.
|
||||
@param[in] blockSize number of samples in each vector.
|
||||
@param[out] result output result returned here.
|
||||
@return none
|
||||
*/
|
||||
|
||||
void arm_dot_prod_f32(
|
||||
const float32_t * pSrcA,
|
||||
const float32_t * pSrcB,
|
||||
uint32_t blockSize,
|
||||
float32_t * result)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
float32_t sum = 0.0f; /* Temporary return variable */
|
||||
|
||||
#if defined(ARM_MATH_NEON)
|
||||
float32x4_t vec1;
|
||||
float32x4_t vec2;
|
||||
float32x4_t res;
|
||||
float32x4_t accum = vdupq_n_f32(0);
|
||||
|
||||
/* Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
vec1 = vld1q_f32(pSrcA);
|
||||
vec2 = vld1q_f32(pSrcB);
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A[0]*B[0] + A[1]*B[1] + A[2]*B[2] + ... + A[blockSize-1]*B[blockSize-1] */
|
||||
/* Calculate dot product and then store the result in a temporary buffer. */
|
||||
|
||||
accum = vmlaq_f32(accum, vec1, vec2);
|
||||
|
||||
/* Increment pointers */
|
||||
pSrcA += 4;
|
||||
pSrcB += 4;
|
||||
|
||||
vec1 = vld1q_f32(pSrcA);
|
||||
vec2 = vld1q_f32(pSrcB);
|
||||
|
||||
/* Decrement the loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
#if __aarch64__
|
||||
sum = vpadds_f32(vpadd_f32(vget_low_f32(accum), vget_high_f32(accum)));
|
||||
#else
|
||||
sum = (vpadd_f32(vget_low_f32(accum), vget_high_f32(accum)))[0] + (vpadd_f32(vget_low_f32(accum), vget_high_f32(accum)))[1];
|
||||
#endif
|
||||
|
||||
/* Tail */
|
||||
blkCnt = blockSize & 0x3;
|
||||
|
||||
#else
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
/* First part of the processing with loop unrolling. Compute 4 outputs at a time.
|
||||
** a second loop below computes the remaining 1 to 3 samples. */
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A[0]* B[0] + A[1]* B[1] + A[2]* B[2] + .....+ A[blockSize-1]* B[blockSize-1] */
|
||||
|
||||
/* Calculate dot product and store result in a temporary buffer. */
|
||||
sum += (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
sum += (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
sum += (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
sum += (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
#endif /* #if defined(ARM_MATH_NEON) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A[0]* B[0] + A[1]* B[1] + A[2]* B[2] + .....+ A[blockSize-1]* B[blockSize-1] */
|
||||
|
||||
/* Calculate dot product and store result in a temporary buffer. */
|
||||
sum += (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Store result in destination buffer */
|
||||
*result = sum;
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicDotProd group
|
||||
*/
|
||||
@ -0,0 +1,120 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_dot_prod_q15.c
|
||||
* Description: Q15 dot product
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicDotProd
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Dot product of Q15 vectors.
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@param[out] result output result returned here
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The intermediate multiplications are in 1.15 x 1.15 = 2.30 format and these
|
||||
results are added to a 64-bit accumulator in 34.30 format.
|
||||
Nonsaturating additions are used and given that there are 33 guard bits in the accumulator
|
||||
there is no risk of overflow.
|
||||
The return result is in 34.30 format.
|
||||
*/
|
||||
|
||||
void arm_dot_prod_q15(
|
||||
const q15_t * pSrcA,
|
||||
const q15_t * pSrcB,
|
||||
uint32_t blockSize,
|
||||
q63_t * result)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q63_t sum = 0; /* Temporary return variable */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A[0]* B[0] + A[1]* B[1] + A[2]* B[2] + .....+ A[blockSize-1]* B[blockSize-1] */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Calculate dot product and store result in a temporary buffer. */
|
||||
sum = __SMLALD(read_q15x2_ia ((q15_t **) &pSrcA), read_q15x2_ia ((q15_t **) &pSrcB), sum);
|
||||
sum = __SMLALD(read_q15x2_ia ((q15_t **) &pSrcA), read_q15x2_ia ((q15_t **) &pSrcB), sum);
|
||||
#else
|
||||
sum += (q63_t)((q31_t) *pSrcA++ * *pSrcB++);
|
||||
sum += (q63_t)((q31_t) *pSrcA++ * *pSrcB++);
|
||||
sum += (q63_t)((q31_t) *pSrcA++ * *pSrcB++);
|
||||
sum += (q63_t)((q31_t) *pSrcA++ * *pSrcB++);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A[0]* B[0] + A[1]* B[1] + A[2]* B[2] + .....+ A[blockSize-1]* B[blockSize-1] */
|
||||
|
||||
/* Calculate dot product and store result in a temporary buffer. */
|
||||
//#if defined (ARM_MATH_DSP)
|
||||
// sum = __SMLALD(*pSrcA++, *pSrcB++, sum);
|
||||
//#else
|
||||
sum += (q63_t)((q31_t) *pSrcA++ * *pSrcB++);
|
||||
//#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Store result in destination buffer in 34.30 format */
|
||||
*result = sum;
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicDotProd group
|
||||
*/
|
||||
@ -0,0 +1,115 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_dot_prod_q31.c
|
||||
* Description: Q31 dot product
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicDotProd
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Dot product of Q31 vectors.
|
||||
@param[in] pSrcA points to the first input vector.
|
||||
@param[in] pSrcB points to the second input vector.
|
||||
@param[in] blockSize number of samples in each vector.
|
||||
@param[out] result output result returned here.
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The intermediate multiplications are in 1.31 x 1.31 = 2.62 format and these
|
||||
are truncated to 2.48 format by discarding the lower 14 bits.
|
||||
The 2.48 result is then added without saturation to a 64-bit accumulator in 16.48 format.
|
||||
There are 15 guard bits in the accumulator and there is no risk of overflow as long as
|
||||
the length of the vectors is less than 2^16 elements.
|
||||
The return result is in 16.48 format.
|
||||
*/
|
||||
|
||||
void arm_dot_prod_q31(
|
||||
const q31_t * pSrcA,
|
||||
const q31_t * pSrcB,
|
||||
uint32_t blockSize,
|
||||
q63_t * result)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q63_t sum = 0; /* Temporary return variable */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A[0]* B[0] + A[1]* B[1] + A[2]* B[2] + .....+ A[blockSize-1]* B[blockSize-1] */
|
||||
|
||||
/* Calculate dot product and store result in a temporary buffer. */
|
||||
sum += ((q63_t) *pSrcA++ * *pSrcB++) >> 14U;
|
||||
|
||||
sum += ((q63_t) *pSrcA++ * *pSrcB++) >> 14U;
|
||||
|
||||
sum += ((q63_t) *pSrcA++ * *pSrcB++) >> 14U;
|
||||
|
||||
sum += ((q63_t) *pSrcA++ * *pSrcB++) >> 14U;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A[0]* B[0] + A[1]* B[1] + A[2]* B[2] + .....+ A[blockSize-1]* B[blockSize-1] */
|
||||
|
||||
/* Calculate dot product and store result in a temporary buffer. */
|
||||
sum += ((q63_t) *pSrcA++ * *pSrcB++) >> 14U;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Store result in destination buffer in 16.48 format */
|
||||
*result = sum;
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicDotProd group
|
||||
*/
|
||||
@ -0,0 +1,139 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_dot_prod_q7.c
|
||||
* Description: Q7 dot product
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicDotProd
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Dot product of Q7 vectors.
