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author | Ali Labbene <ali.labbene@st.com> | 2019-12-11 08:59:21 +0100 |
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committer | Ali Labbene <ali.labbene@st.com> | 2019-12-16 16:35:24 +0100 |
commit | 9f95ff5b6ba01db09552b84a0ab79607060a2666 (patch) | |
tree | 8a6e0dda832555c692307869aed49d07ee7facfe /DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_dot_prod_q15.c | |
parent | 76177aa280494bb36d7a0bcbda1078d4db717020 (diff) | |
download | st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.gz st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.bz2 st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.zip |
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/ComplexMathFunctions/arm_cmplx_dot_prod_q15.c')
-rw-r--r-- | DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_dot_prod_q15.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_dot_prod_q15.c b/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_dot_prod_q15.c deleted file mode 100644 index d794e2c..0000000 --- a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_dot_prod_q15.c +++ /dev/null @@ -1,189 +0,0 @@ -/* ---------------------------------------------------------------------- -* Copyright (C) 2010-2014 ARM Limited. All rights reserved. -* -* $Date: 19. March 2015 -* $Revision: V.1.4.5 -* -* Project: CMSIS DSP Library -* Title: arm_cmplx_dot_prod_q15.c -* -* Description: Processing function for the Q15 Complex Dot product -* -* 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 groupCmplxMath - */ - -/** - * @addtogroup cmplx_dot_prod - * @{ - */ - -/** - * @brief Q15 complex dot product - * @param *pSrcA points to the first input vector - * @param *pSrcB points to the second input vector - * @param numSamples number of complex samples in each vector - * @param *realResult real part of the result returned here - * @param *imagResult imaginary part of the result returned here - * @return none. - * - * <b>Scaling and Overflow Behavior:</b> - * \par - * The function is implemented using an internal 64-bit accumulator. - * The intermediate 1.15 by 1.15 multiplications are performed with full precision and yield a 2.30 result. - * These are accumulated in a 64-bit accumulator with 34.30 precision. - * As a final step, the accumulators are converted to 8.24 format. - * The return results <code>realResult</code> and <code>imagResult</code> are in 8.24 format. - */ - -void arm_cmplx_dot_prod_q15( - q15_t * pSrcA, - q15_t * pSrcB, - uint32_t numSamples, - q31_t * realResult, - q31_t * imagResult) -{ - q63_t real_sum = 0, imag_sum = 0; /* Temporary result storage */ - q15_t a0,b0,c0,d0; - -#ifndef ARM_MATH_CM0_FAMILY - - /* Run the below code for Cortex-M4 and Cortex-M3 */ - uint32_t blkCnt; /* loop counter */ - - - /*loop Unrolling */ - blkCnt = numSamples >> 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) - { - a0 = *pSrcA++; - b0 = *pSrcA++; - c0 = *pSrcB++; - d0 = *pSrcB++; - - real_sum += (q31_t)a0 * c0; - imag_sum += (q31_t)a0 * d0; - real_sum -= (q31_t)b0 * d0; - imag_sum += (q31_t)b0 * c0; - - a0 = *pSrcA++; - b0 = *pSrcA++; - c0 = *pSrcB++; - d0 = *pSrcB++; - - real_sum += (q31_t)a0 * c0; - imag_sum += (q31_t)a0 * d0; - real_sum -= (q31_t)b0 * d0; - imag_sum += (q31_t)b0 * c0; - - a0 = *pSrcA++; - b0 = *pSrcA++; - c0 = *pSrcB++; - d0 = *pSrcB++; - - real_sum += (q31_t)a0 * c0; - imag_sum += (q31_t)a0 * d0; - real_sum -= (q31_t)b0 * d0; - imag_sum += (q31_t)b0 * c0; - - a0 = *pSrcA++; - b0 = *pSrcA++; - c0 = *pSrcB++; - d0 = *pSrcB++; - - real_sum += (q31_t)a0 * c0; - imag_sum += (q31_t)a0 * d0; - real_sum -= (q31_t)b0 * d0; - imag_sum += (q31_t)b0 * c0; - - /* Decrement the loop counter */ - blkCnt--; - } - - /* If the numSamples is not a multiple of 4, compute any remaining output samples here. - ** No loop unrolling is used. */ - blkCnt = numSamples % 0x4u; - - while(blkCnt > 0u) - { - a0 = *pSrcA++; - b0 = *pSrcA++; - c0 = *pSrcB++; - d0 = *pSrcB++; - - real_sum += (q31_t)a0 * c0; - imag_sum += (q31_t)a0 * d0; - real_sum -= (q31_t)b0 * d0; - imag_sum += (q31_t)b0 * c0; - - /* Decrement the loop counter */ - blkCnt--; - } - -#else - - /* Run the below code for Cortex-M0 */ - - while(numSamples > 0u) - { - a0 = *pSrcA++; - b0 = *pSrcA++; - c0 = *pSrcB++; - d0 = *pSrcB++; - - real_sum += a0 * c0; - imag_sum += a0 * d0; - real_sum -= b0 * d0; - imag_sum += b0 * c0; - - - /* Decrement the loop counter */ - numSamples--; - } - -#endif /* #ifndef ARM_MATH_CM0_FAMILY */ - - /* Store the real and imaginary results in 8.24 format */ - /* Convert real data in 34.30 to 8.24 by 6 right shifts */ - *realResult = (q31_t) (real_sum >> 6); - /* Convert imaginary data in 34.30 to 8.24 by 6 right shifts */ - *imagResult = (q31_t) (imag_sum >> 6); -} - -/** - * @} end of cmplx_dot_prod group - */ |