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authorAli Labbene <ali.labbene@st.com>2019-12-11 08:59:21 +0100
committerAli Labbene <ali.labbene@st.com>2019-12-16 16:35:24 +0100
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tree8a6e0dda832555c692307869aed49d07ee7facfe /DSP_Lib/Source/BasicMathFunctions/arm_mult_f32.c
parent76177aa280494bb36d7a0bcbda1078d4db717020 (diff)
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Official ARM version: v5.4.0
Add CMSIS V5.4.0, please refer to index.html available under \docs folder. Note: content of \CMSIS\Core\Include has been copied under \Include to keep the same structure used in existing projects, and thus avoid projects mass update Note: the following components have been removed from ARM original delivery (as not used in ST packages) - CMSIS_EW2018.pdf - .gitattributes - .gitignore - \Device - \CMSIS - \CoreValidation - \DAP - \Documentation - \DoxyGen - \Driver - \Pack - \RTOS\CMSIS_RTOS_Tutorial.pdf - \RTOS\RTX - \RTOS\Template - \RTOS2\RTX - \Utilities - All ARM/GCC projects files are deleted from \DSP, \RTOS and \RTOS2 Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3
Diffstat (limited to 'DSP_Lib/Source/BasicMathFunctions/arm_mult_f32.c')
-rw-r--r--DSP_Lib/Source/BasicMathFunctions/arm_mult_f32.c174
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diff --git a/DSP_Lib/Source/BasicMathFunctions/arm_mult_f32.c b/DSP_Lib/Source/BasicMathFunctions/arm_mult_f32.c
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--- a/DSP_Lib/Source/BasicMathFunctions/arm_mult_f32.c
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-/* ----------------------------------------------------------------------
-* Copyright (C) 2010-2014 ARM Limited. All rights reserved.
-*
-* $Date: 19. March 2015
-* $Revision: V.1.4.5
-*
-* Project: CMSIS DSP Library
-* Title: arm_mult_f32.c
-*
-* Description: Floating-point vector multiplication.
-*
-* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
-*
-* Redistribution and use in source and binary forms, with or without
-* modification, are permitted provided that the following conditions
-* are met:
-* - Redistributions of source code must retain the above copyright
-* notice, this list of conditions and the following disclaimer.
-* - Redistributions in binary form must reproduce the above copyright
-* notice, this list of conditions and the following disclaimer in
-* the documentation and/or other materials provided with the
-* distribution.
-* - Neither the name of ARM LIMITED nor the names of its contributors
-* may be used to endorse or promote products derived from this
-* software without specific prior written permission.
-*
-* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-* POSSIBILITY OF SUCH DAMAGE.
-* -------------------------------------------------------------------- */
-
-#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(
- float32_t * pSrcA,
- float32_t * pSrcB,
- float32_t * pDst,
- uint32_t blockSize)
-{
- uint32_t blkCnt; /* loop counters */
-#ifndef ARM_MATH_CM0_FAMILY
-
- /* Run the below code for Cortex-M4 and Cortex-M3 */
- float32_t inA1, inA2, inA3, inA4; /* temporary input variables */
- float32_t inB1, inB2, inB3, inB4; /* temporary input variables */
- float32_t out1, out2, out3, out4; /* temporary output variables */
-
- /* loop Unrolling */
- 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 * B */
- /* Multiply the inputs and store the results in output buffer */
- /* read sample from sourceA */
- inA1 = *pSrcA;
- /* read sample from sourceB */
- inB1 = *pSrcB;
- /* read sample from sourceA */
- inA2 = *(pSrcA + 1);
- /* read sample from sourceB */
- inB2 = *(pSrcB + 1);
-
- /* out = sourceA * sourceB */
- out1 = inA1 * inB1;
-
- /* read sample from sourceA */
- inA3 = *(pSrcA + 2);
- /* read sample from sourceB */
- inB3 = *(pSrcB + 2);
-
- /* out = sourceA * sourceB */
- out2 = inA2 * inB2;
-
- /* read sample from sourceA */
- inA4 = *(pSrcA + 3);
-
- /* store result to destination buffer */
- *pDst = out1;
-
- /* read sample from sourceB */
- inB4 = *(pSrcB + 3);
-
- /* out = sourceA * sourceB */
- out3 = inA3 * inB3;
-
- /* store result to destination buffer */
- *(pDst + 1) = out2;
-
- /* out = sourceA * sourceB */
- out4 = inA4 * inB4;
- /* store result to destination buffer */
- *(pDst + 2) = out3;
- /* store result to destination buffer */
- *(pDst + 3) = out4;
-
-
- /* update pointers to process next samples */
- pSrcA += 4u;
- pSrcB += 4u;
- pDst += 4u;
-
- /* Decrement the blockSize loop counter */
- blkCnt--;
- }
-
- /* If the blockSize is not a multiple of 4, compute any remaining output samples here.
- ** No loop unrolling is used. */
- blkCnt = blockSize % 0x4u;
-
-#else
-
- /* Run the below code for Cortex-M0 */
-
- /* Initialize blkCnt with number of samples */
- blkCnt = blockSize;
-
-#endif /* #ifndef ARM_MATH_CM0_FAMILY */
-
- while(blkCnt > 0u)
- {
- /* C = A * B */
- /* Multiply the inputs and store the results in output buffer */
- *pDst++ = (*pSrcA++) * (*pSrcB++);
-
- /* Decrement the blockSize loop counter */
- blkCnt--;
- }
-}
-
-/**
- * @} end of BasicMult group
- */