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@param[out] result output result returned here
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The intermediate multiplications are in 1.7 x 1.7 = 2.14 format and these
|
||||
results are added to an accumulator in 18.14 format.
|
||||
Nonsaturating additions are used and there is no danger of wrap around as long as
|
||||
the vectors are less than 2^18 elements long.
|
||||
The return result is in 18.14 format.
|
||||
*/
|
||||
|
||||
void arm_dot_prod_q7(
|
||||
const q7_t * pSrcA,
|
||||
const q7_t * pSrcB,
|
||||
uint32_t blockSize,
|
||||
q31_t * result)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q31_t sum = 0; /* Temporary return variable */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q31_t input1, input2; /* Temporary variables */
|
||||
q31_t inA1, inA2, inB1, inB2; /* Temporary variables */
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A[0]* B[0] + A[1]* B[1] + A[2]* B[2] + .....+ A[blockSize-1]* B[blockSize-1] */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* read 4 samples at a time from sourceA */
|
||||
input1 = read_q7x4_ia ((q7_t **) &pSrcA);
|
||||
/* read 4 samples at a time from sourceB */
|
||||
input2 = read_q7x4_ia ((q7_t **) &pSrcB);
|
||||
|
||||
/* extract two q7_t samples to q15_t samples */
|
||||
inA1 = __SXTB16(__ROR(input1, 8));
|
||||
/* extract reminaing two samples */
|
||||
inA2 = __SXTB16(input1);
|
||||
/* extract two q7_t samples to q15_t samples */
|
||||
inB1 = __SXTB16(__ROR(input2, 8));
|
||||
/* extract reminaing two samples */
|
||||
inB2 = __SXTB16(input2);
|
||||
|
||||
/* multiply and accumulate two samples at a time */
|
||||
sum = __SMLAD(inA1, inB1, sum);
|
||||
sum = __SMLAD(inA2, inB2, sum);
|
||||
#else
|
||||
sum += (q31_t) ((q15_t) *pSrcA++ * *pSrcB++);
|
||||
sum += (q31_t) ((q15_t) *pSrcA++ * *pSrcB++);
|
||||
sum += (q31_t) ((q15_t) *pSrcA++ * *pSrcB++);
|
||||
sum += (q31_t) ((q15_t) *pSrcA++ * *pSrcB++);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A[0]* B[0] + A[1]* B[1] + A[2]* B[2] + .....+ A[blockSize-1]* B[blockSize-1] */
|
||||
|
||||
/* Calculate dot product and store result in a temporary buffer. */
|
||||
//#if defined (ARM_MATH_DSP)
|
||||
// sum = __SMLAD(*pSrcA++, *pSrcB++, sum);
|
||||
//#else
|
||||
sum += (q31_t) ((q15_t) *pSrcA++ * *pSrcB++);
|
||||
//#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Store result in destination buffer in 18.14 format */
|
||||
*result = sum;
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicDotProd group
|
||||
*/
|
||||
@ -0,0 +1,148 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_mult_f32.c
|
||||
* Description: Floating-point vector multiplication
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@defgroup BasicMult Vector Multiplication
|
||||
|
||||
Element-by-element multiplication of two vectors.
|
||||
|
||||
<pre>
|
||||
pDst[n] = pSrcA[n] * pSrcB[n], 0 <= n < blockSize.
|
||||
</pre>
|
||||
|
||||
There are separate functions for floating-point, Q7, Q15, and Q31 data types.
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicMult
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Floating-point vector multiplication.
|
||||
@param[in] pSrcA points to the first input vector.
|
||||
@param[in] pSrcB points to the second input vector.
|
||||
@param[out] pDst points to the output vector.
|
||||
@param[in] blockSize number of samples in each vector.
|
||||
@return none
|
||||
*/
|
||||
|
||||
void arm_mult_f32(
|
||||
const float32_t * pSrcA,
|
||||
const float32_t * pSrcB,
|
||||
float32_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined(ARM_MATH_NEON)
|
||||
float32x4_t vec1;
|
||||
float32x4_t vec2;
|
||||
float32x4_t res;
|
||||
|
||||
/* Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * B */
|
||||
|
||||
/* Multiply the inputs and then store the results in the destination buffer. */
|
||||
vec1 = vld1q_f32(pSrcA);
|
||||
vec2 = vld1q_f32(pSrcB);
|
||||
res = vmulq_f32(vec1, vec2);
|
||||
vst1q_f32(pDst, res);
|
||||
|
||||
/* Increment pointers */
|
||||
pSrcA += 4;
|
||||
pSrcB += 4;
|
||||
pDst += 4;
|
||||
|
||||
/* Decrement the loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Tail */
|
||||
blkCnt = blockSize & 0x3;
|
||||
|
||||
#else
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * B */
|
||||
|
||||
/* Multiply inputs and store result in destination buffer. */
|
||||
*pDst++ = (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
*pDst++ = (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
*pDst++ = (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
*pDst++ = (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
#endif /* #if defined(ARM_MATH_NEON) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * B */
|
||||
|
||||
/* Multiply input and store result in destination buffer. */
|
||||
*pDst++ = (*pSrcA++) * (*pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicMult group
|
||||
*/
|
||||
@ -0,0 +1,143 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_mult_q15.c
|
||||
* Description: Q15 vector multiplication
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicMult
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q15 vector multiplication
|
||||
@param[in] pSrcA points to first input vector
|
||||
@param[in] pSrcB points to second input vector
|
||||
@param[out] pDst points to output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_mult_q15(
|
||||
const q15_t * pSrcA,
|
||||
const q15_t * pSrcB,
|
||||
q15_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q31_t inA1, inA2, inB1, inB2; /* Temporary input variables */
|
||||
q15_t out1, out2, out3, out4; /* Temporary output variables */
|
||||
q31_t mul1, mul2, mul3, mul4; /* Temporary variables */
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * B */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* read 2 samples at a time from sourceA */
|
||||
inA1 = read_q15x2_ia ((q15_t **) &pSrcA);
|
||||
/* read 2 samples at a time from sourceB */
|
||||
inB1 = read_q15x2_ia ((q15_t **) &pSrcB);
|
||||
/* read 2 samples at a time from sourceA */
|
||||
inA2 = read_q15x2_ia ((q15_t **) &pSrcA);
|
||||
/* read 2 samples at a time from sourceB */
|
||||
inB2 = read_q15x2_ia ((q15_t **) &pSrcB);
|
||||
|
||||
/* multiply mul = sourceA * sourceB */
|
||||
mul1 = (q31_t) ((q15_t) (inA1 >> 16) * (q15_t) (inB1 >> 16));
|
||||
mul2 = (q31_t) ((q15_t) (inA1 ) * (q15_t) (inB1 ));
|
||||
mul3 = (q31_t) ((q15_t) (inA2 >> 16) * (q15_t) (inB2 >> 16));
|
||||
mul4 = (q31_t) ((q15_t) (inA2 ) * (q15_t) (inB2 ));
|
||||
|
||||
/* saturate result to 16 bit */
|
||||
out1 = (q15_t) __SSAT(mul1 >> 15, 16);
|
||||
out2 = (q15_t) __SSAT(mul2 >> 15, 16);
|
||||
out3 = (q15_t) __SSAT(mul3 >> 15, 16);
|
||||
out4 = (q15_t) __SSAT(mul4 >> 15, 16);
|
||||
|
||||
/* store result to destination */
|
||||
#ifndef ARM_MATH_BIG_ENDIAN
|
||||
write_q15x2_ia (&pDst, __PKHBT(out2, out1, 16));
|
||||
write_q15x2_ia (&pDst, __PKHBT(out4, out3, 16));
|
||||
#else
|
||||
write_q15x2_ia (&pDst, __PKHBT(out1, out2, 16));
|
||||
write_q15x2_ia (&pDst, __PKHBT(out3, out4, 16));
|
||||
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
|
||||
|
||||
#else
|
||||
*pDst++ = (q15_t) __SSAT((((q31_t) (*pSrcA++) * (*pSrcB++)) >> 15), 16);
|
||||
*pDst++ = (q15_t) __SSAT((((q31_t) (*pSrcA++) * (*pSrcB++)) >> 15), 16);
|
||||
*pDst++ = (q15_t) __SSAT((((q31_t) (*pSrcA++) * (*pSrcB++)) >> 15), 16);
|
||||
*pDst++ = (q15_t) __SSAT((((q31_t) (*pSrcA++) * (*pSrcB++)) >> 15), 16);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * B */
|
||||
|
||||
/* Multiply inputs and store result in destination buffer. */
|
||||
*pDst++ = (q15_t) __SSAT((((q31_t) (*pSrcA++) * (*pSrcB++)) >> 15), 16);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicMult group
|
||||
*/
|
||||
@ -0,0 +1,119 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_mult_q31.c
|
||||
* Description: Q31 vector multiplication
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicMult
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q31 vector multiplication.
|
||||
@param[in] pSrcA points to the first input vector.
|
||||
@param[in] pSrcB points to the second input vector.
|
||||
@param[out] pDst points to the output vector.
|
||||
@param[in] blockSize number of samples in each vector.
