bl_mcu_sdk/examples/dsp/StatisticsFunctions_part1/mean.c

#include "ref.h"

void ref_mean_f32(float32_t *pSrc, uint32_t blockSize, float32_t *pResult)
{
    uint32_t i;
    float32_t sum = 0;

    for (i = 0; i < blockSize; i++) {
        sum += pSrc[i];
    }
    *pResult = sum / (float32_t)blockSize;
}

void ref_mean_q31(q31_t *pSrc, uint32_t blockSize, q31_t *pResult)
{
    uint32_t i;
    q63_t sum = 0;

    for (i = 0; i < blockSize; i++) {
        sum += pSrc[i];
    }
    *pResult = (q31_t)(sum / (int32_t)blockSize);
}

void ref_mean_q15(q15_t *pSrc, uint32_t blockSize, q15_t *pResult)
{
    uint32_t i;
    q31_t sum = 0;

    for (i = 0; i < blockSize; i++) {
        sum += pSrc[i];
    }
    *pResult = (q15_t)(sum / (int32_t)blockSize);
}

void ref_mean_q7(q7_t *pSrc, uint32_t blockSize, q7_t *pResult)
{
    uint32_t i;
    q31_t sum = 0;

    for (i = 0; i < blockSize; i++) {
        sum += pSrc[i];
    }
    *pResult = (q7_t)(sum / (int32_t)blockSize);
}