You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/* ----------------------------------------------------------------------
|
|
* Project: CMSIS DSP Library
|
|
* Title: arm_min_no_idx_f64.c
|
|
* Description: Maximum value of a floating-point vector without returning the index
|
|
*
|
|
* $Date: 10 August 2022
|
|
* $Revision: V1.10.1
|
|
*
|
|
* Target Processor: Cortex-M and Cortex-A cores
|
|
* -------------------------------------------------------------------- */
|
|
/*
|
|
* Copyright (C) 2010-2021 ARM Limited or its affiliates. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the License); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "dsp/statistics_functions.h"
|
|
|
|
/**
|
|
@ingroup groupStats
|
|
*/
|
|
|
|
|
|
/**
|
|
@addtogroup Min
|
|
@{
|
|
*/
|
|
|
|
/**
|
|
@brief Maximum value of a floating-point vector.
|
|
@param[in] pSrc points to the input vector
|
|
@param[in] blockSize number of samples in input vector
|
|
@param[out] pResult minimum value returned here
|
|
@return none
|
|
*/
|
|
void arm_min_no_idx_f64(
|
|
const float64_t *pSrc,
|
|
uint32_t blockSize,
|
|
float64_t *pResult)
|
|
{
|
|
float64_t minValue = F64_MAX;
|
|
float64_t newVal;
|
|
uint32_t blkCnt ;
|
|
#if defined(ARM_MATH_NEON) && defined(__aarch64__)
|
|
float64x2_t minValueV , newValV ;
|
|
minValueV = vdupq_n_f64(F64_MAX);
|
|
blkCnt = blockSize >> 1U;
|
|
while(blkCnt > 0)
|
|
{
|
|
newValV = vld1q_f64(pSrc);
|
|
minValueV = vminq_f64(minValueV, newValV);
|
|
pSrc += 2 ;
|
|
blkCnt--;
|
|
|
|
}
|
|
minValue =vgetq_lane_f64(minValueV, 0);
|
|
if(minValue > vgetq_lane_f64(minValueV, 1))
|
|
{
|
|
minValue = vgetq_lane_f64(minValueV, 1);
|
|
}
|
|
|
|
blkCnt = blockSize & 1 ;
|
|
#else
|
|
blkCnt = blockSize;
|
|
#endif
|
|
|
|
while (blkCnt > 0U)
|
|
{
|
|
newVal = *pSrc++;
|
|
|
|
/* compare for the minimum value */
|
|
if (minValue > newVal)
|
|
{
|
|
/* Update the minimum value and it's index */
|
|
minValue = newVal;
|
|
}
|
|
|
|
blkCnt --;
|
|
}
|
|
|
|
*pResult = minValue;
|
|
}
|
|
|
|
/**
|
|
@} end of Min group
|
|
*/
|