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_mult_q31(
|
||||
const q31_t * pSrcA,
|
||||
const q31_t * pSrcB,
|
||||
q31_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q31_t out; /* Temporary output variable */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * B */
|
||||
|
||||
/* Multiply inputs and store result in destination buffer. */
|
||||
out = ((q63_t) *pSrcA++ * *pSrcB++) >> 32;
|
||||
out = __SSAT(out, 31);
|
||||
*pDst++ = out << 1U;
|
||||
|
||||
out = ((q63_t) *pSrcA++ * *pSrcB++) >> 32;
|
||||
out = __SSAT(out, 31);
|
||||
*pDst++ = out << 1U;
|
||||
|
||||
out = ((q63_t) *pSrcA++ * *pSrcB++) >> 32;
|
||||
out = __SSAT(out, 31);
|
||||
*pDst++ = out << 1U;
|
||||
|
||||
out = ((q63_t) *pSrcA++ * *pSrcB++) >> 32;
|
||||
out = __SSAT(out, 31);
|
||||
*pDst++ = out << 1U;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * B */
|
||||
|
||||
/* Multiply inputs and store result in destination buffer. */
|
||||
out = ((q63_t) *pSrcA++ * *pSrcB++) >> 32;
|
||||
out = __SSAT(out, 31);
|
||||
*pDst++ = out << 1U;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicMult group
|
||||
*/
|
||||
@ -0,0 +1,119 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_mult_q7.c
|
||||
* Description: Q7 vector multiplication
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicMult
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q7 vector multiplication
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q7 range [0x80 0x7F] are saturated.
|
||||
*/
|
||||
|
||||
void arm_mult_q7(
|
||||
const q7_t * pSrcA,
|
||||
const q7_t * pSrcB,
|
||||
q7_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q7_t out1, out2, out3, out4; /* Temporary output variables */
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * B */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Multiply inputs and store results in temporary variables */
|
||||
out1 = (q7_t) __SSAT((((q15_t) (*pSrcA++) * (*pSrcB++)) >> 7), 8);
|
||||
out2 = (q7_t) __SSAT((((q15_t) (*pSrcA++) * (*pSrcB++)) >> 7), 8);
|
||||
out3 = (q7_t) __SSAT((((q15_t) (*pSrcA++) * (*pSrcB++)) >> 7), 8);
|
||||
out4 = (q7_t) __SSAT((((q15_t) (*pSrcA++) * (*pSrcB++)) >> 7), 8);
|
||||
|
||||
/* Pack and store result in destination buffer (in single write) */
|
||||
write_q7x4_ia (&pDst, __PACKq7(out1, out2, out3, out4));
|
||||
#else
|
||||
*pDst++ = (q7_t) __SSAT((((q15_t) (*pSrcA++) * (*pSrcB++)) >> 7), 8);
|
||||
*pDst++ = (q7_t) __SSAT((((q15_t) (*pSrcA++) * (*pSrcB++)) >> 7), 8);
|
||||
*pDst++ = (q7_t) __SSAT((((q15_t) (*pSrcA++) * (*pSrcB++)) >> 7), 8);
|
||||
*pDst++ = (q7_t) __SSAT((((q15_t) (*pSrcA++) * (*pSrcB++)) >> 7), 8);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * B */
|
||||
|
||||
/* Multiply input and store result in destination buffer. */
|
||||
*pDst++ = (q7_t) __SSAT((((q15_t) (*pSrcA++) * (*pSrcB++)) >> 7), 8);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicMult group
|
||||
*/
|
||||
@ -0,0 +1,145 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_negate_f32.c
|
||||
* Description: Negates floating-point vectors
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@defgroup BasicNegate Vector Negate
|
||||
|
||||
Negates the elements of a vector.
|
||||
|
||||
<pre>
|
||||
pDst[n] = -pSrc[n], 0 <= n < blockSize.
|
||||
</pre>
|
||||
|
||||
The functions support in-place computation allowing the source and
|
||||
destination pointers to reference the same memory buffer.
|
||||
There are separate functions for floating-point, Q7, Q15, and Q31 data types.
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicNegate
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Negates the elements of a floating-point vector.
|
||||
@param[in] pSrc points to input vector.
|
||||
@param[out] pDst points to output vector.
|
||||
@param[in] blockSize number of samples in each vector.
|
||||
@return none
|
||||
*/
|
||||
|
||||
void arm_negate_f32(
|
||||
const float32_t * pSrc,
|
||||
float32_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined(ARM_MATH_NEON_EXPERIMENTAL)
|
||||
float32x4_t vec1;
|
||||
float32x4_t res;
|
||||
|
||||
/* Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = -A */
|
||||
|
||||
/* Negate and then store the results in the destination buffer. */
|
||||
vec1 = vld1q_f32(pSrc);
|
||||
res = vnegq_f32(vec1);
|
||||
vst1q_f32(pDst, res);
|
||||
|
||||
/* Increment pointers */
|
||||
pSrc += 4;
|
||||
pDst += 4;
|
||||
|
||||
/* Decrement the loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Tail */
|
||||
blkCnt = blockSize & 0x3;
|
||||
|
||||
#else
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = -A */
|
||||
|
||||
/* Negate and store result in destination buffer. */
|
||||
*pDst++ = -*pSrc++;
|
||||
|
||||
*pDst++ = -*pSrc++;
|
||||
|
||||
*pDst++ = -*pSrc++;
|
||||
|
||||
*pDst++ = -*pSrc++;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
#endif /* #if defined(ARM_MATH_NEON_EXPERIMENTAL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = -A */
|
||||
|
||||
/* Negate and store result in destination buffer. */
|
||||
*pDst++ = -*pSrc++;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicNegate group
|
||||
*/
|
||||
@ -0,0 +1,126 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_negate_q15.c
|
||||
* Description: Negates Q15 vectors
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicNegate
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Negates the elements of a Q15 vector.
|
||||
@param[in] pSrc points to the input vector.
|
||||
@param[out] pDst points to the output vector.
|
||||
@param[in] blockSize number of samples in each vector.
|
||||
@return none
|
||||
|
||||
@par Conditions for optimum performance
|
||||
Input and output buffers should be aligned by 32-bit
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
The Q15 value -1 (0x8000) is saturated to the maximum allowable positive value 0x7FFF.
|
||||
*/
|
||||
|
||||
void arm_negate_q15(
|
||||
const q15_t * pSrc,
|
||||
q15_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q15_t in; /* Temporary input variable */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q31_t in1; /* Temporary input variables */
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = -A */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Negate and store result in destination buffer (2 samples at a time). */
|
||||
in1 = read_q15x2_ia ((q15_t **) &pSrc);
|
||||
write_q15x2_ia (&pDst, __QSUB16(0, in1));
|
||||
|
||||
in1 = read_q15x2_ia ((q15_t **) &pSrc);
|
||||
write_q15x2_ia (&pDst, __QSUB16(0, in1));
|
||||
#else
|
||||
in = *pSrc++;
|
||||
*pDst++ = (in == (q15_t) 0x8000) ? (q15_t) 0x7fff : -in;
|
||||
|
||||
in = *pSrc++;
|
||||
*pDst++ = (in == (q15_t) 0x8000) ? (q15_t) 0x7fff : -in;
|
||||
|
||||
in = *pSrc++;
|
||||
*pDst++ = (in == (q15_t) 0x8000) ? (q15_t) 0x7fff : -in;
|
||||
|
||||
in = *pSrc++;
|
||||
*pDst++ = (in == (q15_t) 0x8000) ? (q15_t) 0x7fff : -in;
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = -A */
|
||||
|
||||
/* Negate and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
*pDst++ = (in == (q15_t) 0x8000) ? (q15_t) 0x7fff : -in;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicNegate group
|
||||
*/
|
||||
@ -0,0 +1,132 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_negate_q31.c
|
||||
* Description: Negates Q31 vectors
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicNegate
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Negates the elements of a Q31 vector.
|
||||
@param[in] pSrc points to the input vector.
|
||||
@param[out] pDst points to the output vector.
|
||||
@param[in] blockSize number of samples in each vector.
