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Diffstat (limited to 'DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c')
-rw-r--r-- | DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c b/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c deleted file mode 100644 index 04e8eca..0000000 --- a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mult_real_f32.c +++ /dev/null @@ -1,225 +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_f32.c -* -* Description: Floating-point 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 - */ - -/** - * @defgroup CmplxByRealMult Complex-by-Real Multiplication - * - * Multiplies a complex vector by a real vector and generates a complex result. - * The data in the complex arrays is stored in an interleaved fashion - * (real, imag, real, imag, ...). - * The parameter <code>numSamples</code> represents the number of complex - * samples processed. The complex arrays have a total of <code>2*numSamples</code> - * real values while the real array has a total of <code>numSamples</code> - * real values. - * - * The underlying algorithm is used: - * - * <pre> - * for(n=0; n<numSamples; n++) { - * pCmplxDst[(2*n)+0] = pSrcCmplx[(2*n)+0] * pSrcReal[n]; - * pCmplxDst[(2*n)+1] = pSrcCmplx[(2*n)+1] * pSrcReal[n]; - * } - * </pre> - * - * There are separate functions for floating-point, Q15, and Q31 data types. - */ - -/** - * @addtogroup CmplxByRealMult - * @{ - */ - - -/** - * @brief Floating-point 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. - */ - -void arm_cmplx_mult_real_f32( - float32_t * pSrcCmplx, - float32_t * pSrcReal, - float32_t * pCmplxDst, - uint32_t numSamples) -{ - float32_t in; /* Temporary variable to store input value */ - 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 variables to hold input data */ - float32_t inA5, inA6, inA7, inA8; /* Temporary variables to hold input data */ - float32_t inB1, inB2, inB3, inB4; /* Temporary variables to hold input data */ - float32_t out1, out2, out3, out4; /* Temporary variables to hold output data */ - float32_t out5, out6, out7, out8; /* 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 input from complex input buffer */ - inA1 = pSrcCmplx[0]; - inA2 = pSrcCmplx[1]; - /* read input from real input buffer */ - inB1 = pSrcReal[0]; - - /* read input from complex input buffer */ - inA3 = pSrcCmplx[2]; - - /* multiply complex buffer real input with real buffer input */ - out1 = inA1 * inB1; - - /* read input from complex input buffer */ - inA4 = pSrcCmplx[3]; - - /* multiply complex buffer imaginary input with real buffer input */ - out2 = inA2 * inB1; - - /* read input from real input buffer */ - inB2 = pSrcReal[1]; - /* read input from complex input buffer */ - inA5 = pSrcCmplx[4]; - - /* multiply complex buffer real input with real buffer input */ - out3 = inA3 * inB2; - - /* read input from complex input buffer */ - inA6 = pSrcCmplx[5]; - /* read input from real input buffer */ - inB3 = pSrcReal[2]; - - /* multiply complex buffer imaginary input with real buffer input */ - out4 = inA4 * inB2; - - /* read input from complex input buffer */ - inA7 = pSrcCmplx[6]; - - /* multiply complex buffer real input with real buffer input */ - out5 = inA5 * inB3; - - /* read input from complex input buffer */ - inA8 = pSrcCmplx[7]; - - /* multiply complex buffer imaginary input with real buffer input */ - out6 = inA6 * inB3; - - /* read input from real input buffer */ - inB4 = pSrcReal[3]; - - /* store result to destination bufer */ - pCmplxDst[0] = out1; - - /* multiply complex buffer real input with real buffer input */ - out7 = inA7 * inB4; - - /* store result to destination bufer */ - pCmplxDst[1] = out2; - - /* multiply complex buffer imaginary input with real buffer input */ - out8 = inA8 * inB4; - - /* store result to destination bufer */ - pCmplxDst[2] = out3; - pCmplxDst[3] = out4; - pCmplxDst[4] = out5; - - /* incremnet complex input buffer by 8 to process next samples */ - pSrcCmplx += 8u; - - /* store result to destination bufer */ - pCmplxDst[5] = out6; - - /* increment real input buffer by 4 to process next samples */ - pSrcReal += 4u; - - /* store result to destination bufer */ - pCmplxDst[6] = out7; - pCmplxDst[7] = out8; - - /* increment destination buffer by 8 to process next sampels */ - pCmplxDst += 8u; - - /* 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; - -#else - - /* Run the below code for Cortex-M0 */ - blkCnt = numSamples; - -#endif /* #ifndef ARM_MATH_CM0_FAMILY */ - - while(blkCnt > 0u) - { - /* C[2 * i] = A[2 * i] * B[i]. */ - /* C[2 * i + 1] = A[2 * i + 1] * B[i]. */ - in = *pSrcReal++; - /* store the result in the destination buffer. */ - *pCmplxDst++ = (*pSrcCmplx++) * (in); - *pCmplxDst++ = (*pSrcCmplx++) * (in); - - /* Decrement the numSamples loop counter */ - blkCnt--; - } -} - -/** - * @} end of CmplxByRealMult group - */ |