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Diffstat (limited to 'DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c')
| -rw-r--r-- | DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c b/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c deleted file mode 100644 index 497348b..0000000 --- a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c +++ /dev/null @@ -1,165 +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_mag_f32.c -* -* Description: Floating-point complex magnitude. -* -* 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 cmplx_mag Complex Magnitude - * - * Computes the magnitude of the elements of a complex data vector. - * - * The <code>pSrc</code> points to the source data and - * <code>pDst</code> points to the where the result should be written. - * <code>numSamples</code> specifies the number of complex samples - * in the input array and the data is stored in an interleaved fashion - * (real, imag, real, imag, ...). - * The input array has a total of <code>2*numSamples</code> values; - * the output array has a total of <code>numSamples</code> values. - * The underlying algorithm is used: - * - * <pre> - * for(n=0; n<numSamples; n++) { - * pDst[n] = sqrt(pSrc[(2*n)+0]^2 + pSrc[(2*n)+1]^2); - * } - * </pre> - * - * There are separate functions for floating-point, Q15, and Q31 data types. - */ - -/** - * @addtogroup cmplx_mag - * @{ - */ -/** - * @brief Floating-point complex magnitude. - * @param[in] *pSrc points to complex input buffer - * @param[out] *pDst points to real output buffer - * @param[in] numSamples number of complex samples in the input vector - * @return none. - * - */ - - -void arm_cmplx_mag_f32( - float32_t * pSrc, - float32_t * pDst, - uint32_t numSamples) -{ - float32_t realIn, imagIn; /* Temporary variables to hold input values */ - -#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) - { - - /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */ - realIn = *pSrc++; - imagIn = *pSrc++; - /* store the result in the destination buffer. */ - arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++); - - realIn = *pSrc++; - imagIn = *pSrc++; - arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++); - - realIn = *pSrc++; - imagIn = *pSrc++; - arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++); - - realIn = *pSrc++; - imagIn = *pSrc++; - arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++); - - - /* 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) - { - /* C[0] = sqrt(A[0] * A[0] + A[1] * A[1]) */ - realIn = *pSrc++; - imagIn = *pSrc++; - /* store the result in the destination buffer. */ - arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++); - - /* Decrement the loop counter */ - blkCnt--; - } - -#else - - /* Run the below code for Cortex-M0 */ - - while(numSamples > 0u) - { - /* out = sqrt((real * real) + (imag * imag)) */ - realIn = *pSrc++; - imagIn = *pSrc++; - /* store the result in the destination buffer. */ - arm_sqrt_f32((realIn * realIn) + (imagIn * imagIn), pDst++); - - /* Decrement the loop counter */ - numSamples--; - } - -#endif /* #ifndef ARM_MATH_CM0_FAMILY */ - -} - -/** - * @} end of cmplx_mag group - */ |