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
The Q31 value -1 (0x80000000) is saturated to the maximum allowable positive value 0x7FFFFFFF.
|
||||
*/
|
||||
|
||||
void arm_negate_q31(
|
||||
const q31_t * pSrc,
|
||||
q31_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q31_t in; /* Temporary input variable */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = -A */
|
||||
|
||||
/* Negate and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
|
||||
#endif
|
||||
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = -A */
|
||||
|
||||
/* Negate and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in == INT32_MIN) ? INT32_MAX : -in;
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicNegate group
|
||||
*/
|
||||
@ -0,0 +1,126 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_negate_q7.c
|
||||
* Description: Negates Q7 vectors
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicNegate
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Negates the elements of a Q7 vector.
|
||||
@param[in] pSrc points to the input vector.
|
||||
@param[out] pDst points to the output vector.
|
||||
@param[in] blockSize number of samples in each vector.
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
The Q7 value -1 (0x80) is saturated to the maximum allowable positive value 0x7F.
|
||||
*/
|
||||
|
||||
void arm_negate_q7(
|
||||
const q7_t * pSrc,
|
||||
q7_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q7_t in; /* Temporary input variable */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q31_t in1; /* Temporary input variable */
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = -A */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Negate and store result in destination buffer (4 samples at a time). */
|
||||
in1 = read_q7x4_ia ((q7_t **) &pSrc);
|
||||
write_q7x4_ia (&pDst, __QSUB8(0, in1));
|
||||
#else
|
||||
in = *pSrc++;
|
||||
*pDst++ = (in == (q7_t) 0x80) ? (q7_t) 0x7f : -in;
|
||||
|
||||
in = *pSrc++;
|
||||
*pDst++ = (in == (q7_t) 0x80) ? (q7_t) 0x7f : -in;
|
||||
|
||||
in = *pSrc++;
|
||||
*pDst++ = (in == (q7_t) 0x80) ? (q7_t) 0x7f : -in;
|
||||
|
||||
in = *pSrc++;
|
||||
*pDst++ = (in == (q7_t) 0x80) ? (q7_t) 0x7f : -in;
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = -A */
|
||||
|
||||
/* Negate and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (q7_t) __QSUB(0, in);
|
||||
#else
|
||||
*pDst++ = (in == (q7_t) 0x80) ? (q7_t) 0x7f : -in;
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicNegate group
|
||||
*/
|
||||
@ -0,0 +1,147 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_offset_f32.c
|
||||
* Description: Floating-point vector offset
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@defgroup BasicOffset Vector Offset
|
||||
|
||||
Adds a constant offset to each element of a vector.
|
||||
|
||||
<pre>
|
||||
pDst[n] = pSrc[n] + offset, 0 <= n < blockSize.
|
||||
</pre>
|
||||
|
||||
The functions support in-place computation allowing the source and
|
||||
destination pointers to reference the same memory buffer.
|
||||
There are separate functions for floating-point, Q7, Q15, and Q31 data types.
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicOffset
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Adds a constant offset to a floating-point vector.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] offset is the offset to be added
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
*/
|
||||
|
||||
void arm_offset_f32(
|
||||
const float32_t * pSrc,
|
||||
float32_t offset,
|
||||
float32_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined(ARM_MATH_NEON_EXPERIMENTAL)
|
||||
float32x4_t vec1;
|
||||
float32x4_t res;
|
||||
|
||||
/* Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + offset */
|
||||
|
||||
/* Add offset and then store the results in the destination buffer. */
|
||||
vec1 = vld1q_f32(pSrc);
|
||||
res = vaddq_f32(vec1,vdupq_n_f32(offset));
|
||||
vst1q_f32(pDst, res);
|
||||
|
||||
/* Increment pointers */
|
||||
pSrc += 4;
|
||||
pDst += 4;
|
||||
|
||||
/* Decrement the loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Tail */
|
||||
blkCnt = blockSize & 0x3;
|
||||
|
||||
#else
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + offset */
|
||||
|
||||
/* Add offset and store result in destination buffer. */
|
||||
*pDst++ = (*pSrc++) + offset;
|
||||
|
||||
*pDst++ = (*pSrc++) + offset;
|
||||
|
||||
*pDst++ = (*pSrc++) + offset;
|
||||
|
||||
*pDst++ = (*pSrc++) + offset;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
#endif /* #if defined(ARM_MATH_NEON_EXPERIMENTAL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + offset */
|
||||
|
||||
/* Add offset and store result in destination buffer. */
|
||||
*pDst++ = (*pSrc++) + offset;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicOffset group
|
||||
*/
|
||||
@ -0,0 +1,121 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_offset_q15.c
|
||||
* Description: Q15 vector offset
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicOffset
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Adds a constant offset to a Q15 vector.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] offset is the offset to be added
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_offset_q15(
|
||||
const q15_t * pSrc,
|
||||
q15_t offset,
|
||||
q15_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q31_t offset_packed; /* Offset packed to 32 bit */
|
||||
|
||||
/* Offset is packed to 32 bit in order to use SIMD32 for addition */
|
||||
offset_packed = __PKHBT(offset, offset, 16);
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + offset */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Add offset and store result in destination buffer (2 samples at a time). */
|
||||
write_q15x2_ia (&pDst, __QADD16(read_q15x2_ia ((q15_t **) &pSrc), offset_packed));
|
||||
write_q15x2_ia (&pDst, __QADD16(read_q15x2_ia ((q15_t **) &pSrc), offset_packed));
|
||||
#else
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrc++ + offset), 16);
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrc++ + offset), 16);
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrc++ + offset), 16);
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrc++ + offset), 16);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + offset */
|
||||
|
||||
/* Add offset and store result in destination buffer. */
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (q15_t) __QADD16(*pSrc++, offset);
|
||||
#else
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrc++ + offset), 16);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicOffset group
|
||||
*/
|
||||
@ -0,0 +1,128 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_offset_q31.c
|
||||
* Description: Q31 vector offset
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicOffset
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Adds a constant offset to a Q31 vector.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] offset is the offset to be added
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q31 range [0x80000000 0x7FFFFFFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_offset_q31(
|
||||
const q31_t * pSrc,
|
||||
q31_t offset,
|
||||
q31_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + offset */
|
||||
|
||||
/* Add offset and store result in destination buffer. */
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QADD(*pSrc++, offset);
|
||||
#else
|
||||
*pDst++ = (q31_t) clip_q63_to_q31((q63_t) * pSrc++ + offset);
|
||||
#endif
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QADD(*pSrc++, offset);
|
||||
#else
|
||||
*pDst++ = (q31_t) clip_q63_to_q31((q63_t) * pSrc++ + offset);
|
||||
#endif
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QADD(*pSrc++, offset);
|
||||
#else
|
||||
*pDst++ = (q31_t) clip_q63_to_q31((q63_t) * pSrc++ + offset);
|
||||
#endif
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QADD(*pSrc++, offset);
|
||||
#else
|
||||
*pDst++ = (q31_t) clip_q63_to_q31((q63_t) * pSrc++ + offset);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + offset */
|
||||
|
||||
/* Add offset and store result in destination buffer. */
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = __QADD(*pSrc++, offset);
|
||||
#else
|
||||
*pDst++ = (q31_t) clip_q63_to_q31((q63_t) * pSrc++ + offset);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicOffset group
|
||||
*/
|
||||
@ -0,0 +1,116 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_offset_q7.c
|
||||
* Description: Q7 vector offset
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicOffset
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Adds a constant offset to a Q7 vector.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] offset is the offset to be added
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q7 range [0x80 0x7F] are saturated.
