bl_mcu_sdk/examples/dsp/StatisticsFunctions_part1/max.c

#include "ref.h"

void ref_max_f32(float32_t *pSrc, uint32_t blockSize, float32_t *pResult,
                 uint32_t *pIndex)
{
    uint32_t i, ind = 0;
    float32_t max = -FLT_MAX;

    for (i = 0; i < blockSize; i++) {
        if (max < pSrc[i]) {
            max = pSrc[i];
            ind = i;
        }
    }
    *pResult = max;
    *pIndex = ind;
}

void ref_max_no_idx_f32(float32_t *pSrc, uint32_t blockSize, float32_t *pResult)
{
    uint32_t i = 0;
    float32_t max = -FLT_MAX;

    for (i = 0; i < blockSize; i++) {
        if (max < pSrc[i]) {
            max = pSrc[i];
        }
    }
    *pResult = max;
}

void ref_max_q31(q31_t *pSrc, uint32_t blockSize, q31_t *pResult,
                 uint32_t *pIndex)
{
    uint32_t i, ind = 0;
    q31_t max = INT_MIN;

    for (i = 0; i < blockSize; i++) {
        if (max < pSrc[i]) {
            max = pSrc[i];
            ind = i;
        }
    }
    *pResult = max;
    *pIndex = ind;
}

void ref_max_q15(q15_t *pSrc, uint32_t blockSize, q15_t *pResult,
                 uint32_t *pIndex)
{
    uint32_t i, ind = 0;
    q15_t max = SHRT_MIN;

    for (i = 0; i < blockSize; i++) {
        if (max < pSrc[i]) {
            max = pSrc[i];
            ind = i;
        }
    }
    *pResult = max;
    *pIndex = ind;
}

void ref_max_q7(q7_t *pSrc, uint32_t blockSize, q7_t *pResult, uint32_t *pIndex)
{
    uint32_t i, ind = 0;
    q7_t max = SCHAR_MIN;

    for (i = 0; i < blockSize; i++) {
        if (max < pSrc[i]) {
            max = pSrc[i];
            ind = i;
        }
    }
    *pResult = max;
    *pIndex = ind;
}