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author | Ali Labbene <ali.labbene@st.com> | 2019-12-11 08:59:21 +0100 |
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committer | Ali Labbene <ali.labbene@st.com> | 2019-12-16 16:35:24 +0100 |
commit | 9f95ff5b6ba01db09552b84a0ab79607060a2666 (patch) | |
tree | 8a6e0dda832555c692307869aed49d07ee7facfe /DSP_Lib/Source/MatrixFunctions/arm_mat_scale_q15.c | |
parent | 76177aa280494bb36d7a0bcbda1078d4db717020 (diff) | |
download | st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.gz st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.bz2 st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.zip |
Official ARM version: v5.4.0
Add CMSIS V5.4.0, please refer to index.html available under \docs folder.
Note: content of \CMSIS\Core\Include has been copied under \Include to keep the same structure
used in existing projects, and thus avoid projects mass update
Note: the following components have been removed from ARM original delivery (as not used in ST packages)
- CMSIS_EW2018.pdf
- .gitattributes
- .gitignore
- \Device
- \CMSIS
- \CoreValidation
- \DAP
- \Documentation
- \DoxyGen
- \Driver
- \Pack
- \RTOS\CMSIS_RTOS_Tutorial.pdf
- \RTOS\RTX
- \RTOS\Template
- \RTOS2\RTX
- \Utilities
- All ARM/GCC projects files are deleted from \DSP, \RTOS and \RTOS2
Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3
Diffstat (limited to 'DSP_Lib/Source/MatrixFunctions/arm_mat_scale_q15.c')
-rw-r--r-- | DSP_Lib/Source/MatrixFunctions/arm_mat_scale_q15.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/DSP_Lib/Source/MatrixFunctions/arm_mat_scale_q15.c b/DSP_Lib/Source/MatrixFunctions/arm_mat_scale_q15.c deleted file mode 100644 index 4e67cf9..0000000 --- a/DSP_Lib/Source/MatrixFunctions/arm_mat_scale_q15.c +++ /dev/null @@ -1,183 +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_scale_q15.c -* -* Description: Multiplies a Q15 matrix by a scalar. -* -* 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 MatrixScale - * @{ - */ - -/** - * @brief Q15 matrix scaling. - * @param[in] *pSrc points to input matrix - * @param[in] scaleFract fractional portion of the scale factor - * @param[in] shift number of bits to shift the result by - * @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. - * - * @details - * <b>Scaling and Overflow Behavior:</b> - * \par - * The input data <code>*pSrc</code> and <code>scaleFract</code> are in 1.15 format. - * These are multiplied to yield a 2.30 intermediate result and this is shifted with saturation to 1.15 format. - */ - -arm_status arm_mat_scale_q15( - const arm_matrix_instance_q15 * pSrc, - q15_t scaleFract, - int32_t shift, - arm_matrix_instance_q15 * pDst) -{ - q15_t *pIn = pSrc->pData; /* input data matrix pointer */ - q15_t *pOut = pDst->pData; /* output data matrix pointer */ - uint32_t numSamples; /* total number of elements in the matrix */ - int32_t totShift = 15 - shift; /* total shift to apply after scaling */ - uint32_t blkCnt; /* loop counters */ - arm_status status; /* status of matrix scaling */ - -#ifndef ARM_MATH_CM0_FAMILY - - q15_t in1, in2, in3, in4; - q31_t out1, out2, out3, out4; - q31_t inA1, inA2; - -#endif // #ifndef ARM_MATH_CM0_FAMILY - -#ifdef ARM_MATH_MATRIX_CHECK - /* Check for matrix mismatch */ - if((pSrc->numRows != pDst->numRows) || (pSrc->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) pSrc->numRows * pSrc->numCols; - -#ifndef ARM_MATH_CM0_FAMILY - - /* Run the below code for Cortex-M4 and Cortex-M3 */ - /* Loop Unrolling */ - blkCnt = numSamples >> 2; - - /* 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) * k */ - /* Scale, saturate and then store the results in the destination buffer. */ - /* Reading 2 inputs from memory */ - inA1 = _SIMD32_OFFSET(pIn); - inA2 = _SIMD32_OFFSET(pIn + 2); - - /* C = A * scale */ - /* Scale the inputs and then store the 2 results in the destination buffer - * in single cycle by packing the outputs */ - out1 = (q31_t) ((q15_t) (inA1 >> 16) * scaleFract); - out2 = (q31_t) ((q15_t) inA1 * scaleFract); - out3 = (q31_t) ((q15_t) (inA2 >> 16) * scaleFract); - out4 = (q31_t) ((q15_t) inA2 * scaleFract); - - out1 = out1 >> totShift; - inA1 = _SIMD32_OFFSET(pIn + 4); - out2 = out2 >> totShift; - inA2 = _SIMD32_OFFSET(pIn + 6); - out3 = out3 >> totShift; - out4 = out4 >> totShift; - - in1 = (q15_t) (__SSAT(out1, 16)); - in2 = (q15_t) (__SSAT(out2, 16)); - in3 = (q15_t) (__SSAT(out3, 16)); - in4 = (q15_t) (__SSAT(out4, 16)); - - _SIMD32_OFFSET(pOut) = __PKHBT(in2, in1, 16); - _SIMD32_OFFSET(pOut + 2) = __PKHBT(in4, in3, 16); - - /* update pointers to process next sampels */ - pIn += 4u; - pOut += 4u; - - - /* 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 */ - - /* Initialize blkCnt with number of samples */ - blkCnt = numSamples; - -#endif /* #ifndef ARM_MATH_CM0_FAMILY */ - - while(blkCnt > 0u) - { - /* C(m,n) = A(m,n) * k */ - /* Scale, saturate and then store the results in the destination buffer. */ - *pOut++ = - (q15_t) (__SSAT(((q31_t) (*pIn++) * scaleFract) >> totShift, 16)); - - /* Decrement the numSamples loop counter */ - blkCnt--; - } - /* Set status as ARM_MATH_SUCCESS */ - status = ARM_MATH_SUCCESS; - } - - /* Return to application */ - return (status); -} - -/** - * @} end of MatrixScale group - */ |