|
||||
*/
|
||||
|
||||
void arm_offset_q7(
|
||||
const q7_t * pSrc,
|
||||
q7_t offset,
|
||||
q7_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q31_t offset_packed; /* Offset packed to 32 bit */
|
||||
|
||||
/* Offset is packed to 32 bit in order to use SIMD32 for addition */
|
||||
offset_packed = __PACKq7(offset, offset, offset, offset);
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + offset */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Add offset and store result in destination buffer (4 samples at a time). */
|
||||
write_q7x4_ia (&pDst, __QADD8(read_q7x4_ia ((q7_t **) &pSrc), offset_packed));
|
||||
#else
|
||||
*pDst++ = (q7_t) __SSAT(*pSrc++ + offset, 8);
|
||||
*pDst++ = (q7_t) __SSAT(*pSrc++ + offset, 8);
|
||||
*pDst++ = (q7_t) __SSAT(*pSrc++ + offset, 8);
|
||||
*pDst++ = (q7_t) __SSAT(*pSrc++ + offset, 8);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A + offset */
|
||||
|
||||
/* Add offset and store result in destination buffer. */
|
||||
*pDst++ = (q7_t) __SSAT((q15_t) *pSrc++ + offset, 8);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicOffset group
|
||||
*/
|
||||
@ -0,0 +1,159 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_scale_f32.c
|
||||
* Description: Multiplies a floating-point vector by a scalar
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@defgroup BasicScale Vector Scale
|
||||
|
||||
Multiply a vector by a scalar value. For floating-point data, the algorithm used is:
|
||||
|
||||
<pre>
|
||||
pDst[n] = pSrc[n] * scale, 0 <= n < blockSize.
|
||||
</pre>
|
||||
|
||||
In the fixed-point Q7, Q15, and Q31 functions, <code>scale</code> is represented by
|
||||
a fractional multiplication <code>scaleFract</code> and an arithmetic shift <code>shift</code>.
|
||||
The shift allows the gain of the scaling operation to exceed 1.0.
|
||||
The algorithm used with fixed-point data is:
|
||||
|
||||
<pre>
|
||||
pDst[n] = (pSrc[n] * scaleFract) << shift, 0 <= n < blockSize.
|
||||
</pre>
|
||||
|
||||
The overall scale factor applied to the fixed-point data is
|
||||
<pre>
|
||||
scale = scaleFract * 2^shift.
|
||||
</pre>
|
||||
|
||||
The functions support in-place computation allowing the source and destination
|
||||
pointers to reference the same memory buffer.
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicScale
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Multiplies a floating-point vector by a scalar.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] scale scale factor to be applied
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
*/
|
||||
|
||||
void arm_scale_f32(
|
||||
const float32_t *pSrc,
|
||||
float32_t scale,
|
||||
float32_t *pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
#if defined(ARM_MATH_NEON_EXPERIMENTAL)
|
||||
float32x4_t vec1;
|
||||
float32x4_t res;
|
||||
|
||||
/* Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
/* Scale the input and then store the results in the destination buffer. */
|
||||
vec1 = vld1q_f32(pSrc);
|
||||
res = vmulq_f32(vec1, vdupq_n_f32(scale));
|
||||
vst1q_f32(pDst, res);
|
||||
|
||||
/* Increment pointers */
|
||||
pSrc += 4;
|
||||
pDst += 4;
|
||||
|
||||
/* Decrement the loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Tail */
|
||||
blkCnt = blockSize & 0x3;
|
||||
|
||||
#else
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
/* Scale input and store result in destination buffer. */
|
||||
*pDst++ = (*pSrc++) * scale;
|
||||
|
||||
*pDst++ = (*pSrc++) * scale;
|
||||
|
||||
*pDst++ = (*pSrc++) * scale;
|
||||
|
||||
*pDst++ = (*pSrc++) * scale;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
#endif /* #if defined(ARM_MATH_NEON_EXPERIMENTAL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
/* Scale input and store result in destination buffer. */
|
||||
*pDst++ = (*pSrc++) * scale;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicScale group
|
||||
*/
|
||||
@ -0,0 +1,144 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_scale_q15.c
|
||||
* Description: Multiplies a Q15 vector by a scalar
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicScale
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Multiplies a Q15 vector by a scalar.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] scaleFract fractional portion of the scale value
|
||||
@param[in] shift number of bits to shift the result by
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The input data <code>*pSrc</code> and <code>scaleFract</code> are in 1.15 format.
|
||||
These are multiplied to yield a 2.30 intermediate result and this is shifted with saturation to 1.15 format.
|
||||
*/
|
||||
|
||||
void arm_scale_q15(
|
||||
const q15_t *pSrc,
|
||||
q15_t scaleFract,
|
||||
int8_t shift,
|
||||
q15_t *pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
int8_t kShift = 15 - shift; /* Shift to apply after scaling */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q31_t inA1, inA2;
|
||||
q31_t out1, out2, out3, out4; /* Temporary output variables */
|
||||
q15_t in1, in2, in3, in4; /* Temporary input variables */
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* read 2 times 2 samples at a time from source */
|
||||
inA1 = read_q15x2_ia ((q15_t **) &pSrc);
|
||||
inA2 = read_q15x2_ia ((q15_t **) &pSrc);
|
||||
|
||||
/* Scale inputs and store result in temporary variables
|
||||
* in single cycle by packing the outputs */
|
||||
out1 = (q31_t) ((q15_t) (inA1 >> 16) * scaleFract);
|
||||
out2 = (q31_t) ((q15_t) (inA1 ) * scaleFract);
|
||||
out3 = (q31_t) ((q15_t) (inA2 >> 16) * scaleFract);
|
||||
out4 = (q31_t) ((q15_t) (inA2 ) * scaleFract);
|
||||
|
||||
/* apply shifting */
|
||||
out1 = out1 >> kShift;
|
||||
out2 = out2 >> kShift;
|
||||
out3 = out3 >> kShift;
|
||||
out4 = out4 >> kShift;
|
||||
|
||||
/* saturate the output */
|
||||
in1 = (q15_t) (__SSAT(out1, 16));
|
||||
in2 = (q15_t) (__SSAT(out2, 16));
|
||||
in3 = (q15_t) (__SSAT(out3, 16));
|
||||
in4 = (q15_t) (__SSAT(out4, 16));
|
||||
|
||||
/* store result to destination */
|
||||
write_q15x2_ia (&pDst, __PKHBT(in2, in1, 16));
|
||||
write_q15x2_ia (&pDst, __PKHBT(in4, in3, 16));
|
||||
#else
|
||||
*pDst++ = (q15_t) (__SSAT(((q31_t) *pSrc++ * scaleFract) >> kShift, 16));
|
||||
*pDst++ = (q15_t) (__SSAT(((q31_t) *pSrc++ * scaleFract) >> kShift, 16));
|
||||
*pDst++ = (q15_t) (__SSAT(((q31_t) *pSrc++ * scaleFract) >> kShift, 16));
|
||||
*pDst++ = (q15_t) (__SSAT(((q31_t) *pSrc++ * scaleFract) >> kShift, 16));
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
/* Scale input and store result in destination buffer. */
|
||||
*pDst++ = (q15_t) (__SSAT(((q31_t) *pSrc++ * scaleFract) >> kShift, 16));
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicScale group
|
||||
*/
|
||||
@ -0,0 +1,191 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_scale_q31.c
|
||||
* Description: Multiplies a Q31 vector by a scalar
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicScale
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Multiplies a Q31 vector by a scalar.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] scaleFract fractional portion of the scale value
|
||||
@param[in] shift number of bits to shift the result by
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The input data <code>*pSrc</code> and <code>scaleFract</code> are in 1.31 format.
