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Diffstat (limited to 'DSP_Lib/Source/MatrixFunctions/arm_mat_sub_q15.c')
| -rw-r--r-- | DSP_Lib/Source/MatrixFunctions/arm_mat_sub_q15.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/DSP_Lib/Source/MatrixFunctions/arm_mat_sub_q15.c b/DSP_Lib/Source/MatrixFunctions/arm_mat_sub_q15.c deleted file mode 100644 index cc5a7b9..0000000 --- a/DSP_Lib/Source/MatrixFunctions/arm_mat_sub_q15.c +++ /dev/null @@ -1,160 +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_mat_sub_q15.c -* -* Description: Q15 Matrix subtraction -* -* 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 groupMatrix - */ - -/** - * @addtogroup MatrixSub - * @{ - */ - -/** - * @brief Q15 matrix subtraction. - * @param[in] *pSrcA points to the first input matrix structure - * @param[in] *pSrcB points to the second input matrix structure - * @param[out] *pDst points to output matrix structure - * @return The function returns either - * <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking. - * - * <b>Scaling and Overflow Behavior:</b> - * \par - * The function uses saturating arithmetic. - * Results outside of the allowable Q15 range [0x8000 0x7FFF] will be saturated. - */ - -arm_status arm_mat_sub_q15( - const arm_matrix_instance_q15 * pSrcA, - const arm_matrix_instance_q15 * pSrcB, - arm_matrix_instance_q15 * pDst) -{ - q15_t *pInA = pSrcA->pData; /* input data matrix pointer A */ - q15_t *pInB = pSrcB->pData; /* input data matrix pointer B */ - q15_t *pOut = pDst->pData; /* output data matrix pointer */ - uint32_t numSamples; /* total number of elements in the matrix */ - uint32_t blkCnt; /* loop counters */ - arm_status status; /* status of matrix subtraction */ - - -#ifdef ARM_MATH_MATRIX_CHECK - - - /* Check for matrix mismatch condition */ - if((pSrcA->numRows != pSrcB->numRows) || - (pSrcA->numCols != pSrcB->numCols) || - (pSrcA->numRows != pDst->numRows) || (pSrcA->numCols != pDst->numCols)) - { - /* Set status as ARM_MATH_SIZE_MISMATCH */ - status = ARM_MATH_SIZE_MISMATCH; - } - else -#endif /* #ifdef ARM_MATH_MATRIX_CHECK */ - - { - /* Total number of samples in the input matrix */ - numSamples = (uint32_t) pSrcA->numRows * pSrcA->numCols; - -#ifndef ARM_MATH_CM0_FAMILY - - /* Run the below code for Cortex-M4 and Cortex-M3 */ - - /* Apply 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(m,n) = A(m,n) - B(m,n) */ - /* Subtract, Saturate and then store the results in the destination buffer. */ - *__SIMD32(pOut)++ = __QSUB16(*__SIMD32(pInA)++, *__SIMD32(pInB)++); - *__SIMD32(pOut)++ = __QSUB16(*__SIMD32(pInA)++, *__SIMD32(pInB)++); - - /* 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 = numSamples % 0x4u; - - while(blkCnt > 0u) - { - /* C(m,n) = A(m,n) - B(m,n) */ - /* Subtract and then store the results in the destination buffer. */ - *pOut++ = (q15_t) __QSUB16(*pInA++, *pInB++); - - /* Decrement the loop counter */ - blkCnt--; - } - -#else - - /* Run the below code for Cortex-M0 */ - - /* Initialize blkCnt with number of samples */ - blkCnt = numSamples; - - while(blkCnt > 0u) - { - /* C(m,n) = A(m,n) - B(m,n) */ - /* Subtract and then store the results in the destination buffer. */ - *pOut++ = (q15_t) __SSAT(((q31_t) * pInA++ - *pInB++), 16); - - /* Decrement the loop counter */ - blkCnt--; - } - -#endif /* #ifndef ARM_MATH_CM0_FAMILY */ - - /* Set status as ARM_MATH_SUCCESS */ - status = ARM_MATH_SUCCESS; - } - - /* Return to application */ - return (status); -} - -/** - * @} end of MatrixSub group - */ |