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[feat][nmsis] add nmsis component and nn,dsp demo

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jzlv 2021-09-26 13:38:51 +08:00
parent b2aada479b
commit 5d1126d0f0
989 changed files with 286224 additions and 0 deletions
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48
examples/dsp/BasicMathFunctions_part1/mult.c Normal file
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#include "ref.h"
void ref_mult_f32(float32_t *pSrcA, float32_t *pSrcB, float32_t *pDst,
uint32_t blockSize)
{
uint32_t i;
for (i = 0; i < blockSize; i++) {
pDst[i] = pSrcA[i] * pSrcB[i];
}
}
void ref_mult_q31(q31_t *pSrcA, q31_t *pSrcB, q31_t *pDst, uint32_t blockSize)
{
uint32_t i;
q63_t temp;
for (i = 0; i < blockSize; i++) {
temp = ((q63_t)pSrcA[i] * pSrcB[i]) >> 32;
temp = temp << 1;
pDst[i] = ref_sat_q31(temp);
}
}
void ref_mult_q15(q15_t *pSrcA, q15_t *pSrcB, q15_t *pDst, uint32_t blockSize)
{
uint32_t i;
q31_t temp;
for (i = 0; i < blockSize; i++) {
temp = ((q31_t)pSrcA[i] * pSrcB[i]) >>
15; // this comment is for JD, this is specifically 15 and not 16
// like the q31 case might imply. This is because NMSIS DSP
// lib does it this way. No other reason.
pDst[i] = ref_sat_q15(temp);
}
}
void ref_mult_q7(q7_t *pSrcA, q7_t *pSrcB, q7_t *pDst, uint32_t blockSize)
{
uint32_t i;
q15_t temp;
for (i = 0; i < blockSize; i++) {
temp = ((q15_t)pSrcA[i] * pSrcB[i]) >> 7;
pDst[i] = ref_sat_q7(temp);
}
}