|
||||
These are multiplied to yield a 2.62 intermediate result and this is shifted with saturation to 1.31 format.
|
||||
*/
|
||||
|
||||
void arm_scale_q31(
|
||||
const q31_t *pSrc,
|
||||
q31_t scaleFract,
|
||||
int8_t shift,
|
||||
q31_t *pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
q31_t in, out; /* Temporary variables */
|
||||
int8_t kShift = shift + 1; /* Shift to apply after scaling */
|
||||
int8_t sign = (kShift & 0x80);
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
if (sign == 0U)
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
/* Scale input and store result in destination buffer. */
|
||||
in = *pSrc++; /* read input from source */
|
||||
in = ((q63_t) in * scaleFract) >> 32; /* multiply input with scaler value */
|
||||
out = in << kShift; /* apply shifting */
|
||||
if (in != (out >> kShift)) /* saturate the result */
|
||||
out = 0x7FFFFFFF ^ (in >> 31);
|
||||
*pDst++ = out; /* Store result destination */
|
||||
|
||||
in = *pSrc++;
|
||||
in = ((q63_t) in * scaleFract) >> 32;
|
||||
out = in << kShift;
|
||||
if (in != (out >> kShift))
|
||||
out = 0x7FFFFFFF ^ (in >> 31);
|
||||
*pDst++ = out;
|
||||
|
||||
in = *pSrc++;
|
||||
in = ((q63_t) in * scaleFract) >> 32;
|
||||
out = in << kShift;
|
||||
if (in != (out >> kShift))
|
||||
out = 0x7FFFFFFF ^ (in >> 31);
|
||||
*pDst++ = out;
|
||||
|
||||
in = *pSrc++;
|
||||
in = ((q63_t) in * scaleFract) >> 32;
|
||||
out = in << kShift;
|
||||
if (in != (out >> kShift))
|
||||
out = 0x7FFFFFFF ^ (in >> 31);
|
||||
*pDst++ = out;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
/* Scale input and store result in destination buffer. */
|
||||
in = *pSrc++; /* read four inputs from source */
|
||||
in = ((q63_t) in * scaleFract) >> 32; /* multiply input with scaler value */
|
||||
out = in >> -kShift; /* apply shifting */
|
||||
*pDst++ = out; /* Store result destination */
|
||||
|
||||
in = *pSrc++;
|
||||
in = ((q63_t) in * scaleFract) >> 32;
|
||||
out = in >> -kShift;
|
||||
*pDst++ = out;
|
||||
|
||||
in = *pSrc++;
|
||||
in = ((q63_t) in * scaleFract) >> 32;
|
||||
out = in >> -kShift;
|
||||
*pDst++ = out;
|
||||
|
||||
in = *pSrc++;
|
||||
in = ((q63_t) in * scaleFract) >> 32;
|
||||
out = in >> -kShift;
|
||||
*pDst++ = out;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
if (sign == 0U)
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
/* Scale input and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
in = ((q63_t) in * scaleFract) >> 32;
|
||||
out = in << kShift;
|
||||
if (in != (out >> kShift))
|
||||
out = 0x7FFFFFFF ^ (in >> 31);
|
||||
*pDst++ = out;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
/* Scale input and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
in = ((q63_t) in * scaleFract) >> 32;
|
||||
out = in >> -kShift;
|
||||
*pDst++ = out;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicScale group
|
||||
*/
|
||||
@ -0,0 +1,129 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_scale_q7.c
|
||||
* Description: Multiplies a Q7 vector by a scalar
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicScale
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Multiplies a Q7 vector by a scalar.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] scaleFract fractional portion of the scale value
|
||||
@param[in] shift number of bits to shift the result by
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The input data <code>*pSrc</code> and <code>scaleFract</code> are in 1.7 format.
|
||||
These are multiplied to yield a 2.14 intermediate result and this is shifted with saturation to 1.7 format.
|
||||
*/
|
||||
|
||||
void arm_scale_q7(
|
||||
const q7_t * pSrc,
|
||||
q7_t scaleFract,
|
||||
int8_t shift,
|
||||
q7_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
int8_t kShift = 7 - shift; /* Shift to apply after scaling */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q7_t in1, in2, in3, in4; /* Temporary input variables */
|
||||
q7_t out1, out2, out3, out4; /* Temporary output variables */
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Reading 4 inputs from memory */
|
||||
in1 = *pSrc++;
|
||||
in2 = *pSrc++;
|
||||
in3 = *pSrc++;
|
||||
in4 = *pSrc++;
|
||||
|
||||
/* Scale inputs and store result in the temporary variable. */
|
||||
out1 = (q7_t) (__SSAT(((in1) * scaleFract) >> kShift, 8));
|
||||
out2 = (q7_t) (__SSAT(((in2) * scaleFract) >> kShift, 8));
|
||||
out3 = (q7_t) (__SSAT(((in3) * scaleFract) >> kShift, 8));
|
||||
out4 = (q7_t) (__SSAT(((in4) * scaleFract) >> kShift, 8));
|
||||
|
||||
/* Pack and store result in destination buffer (in single write) */
|
||||
write_q7x4_ia (&pDst, __PACKq7(out1, out2, out3, out4));
|
||||
#else
|
||||
*pDst++ = (q7_t) (__SSAT((((q15_t) *pSrc++ * scaleFract) >> kShift), 8));
|
||||
*pDst++ = (q7_t) (__SSAT((((q15_t) *pSrc++ * scaleFract) >> kShift), 8));
|
||||
*pDst++ = (q7_t) (__SSAT((((q15_t) *pSrc++ * scaleFract) >> kShift), 8));
|
||||
*pDst++ = (q7_t) (__SSAT((((q15_t) *pSrc++ * scaleFract) >> kShift), 8));
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A * scale */
|
||||
|
||||
/* Scale input and store result in destination buffer. */
|
||||
*pDst++ = (q7_t) (__SSAT((((q15_t) *pSrc++ * scaleFract) >> kShift), 8));
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicScale group
|
||||
*/
|
||||
@ -0,0 +1,201 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_shift_q15.c
|
||||
* Description: Shifts the elements of a Q15 vector by a specified number of bits
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicShift
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Shifts the elements of a Q15 vector a specified number of bits
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right.
