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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_mult_real_q31.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_mult_real_q31.c')
-rw-r--r-- | DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mult_real_q31.c | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mult_real_q31.c b/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mult_real_q31.c deleted file mode 100644 index 73db107..0000000 --- a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mult_real_q31.c +++ /dev/null @@ -1,223 +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_mult_real_q31.c -* -* Description: Q31 complex by real 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 groupCmplxMath - */ - -/** - * @addtogroup CmplxByRealMult - * @{ - */ - - -/** - * @brief Q31 complex-by-real multiplication - * @param[in] *pSrcCmplx points to the complex input vector - * @param[in] *pSrcReal points to the real input vector - * @param[out] *pCmplxDst points to the complex output vector - * @param[in] numSamples number of samples in each vector - * @return none. - * - * <b>Scaling and Overflow Behavior:</b> - * \par - * The function uses saturating arithmetic. - * Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] will be saturated. - */ - -void arm_cmplx_mult_real_q31( - q31_t * pSrcCmplx, - q31_t * pSrcReal, - q31_t * pCmplxDst, - uint32_t numSamples) -{ - q31_t inA1; /* Temporary variable to store input value */ - -#ifndef ARM_MATH_CM0_FAMILY - - /* Run the below code for Cortex-M4 and Cortex-M3 */ - uint32_t blkCnt; /* loop counters */ - q31_t inA2, inA3, inA4; /* Temporary variables to hold input data */ - q31_t inB1, inB2; /* Temporary variabels to hold input data */ - q31_t out1, out2, out3, out4; /* Temporary variables to hold output data */ - - /* 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) - { - /* C[2 * i] = A[2 * i] * B[i]. */ - /* C[2 * i + 1] = A[2 * i + 1] * B[i]. */ - /* read real input from complex input buffer */ - inA1 = *pSrcCmplx++; - inA2 = *pSrcCmplx++; - /* read input from real input bufer */ - inB1 = *pSrcReal++; - inB2 = *pSrcReal++; - /* read imaginary input from complex input buffer */ - inA3 = *pSrcCmplx++; - inA4 = *pSrcCmplx++; - - /* multiply complex input with real input */ - out1 = ((q63_t) inA1 * inB1) >> 32; - out2 = ((q63_t) inA2 * inB1) >> 32; - out3 = ((q63_t) inA3 * inB2) >> 32; - out4 = ((q63_t) inA4 * inB2) >> 32; - - /* sature the result */ - out1 = __SSAT(out1, 31); - out2 = __SSAT(out2, 31); - out3 = __SSAT(out3, 31); - out4 = __SSAT(out4, 31); - - /* get result in 1.31 format */ - out1 = out1 << 1; - out2 = out2 << 1; - out3 = out3 << 1; - out4 = out4 << 1; - - /* store the result to destination buffer */ - *pCmplxDst++ = out1; - *pCmplxDst++ = out2; - *pCmplxDst++ = out3; - *pCmplxDst++ = out4; - - /* read real input from complex input buffer */ - inA1 = *pSrcCmplx++; - inA2 = *pSrcCmplx++; - /* read input from real input bufer */ - inB1 = *pSrcReal++; - inB2 = *pSrcReal++; - /* read imaginary input from complex input buffer */ - inA3 = *pSrcCmplx++; - inA4 = *pSrcCmplx++; - - /* multiply complex input with real input */ - out1 = ((q63_t) inA1 * inB1) >> 32; - out2 = ((q63_t) inA2 * inB1) >> 32; - out3 = ((q63_t) inA3 * inB2) >> 32; - out4 = ((q63_t) inA4 * inB2) >> 32; - - /* sature the result */ - out1 = __SSAT(out1, 31); - out2 = __SSAT(out2, 31); - out3 = __SSAT(out3, 31); - out4 = __SSAT(out4, 31); - - /* get result in 1.31 format */ - out1 = out1 << 1; - out2 = out2 << 1; - out3 = out3 << 1; - out4 = out4 << 1; - - /* store the result to destination buffer */ - *pCmplxDst++ = out1; - *pCmplxDst++ = out2; - *pCmplxDst++ = out3; - *pCmplxDst++ = out4; - - /* Decrement the numSamples 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) - { - /* C[2 * i] = A[2 * i] * B[i]. */ - /* C[2 * i + 1] = A[2 * i + 1] * B[i]. */ - /* read real input from complex input buffer */ - inA1 = *pSrcCmplx++; - inA2 = *pSrcCmplx++; - /* read input from real input bufer */ - inB1 = *pSrcReal++; - - /* multiply complex input with real input */ - out1 = ((q63_t) inA1 * inB1) >> 32; - out2 = ((q63_t) inA2 * inB1) >> 32; - - /* sature the result */ - out1 = __SSAT(out1, 31); - out2 = __SSAT(out2, 31); - - /* get result in 1.31 format */ - out1 = out1 << 1; - out2 = out2 << 1; - - /* store the result to destination buffer */ - *pCmplxDst++ = out1; - *pCmplxDst++ = out2; - - /* Decrement the numSamples loop counter */ - blkCnt--; - } - -#else - - /* Run the below code for Cortex-M0 */ - - while(numSamples > 0u) - { - /* realOut = realA * realB. */ - /* imagReal = imagA * realB. */ - inA1 = *pSrcReal++; - /* store the result in the destination buffer. */ - *pCmplxDst++ = - (q31_t) clip_q63_to_q31(((q63_t) * pSrcCmplx++ * inA1) >> 31); - *pCmplxDst++ = - (q31_t) clip_q63_to_q31(((q63_t) * pSrcCmplx++ * inA1) >> 31); - - /* Decrement the numSamples loop counter */ - numSamples--; - } - -#endif /* #ifndef ARM_MATH_CM0_FAMILY */ - -} - -/** - * @} end of CmplxByRealMult group - */ |