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authorAli Labbene <ali.labbene@st.com>2019-12-11 08:59:21 +0100
committerAli Labbene <ali.labbene@st.com>2019-12-16 16:35:24 +0100
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tree8a6e0dda832555c692307869aed49d07ee7facfe /DSP_Lib/Source/StatisticsFunctions/arm_min_q15.c
parent76177aa280494bb36d7a0bcbda1078d4db717020 (diff)
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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/StatisticsFunctions/arm_min_q15.c')
-rw-r--r--DSP_Lib/Source/StatisticsFunctions/arm_min_q15.c177
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diff --git a/DSP_Lib/Source/StatisticsFunctions/arm_min_q15.c b/DSP_Lib/Source/StatisticsFunctions/arm_min_q15.c
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-/* ----------------------------------------------------------------------
-* Copyright (C) 2010-2014 ARM Limited. All rights reserved.
-*
-* $Date: 19. March 2015
-* $Revision: V.1.4.5
-*
-* Project: CMSIS DSP Library
-* Title: arm_min_q15.c
-*
-* Description: Minimum value of a Q15 vector.
-*
-* 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 groupStats
- */
-
-
-/**
- * @addtogroup Min
- * @{
- */
-
-
-/**
- * @brief Minimum value of a Q15 vector.
- * @param[in] *pSrc points to the input vector
- * @param[in] blockSize length of the input vector
- * @param[out] *pResult minimum value returned here
- * @param[out] *pIndex index of minimum value returned here
- * @return none.
- *
- */
-
-void arm_min_q15(
- q15_t * pSrc,
- uint32_t blockSize,
- q15_t * pResult,
- uint32_t * pIndex)
-{
-#ifndef ARM_MATH_CM0_FAMILY
-
- /* Run the below code for Cortex-M4 and Cortex-M3 */
- q15_t minVal1, minVal2, out; /* Temporary variables to store the output value. */
- uint32_t blkCnt, outIndex, count; /* loop counter */
-
- /* Initialise the count value. */
- count = 0u;
- /* Initialise the index value to zero. */
- outIndex = 0u;
- /* Load first input value that act as reference value for comparision */
- out = *pSrc++;
-
- /* Loop unrolling */
- blkCnt = (blockSize - 1u) >> 2u;
-
- while(blkCnt > 0)
- {
- /* Initialize minVal to the next consecutive values one by one */
- minVal1 = *pSrc++;
- minVal2 = *pSrc++;
-
- /* compare for the minimum value */
- if(out > minVal1)
- {
- /* Update the minimum value and its index */
- out = minVal1;
- outIndex = count + 1u;
- }
-
- minVal1 = *pSrc++;
-
- /* compare for the minimum value */
- if(out > minVal2)
- {
- /* Update the minimum value and its index */
- out = minVal2;
- outIndex = count + 2u;
- }
-
- minVal2 = *pSrc++;
-
- /* compare for the minimum value */
- if(out > minVal1)
- {
- /* Update the minimum value and its index */
- out = minVal1;
- outIndex = count + 3u;
- }
-
- /* compare for the minimum value */
- if(out > minVal2)
- {
- /* Update the minimum value and its index */
- out = minVal2;
- outIndex = count + 4u;
- }
-
- count += 4u;
-
- blkCnt--;
- }
-
- /* if (blockSize - 1u ) is not multiple of 4 */
- blkCnt = (blockSize - 1u) % 4u;
-
-#else
-
- /* Run the below code for Cortex-M0 */
- q15_t minVal1, out; /* Temporary variables to store the output value. */
- uint32_t blkCnt, outIndex; /* loop counter */
-
- blkCnt = (blockSize - 1u);
-
- /* Initialise the index value to zero. */
- outIndex = 0u;
- /* Load first input value that act as reference value for comparision */
- out = *pSrc++;
-
-#endif // #ifndef ARM_MATH_CM0_FAMILY
-
- while(blkCnt > 0)
- {
- /* Initialize minVal to the next consecutive values one by one */
- minVal1 = *pSrc++;
-
- /* compare for the minimum value */
- if(out > minVal1)
- {
- /* Update the minimum value and it's index */
- out = minVal1;
- outIndex = blockSize - blkCnt;
- }
-
- blkCnt--;
-
- }
-
-
-
- /* Store the minimum value and its index into destination pointers */
- *pResult = out;
- *pIndex = outIndex;
-}
-
-/**
- * @} end of Min group
- */