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_shift_q15(
|
||||
const q15_t * pSrc,
|
||||
int8_t shiftBits,
|
||||
q15_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
uint8_t sign = (shiftBits & 0x80); /* Sign of shiftBits */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q15_t in1, in2; /* Temporary input variables */
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
/* If the shift value is positive then do right shift else left shift */
|
||||
if (sign == 0U)
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A << shiftBits */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* read 2 samples from source */
|
||||
in1 = *pSrc++;
|
||||
in2 = *pSrc++;
|
||||
|
||||
/* Shift the inputs and then store the results in the destination buffer. */
|
||||
#ifndef ARM_MATH_BIG_ENDIAN
|
||||
write_q15x2_ia (&pDst, __PKHBT(__SSAT((in1 << shiftBits), 16),
|
||||
__SSAT((in2 << shiftBits), 16), 16));
|
||||
#else
|
||||
write_q15x2_ia (&pDst, __PKHBT(__SSAT((in2 << shiftBits), 16),
|
||||
__SSAT((in1 << shiftBits), 16), 16));
|
||||
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
|
||||
|
||||
/* read 2 samples from source */
|
||||
in1 = *pSrc++;
|
||||
in2 = *pSrc++;
|
||||
|
||||
#ifndef ARM_MATH_BIG_ENDIAN
|
||||
write_q15x2_ia (&pDst, __PKHBT(__SSAT((in1 << shiftBits), 16),
|
||||
__SSAT((in2 << shiftBits), 16), 16));
|
||||
#else
|
||||
write_q15x2_ia (&pDst, __PKHBT(__SSAT((in2 << shiftBits), 16),
|
||||
__SSAT((in1 << shiftBits), 16), 16));
|
||||
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
|
||||
|
||||
#else
|
||||
*pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16);
|
||||
*pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16);
|
||||
*pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16);
|
||||
*pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A >> shiftBits */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* read 2 samples from source */
|
||||
in1 = *pSrc++;
|
||||
in2 = *pSrc++;
|
||||
|
||||
/* Shift the inputs and then store the results in the destination buffer. */
|
||||
#ifndef ARM_MATH_BIG_ENDIAN
|
||||
write_q15x2_ia (&pDst, __PKHBT((in1 >> -shiftBits),
|
||||
(in2 >> -shiftBits), 16));
|
||||
#else
|
||||
write_q15x2_ia (&pDst, __PKHBT((in2 >> -shiftBits),
|
||||
(in1 >> -shiftBits), 16));
|
||||
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
|
||||
|
||||
/* read 2 samples from source */
|
||||
in1 = *pSrc++;
|
||||
in2 = *pSrc++;
|
||||
|
||||
#ifndef ARM_MATH_BIG_ENDIAN
|
||||
write_q15x2_ia (&pDst, __PKHBT((in1 >> -shiftBits),
|
||||
(in2 >> -shiftBits), 16));
|
||||
#else
|
||||
write_q15x2_ia (&pDst, __PKHBT((in2 >> -shiftBits),
|
||||
(in1 >> -shiftBits), 16));
|
||||
#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
|
||||
|
||||
#else
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
/* If the shift value is positive then do right shift else left shift */
|
||||
if (sign == 0U)
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A << shiftBits */
|
||||
|
||||
/* Shift input and store result in destination buffer. */
|
||||
*pDst++ = __SSAT(((q31_t) *pSrc++ << shiftBits), 16);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A >> shiftBits */
|
||||
|
||||
/* Shift input and store result in destination buffer. */
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicShift group
|
||||
*/
|
||||
@ -0,0 +1,181 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_shift_q31.c
|
||||
* Description: Shifts the elements of a Q31 vector by a specified number of bits
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
/**
|
||||
@defgroup BasicShift Vector Shift
|
||||
|
||||
Shifts the elements of a fixed-point vector by a specified number of bits.
|
||||
There are separate functions for Q7, Q15, and Q31 data types.
|
||||
The underlying algorithm used is:
|
||||
|
||||
<pre>
|
||||
pDst[n] = pSrc[n] << shift, 0 <= n < blockSize.
|
||||
</pre>
|
||||
|
||||
If <code>shift</code> is positive then the elements of the vector are shifted to the left.
|
||||
If <code>shift</code> is negative then the elements of the vector are shifted to the right.
|
||||
|
||||
The functions support in-place computation allowing the source and destination
|
||||
pointers to reference the same memory buffer.
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicShift
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Shifts the elements of a Q31 vector a specified number of bits.
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right.
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in the vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q31 range [0x80000000 0x7FFFFFFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_shift_q31(
|
||||
const q31_t * pSrc,
|
||||
int8_t shiftBits,
|
||||
q31_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
uint8_t sign = (shiftBits & 0x80); /* Sign of shiftBits */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
q31_t in, out; /* Temporary variables */
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
/* If the shift value is positive then do right shift else left shift */
|
||||
if (sign == 0U)
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A << shiftBits */
|
||||
|
||||
/* Shift input and store result in destination buffer. */
|
||||
in = *pSrc++;
|
||||
out = in << shiftBits;
|
||||
if (in != (out >> shiftBits))
|
||||
out = 0x7FFFFFFF ^ (in >> 31);
|
||||
*pDst++ = out;
|
||||
|
||||
in = *pSrc++;
|
||||
out = in << shiftBits;
|
||||
if (in != (out >> shiftBits))
|
||||
out = 0x7FFFFFFF ^ (in >> 31);
|
||||
*pDst++ = out;
|
||||
|
||||
in = *pSrc++;
|
||||
out = in << shiftBits;
|
||||
if (in != (out >> shiftBits))
|
||||
out = 0x7FFFFFFF ^ (in >> 31);
|
||||
*pDst++ = out;
|
||||
|
||||
in = *pSrc++;
|
||||
out = in << shiftBits;
|
||||
if (in != (out >> shiftBits))
|
||||
out = 0x7FFFFFFF ^ (in >> 31);
|
||||
*pDst++ = out;
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A >> shiftBits */
|
||||
|
||||
/* Shift input and store results in destination buffer. */
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
/* If the shift value is positive then do right shift else left shift */
|
||||
if (sign == 0U)
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A << shiftBits */
|
||||
|
||||
/* Shift input and store result in destination buffer. */
|
||||
*pDst++ = clip_q63_to_q31((q63_t) *pSrc++ << shiftBits);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A >> shiftBits */
|
||||
|
||||
/* Shift input and store result in destination buffer. */
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicShift group
|
||||
*/
|
||||
@ -0,0 +1,175 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_shift_q7.c
|
||||
* Description: Processing function for the Q7 Shifting
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicShift
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Shifts the elements of a Q7 vector a specified number of bits
|
||||
@param[in] pSrc points to the input vector
|
||||
@param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right.
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par onditions for optimum performance
|
||||
Input and output buffers should be aligned by 32-bit
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q7 range [0x80 0x7F] are saturated.
|
||||
*/
|
||||
|
||||
void arm_shift_q7(
|
||||
const q7_t * pSrc,
|
||||
int8_t shiftBits,
|
||||
q7_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
uint8_t sign = (shiftBits & 0x80); /* Sign of shiftBits */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q7_t in1, in2, in3, in4; /* Temporary input variables */
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
/* If the shift value is positive then do right shift else left shift */
|
||||
if (sign == 0U)
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A << shiftBits */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Read 4 inputs */
|
||||
in1 = *pSrc++;
|
||||
in2 = *pSrc++;
|
||||
in3 = *pSrc++;
|
||||
in4 = *pSrc++;
|
||||
|
||||
/* Pack and store result in destination buffer (in single write) */
|
||||
write_q7x4_ia (&pDst, __PACKq7(__SSAT((in1 << shiftBits), 8),
|
||||
__SSAT((in2 << shiftBits), 8),
|
||||
__SSAT((in3 << shiftBits), 8),
|
||||
__SSAT((in4 << shiftBits), 8) ));
|
||||
#else
|
||||
*pDst++ = (q7_t) __SSAT(((q15_t) *pSrc++ << shiftBits), 8);
|
||||
*pDst++ = (q7_t) __SSAT(((q15_t) *pSrc++ << shiftBits), 8);
|
||||
*pDst++ = (q7_t) __SSAT(((q15_t) *pSrc++ << shiftBits), 8);
|
||||
*pDst++ = (q7_t) __SSAT(((q15_t) *pSrc++ << shiftBits), 8);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A >> shiftBits */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Read 4 inputs */
|
||||
in1 = *pSrc++;
|
||||
in2 = *pSrc++;
|
||||
in3 = *pSrc++;
|
||||
in4 = *pSrc++;
|
||||
|
||||
/* Pack and store result in destination buffer (in single write) */
|
||||
write_q7x4_ia (&pDst, __PACKq7((in1 >> -shiftBits),
|
||||
(in2 >> -shiftBits),
|
||||
(in3 >> -shiftBits),
|
||||
(in4 >> -shiftBits) ));
|
||||
#else
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
/* If the shift value is positive then do right shift else left shift */
|
||||
if (sign == 0U)
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A << shiftBits */
|
||||
|
||||
/* Shift input and store result in destination buffer. */
|
||||
*pDst++ = (q7_t) __SSAT(((q15_t) *pSrc++ << shiftBits), 8);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A >> shiftBits */
|
||||
|
||||
/* Shift input and store result in destination buffer. */
|
||||
*pDst++ = (*pSrc++ >> -shiftBits);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicShift group
|
||||
*/
|
||||
@ -0,0 +1,148 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_sub_f32.c
|
||||
* Description: Floating-point vector subtraction
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@defgroup BasicSub Vector Subtraction
|
||||
|
||||
Element-by-element subtraction of two vectors.
|
||||
|
||||
<pre>
|
||||
pDst[n] = pSrcA[n] - pSrcB[n], 0 <= n < blockSize.
|
||||
</pre>
|
||||
|
||||
There are separate functions for floating-point, Q7, Q15, and Q31 data types.
