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Diffstat (limited to 'DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_conj_q15.c')
| -rw-r--r-- | DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_conj_q15.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_conj_q15.c b/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_conj_q15.c deleted file mode 100644 index c1ce26c..0000000 --- a/DSP_Lib/Source/ComplexMathFunctions/arm_cmplx_conj_q15.c +++ /dev/null @@ -1,161 +0,0 @@ -/* ---------------------------------------------------------------------- -* Copyright (C) 2010-2014 ARM Limited. All rights reserved. -* -* $Date: 19. October 2015 -* $Revision: V.1.4.5 a -* -* Project: CMSIS DSP Library -* Title: arm_cmplx_conj_q15.c -* -* Description: Q15 complex conjugate. -* -* 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_conj - * @{ - */ - -/** - * @brief Q15 complex conjugate. - * @param *pSrc points to the input vector - * @param *pDst points to the output vector - * @param numSamples number of complex samples in each vector - * @return none. - * - * <b>Scaling and Overflow Behavior:</b> - * \par - * The function uses saturating arithmetic. - * The Q15 value -1 (0x8000) will be saturated to the maximum allowable positive value 0x7FFF. - */ - -void arm_cmplx_conj_q15( - q15_t * pSrc, - q15_t * pDst, - uint32_t numSamples) -{ - -#ifndef ARM_MATH_CM0_FAMILY - - /* Run the below code for Cortex-M4 and Cortex-M3 */ - uint32_t blkCnt; /* loop counter */ - q31_t in1, in2, in3, in4; - q31_t zero = 0; - - /*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]+jC[1] = A[0]+ j (-1) A[1] */ - /* Calculate Complex Conjugate and then store the results in the destination buffer. */ - in1 = *__SIMD32(pSrc)++; - in2 = *__SIMD32(pSrc)++; - in3 = *__SIMD32(pSrc)++; - in4 = *__SIMD32(pSrc)++; - -#ifndef ARM_MATH_BIG_ENDIAN - - in1 = __QASX(zero, in1); - in2 = __QASX(zero, in2); - in3 = __QASX(zero, in3); - in4 = __QASX(zero, in4); - -#else - - in1 = __QSAX(zero, in1); - in2 = __QSAX(zero, in2); - in3 = __QSAX(zero, in3); - in4 = __QSAX(zero, in4); - -#endif /* #ifndef ARM_MATH_BIG_ENDIAN */ - - in1 = ((uint32_t) in1 >> 16) | ((uint32_t) in1 << 16); - in2 = ((uint32_t) in2 >> 16) | ((uint32_t) in2 << 16); - in3 = ((uint32_t) in3 >> 16) | ((uint32_t) in3 << 16); - in4 = ((uint32_t) in4 >> 16) | ((uint32_t) in4 << 16); - - *__SIMD32(pDst)++ = in1; - *__SIMD32(pDst)++ = in2; - *__SIMD32(pDst)++ = in3; - *__SIMD32(pDst)++ = in4; - - /* 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]+jC[1] = A[0]+ j (-1) A[1] */ - /* Calculate Complex Conjugate and then store the results in the destination buffer. */ - *pDst++ = *pSrc++; - *pDst++ = __SSAT(-*pSrc++, 16); - - /* Decrement the loop counter */ - blkCnt--; - } - -#else - - q15_t in; - - /* Run the below code for Cortex-M0 */ - - while(numSamples > 0u) - { - /* realOut + j (imagOut) = realIn+ j (-1) imagIn */ - /* Calculate Complex Conjugate and then store the results in the destination buffer. */ - *pDst++ = *pSrc++; - in = *pSrc++; - *pDst++ = (in == (q15_t) 0x8000) ? 0x7fff : -in; - - /* Decrement the loop counter */ - numSamples--; - } - -#endif /* #ifndef ARM_MATH_CM0_FAMILY */ - -} - -/** - * @} end of cmplx_conj group - */ |