arm_copy_q15.c
130 lines
| 3.1 KiB
| text/x-c
|
CLexer
jeandet@pc-de-jeandet3.LAB-LPP.LOCAL
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r41 | /* ---------------------------------------------------------------------- | ||
| * Copyright (C) 2010 ARM Limited. All rights reserved. | ||||
| * | ||||
| * $Date: 15. July 2011 | ||||
| * $Revision: V1.0.10 | ||||
| * | ||||
| * Project: CMSIS DSP Library | ||||
| * Title: arm_copy_q15.c | ||||
| * | ||||
| * Description: Copies the elements of a Q15 vector. | ||||
| * | ||||
| * Target Processor: Cortex-M4/Cortex-M3/Cortex-M0 | ||||
| * | ||||
| * Version 1.0.10 2011/7/15 | ||||
| * Big Endian support added and Merged M0 and M3/M4 Source code. | ||||
| * | ||||
| * Version 1.0.3 2010/11/29 | ||||
| * Re-organized the CMSIS folders and updated documentation. | ||||
| * | ||||
| * Version 1.0.2 2010/11/11 | ||||
| * Documentation updated. | ||||
| * | ||||
| * Version 1.0.1 2010/10/05 | ||||
| * Production release and review comments incorporated. | ||||
| * | ||||
| * Version 1.0.0 2010/09/20 | ||||
| * Production release and review comments incorporated. | ||||
| * | ||||
| * Version 0.0.7 2010/06/10 | ||||
| * Misra-C changes done | ||||
| * -------------------------------------------------------------------- */ | ||||
| #include "arm_math.h" | ||||
| /** | ||||
| * @ingroup groupSupport | ||||
| */ | ||||
| /** | ||||
| * @addtogroup copy | ||||
| * @{ | ||||
| */ | ||||
| /** | ||||
| * @brief Copies the elements of a Q15 vector. | ||||
| * @param[in] *pSrc points to input vector | ||||
| * @param[out] *pDst points to output vector | ||||
| * @param[in] blockSize length of the input vector | ||||
| * @return none. | ||||
| * | ||||
| */ | ||||
| void arm_copy_q15( | ||||
| q15_t * pSrc, | ||||
| q15_t * pDst, | ||||
| uint32_t blockSize) | ||||
| { | ||||
| uint32_t blkCnt; /* loop counter */ | ||||
| #ifndef ARM_MATH_CM0 | ||||
| /* Run the below code for Cortex-M4 and Cortex-M3 */ | ||||
| q15_t in1, in2; /* Temporary variables */ | ||||
| /*loop Unrolling */ | ||||
| blkCnt = blockSize >> 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 = A */ | ||||
| /* Read two inputs */ | ||||
| in1 = *pSrc++; | ||||
| in2 = *pSrc++; | ||||
| #ifndef ARM_MATH_BIG_ENDIAN | ||||
| /* Store the values in the destination buffer by packing the two inputs */ | ||||
| *__SIMD32(pDst)++ = __PKHBT(in1, in2, 16); | ||||
| in1 = *pSrc++; | ||||
| in2 = *pSrc++; | ||||
| *__SIMD32(pDst)++ = __PKHBT(in1, in2, 16); | ||||
| #else | ||||
| /* Store the values in the destination buffer by packing the two inputs */ | ||||
| *__SIMD32(pDst)++ = __PKHBT(in2, in1, 16); | ||||
| in1 = *pSrc++; | ||||
| in2 = *pSrc++; | ||||
| *__SIMD32(pDst)++ = __PKHBT(in2, in1, 16); | ||||
| #endif /* #ifndef ARM_MATH_BIG_ENDIAN */ | ||||
| /* Decrement the loop counter */ | ||||
| blkCnt--; | ||||
| } | ||||
| /* If the blockSize is not a multiple of 4, compute any remaining output samples here. | ||||
| ** No loop unrolling is used. */ | ||||
| blkCnt = blockSize % 0x4u; | ||||
| #else | ||||
| /* Run the below code for Cortex-M0 */ | ||||
| /* Loop over blockSize number of values */ | ||||
| blkCnt = blockSize; | ||||
| #endif /* #ifndef ARM_MATH_CM0 */ | ||||
| while(blkCnt > 0u) | ||||
| { | ||||
| /* C = A */ | ||||
| /* Copy and then store the value in the destination buffer */ | ||||
| *pDst++ = *pSrc++; | ||||
| /* Decrement the loop counter */ | ||||
| blkCnt--; | ||||
| } | ||||
| } | ||||
| /** | ||||
| * @} end of BasicCopy group | ||||
| */ | ||||