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicSub
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Floating-point vector subtraction.
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
*/
|
||||
|
||||
void arm_sub_f32(
|
||||
const float32_t * pSrcA,
|
||||
const float32_t * pSrcB,
|
||||
float32_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined(ARM_MATH_NEON)
|
||||
float32x4_t vec1;
|
||||
float32x4_t vec2;
|
||||
float32x4_t res;
|
||||
|
||||
/* Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A - B */
|
||||
|
||||
/* Subtract and then store the results in the destination buffer. */
|
||||
vec1 = vld1q_f32(pSrcA);
|
||||
vec2 = vld1q_f32(pSrcB);
|
||||
res = vsubq_f32(vec1, vec2);
|
||||
vst1q_f32(pDst, res);
|
||||
|
||||
/* Increment pointers */
|
||||
pSrcA += 4;
|
||||
pSrcB += 4;
|
||||
pDst += 4;
|
||||
|
||||
/* Decrement the loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Tail */
|
||||
blkCnt = blockSize & 0x3;
|
||||
|
||||
#else
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A - B */
|
||||
|
||||
/* Subtract and store result in destination buffer. */
|
||||
*pDst++ = (*pSrcA++) - (*pSrcB++);
|
||||
|
||||
*pDst++ = (*pSrcA++) - (*pSrcB++);
|
||||
|
||||
*pDst++ = (*pSrcA++) - (*pSrcB++);
|
||||
|
||||
*pDst++ = (*pSrcA++) - (*pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
#endif /* #if defined(ARM_MATH_NEON) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A - B */
|
||||
|
||||
/* Subtract and store result in destination buffer. */
|
||||
*pDst++ = (*pSrcA++) - (*pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicSub group
|
||||
*/
|
||||
@ -0,0 +1,126 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_sub_q15.c
|
||||
* Description: Q15 vector subtraction
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicSub
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q15 vector subtraction.
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_sub_q15(
|
||||
const q15_t * pSrcA,
|
||||
const q15_t * pSrcB,
|
||||
q15_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
q31_t inA1, inA2;
|
||||
q31_t inB1, inB2;
|
||||
#endif
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A - B */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* read 2 times 2 samples at a time from sourceA */
|
||||
inA1 = read_q15x2_ia ((q15_t **) &pSrcA);
|
||||
inA2 = read_q15x2_ia ((q15_t **) &pSrcA);
|
||||
/* read 2 times 2 samples at a time from sourceB */
|
||||
inB1 = read_q15x2_ia ((q15_t **) &pSrcB);
|
||||
inB2 = read_q15x2_ia ((q15_t **) &pSrcB);
|
||||
|
||||
/* Subtract and store 2 times 2 samples at a time */
|
||||
write_q15x2_ia (&pDst, __QSUB16(inA1, inB1));
|
||||
write_q15x2_ia (&pDst, __QSUB16(inA2, inB2));
|
||||
#else
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A - B */
|
||||
|
||||
/* Subtract and store result in destination buffer. */
|
||||
#if defined (ARM_MATH_DSP)
|
||||
*pDst++ = (q15_t) __QSUB16(*pSrcA++, *pSrcB++);
|
||||
#else
|
||||
*pDst++ = (q15_t) __SSAT(((q31_t) *pSrcA++ - *pSrcB++), 16);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicSub group
|
||||
*/
|
||||
@ -0,0 +1,108 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_sub_q31.c
|
||||
* Description: Q31 vector subtraction
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicSub
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q31 vector subtraction.
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q31 range [0x80000000 0x7FFFFFFF] are saturated.
|
||||
*/
|
||||
|
||||
void arm_sub_q31(
|
||||
const q31_t * pSrcA,
|
||||
const q31_t * pSrcB,
|
||||
q31_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A - B */
|
||||
|
||||
/* Subtract and store result in destination buffer. */
|
||||
*pDst++ = __QSUB(*pSrcA++, *pSrcB++);
|
||||
|
||||
*pDst++ = __QSUB(*pSrcA++, *pSrcB++);
|
||||
|
||||
*pDst++ = __QSUB(*pSrcA++, *pSrcB++);
|
||||
|
||||
*pDst++ = __QSUB(*pSrcA++, *pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A - B */
|
||||
|
||||
/* Subtract and store result in destination buffer. */
|
||||
*pDst++ = __QSUB(*pSrcA++, *pSrcB++);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicSub group
|
||||
*/
|
||||
@ -0,0 +1,109 @@
|
||||
/* ----------------------------------------------------------------------
|
||||
* Project: CMSIS DSP Library
|
||||
* Title: arm_sub_q7.c
|
||||
* Description: Q7 vector subtraction
|
||||
*
|
||||
* $Date: 18. March 2019
|
||||
* $Revision: V1.6.0
|
||||
*
|
||||
* Target Processor: Cortex-M cores
|
||||
* -------------------------------------------------------------------- */
|
||||
/*
|
||||
* Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "arm_math.h"
|
||||
|
||||
/**
|
||||
@ingroup groupMath
|
||||
*/
|
||||
|
||||
/**
|
||||
@addtogroup BasicSub
|
||||
@{
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Q7 vector subtraction.
|
||||
@param[in] pSrcA points to the first input vector
|
||||
@param[in] pSrcB points to the second input vector
|
||||
@param[out] pDst points to the output vector
|
||||
@param[in] blockSize number of samples in each vector
|
||||
@return none
|
||||
|
||||
@par Scaling and Overflow Behavior
|
||||
The function uses saturating arithmetic.
|
||||
Results outside of the allowable Q7 range [0x80 0x7F] will be saturated.
|
||||
*/
|
||||
|
||||
void arm_sub_q7(
|
||||
const q7_t * pSrcA,
|
||||
const q7_t * pSrcB,
|
||||
q7_t * pDst,
|
||||
uint32_t blockSize)
|
||||
{
|
||||
uint32_t blkCnt; /* Loop counter */
|
||||
|
||||
#if defined (ARM_MATH_LOOPUNROLL)
|
||||
|
||||
/* Loop unrolling: Compute 4 outputs at a time */
|
||||
blkCnt = blockSize >> 2U;
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A - B */
|
||||
|
||||
#if defined (ARM_MATH_DSP)
|
||||
/* Subtract and store result in destination buffer (4 samples at a time). */
|
||||
write_q7x4_ia (&pDst, __QSUB8(read_q7x4_ia ((q7_t **) &pSrcA), read_q7x4_ia ((q7_t **) &pSrcB)));
|
||||
#else
|
||||
*pDst++ = (q7_t) __SSAT((q15_t) *pSrcA++ - *pSrcB++, 8);
|
||||
*pDst++ = (q7_t) __SSAT((q15_t) *pSrcA++ - *pSrcB++, 8);
|
||||
*pDst++ = (q7_t) __SSAT((q15_t) *pSrcA++ - *pSrcB++, 8);
|
||||
*pDst++ = (q7_t) __SSAT((q15_t) *pSrcA++ - *pSrcB++, 8);
|
||||
#endif
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
/* Loop unrolling: Compute remaining outputs */
|
||||
blkCnt = blockSize % 0x4U;
|
||||
|
||||
#else
|
||||
|
||||
/* Initialize blkCnt with number of samples */
|
||||
blkCnt = blockSize;
|
||||
|
||||
#endif /* #if defined (ARM_MATH_LOOPUNROLL) */
|
||||
|
||||
while (blkCnt > 0U)
|
||||
{
|
||||
/* C = A - B */
|
||||
|
||||
/* Subtract and store result in destination buffer. */
|
||||
*pDst++ = (q7_t) __SSAT((q15_t) *pSrcA++ - *pSrcB++, 8);
|
||||
|
||||
/* Decrement loop counter */
|
||||
blkCnt--;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
@} end of BasicSub group
|
||||
*/
|
||||
Reference in New Issue
Block a user