45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
#include "ref.h"
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void ref_cmplx_mult_cmplx_f32(float32_t *pSrcA, float32_t *pSrcB,
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float32_t *pDst, uint32_t numSamples)
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{
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uint32_t i;
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for (i = 0; i < numSamples * 2; i += 2) {
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pDst[i] = pSrcA[i] * pSrcB[i] - pSrcA[i + 1] * pSrcB[i + 1];
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pDst[i + 1] = pSrcA[i] * pSrcB[i + 1] + pSrcA[i + 1] * pSrcB[i];
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}
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}
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void ref_cmplx_mult_cmplx_q31(q31_t *pSrcA, q31_t *pSrcB, q31_t *pDst,
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uint32_t numSamples)
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{
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uint32_t i;
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q31_t mul1, mul2, mul3, mul4;
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for (i = 0; i < numSamples * 2; i += 2) {
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mul1 = ((q63_t)pSrcA[i] * pSrcB[i]) >> 33;
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mul2 = ((q63_t)pSrcA[i + 1] * pSrcB[i + 1]) >> 33;
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mul3 = ((q63_t)pSrcA[i] * pSrcB[i + 1]) >> 33;
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mul4 = ((q63_t)pSrcA[i + 1] * pSrcB[i]) >> 33;
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pDst[i] = mul1 - mul2;
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pDst[i + 1] = mul3 + mul4;
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}
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}
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void ref_cmplx_mult_cmplx_q15(q15_t *pSrcA, q15_t *pSrcB, q15_t *pDst,
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uint32_t numSamples)
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{
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uint32_t i;
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q31_t mul1, mul2, mul3, mul4;
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for (i = 0; i < numSamples * 2; i += 2) {
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mul1 = ((q31_t)pSrcA[i] * pSrcB[i]) >> 17;
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mul2 = ((q31_t)pSrcA[i + 1] * pSrcB[i + 1]) >> 17;
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mul3 = ((q31_t)pSrcA[i] * pSrcB[i + 1]) >> 17;
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mul4 = ((q31_t)pSrcA[i + 1] * pSrcB[i]) >> 17;
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pDst[i] = mul1 - mul2;
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pDst[i + 1] = mul3 + mul4;
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}
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}
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