1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
#include "ref.h"
void ref_cmplx_mult_cmplx_f32(
float32_t * pSrcA,
float32_t * pSrcB,
float32_t * pDst,
uint32_t numSamples)
{
uint32_t i;
for(i=0;i<numSamples*2;i+=2)
{
pDst[i] = pSrcA[i] * pSrcB[i] - pSrcA[i+1] * pSrcB[i+1];
pDst[i+1] = pSrcA[i] * pSrcB[i+1] + pSrcA[i+1] * pSrcB[i];
}
}
void ref_cmplx_mult_cmplx_q31(
q31_t * pSrcA,
q31_t * pSrcB,
q31_t * pDst,
uint32_t numSamples)
{
uint32_t i;
q31_t mul1, mul2, mul3, mul4;
for(i=0;i<numSamples*2;i+=2)
{
mul1 = ((q63_t)pSrcA[i] * pSrcB[i]) >> 33;
mul2 = ((q63_t)pSrcA[i+1] * pSrcB[i+1]) >> 33;
mul3 = ((q63_t)pSrcA[i] * pSrcB[i+1]) >> 33;
mul4 = ((q63_t)pSrcA[i+1] * pSrcB[i]) >> 33;
pDst[i] = mul1 - mul2;
pDst[i+1] = mul3 + mul4;
}
}
void ref_cmplx_mult_cmplx_q15(
q15_t * pSrcA,
q15_t * pSrcB,
q15_t * pDst,
uint32_t numSamples)
{
uint32_t i;
q31_t mul1, mul2, mul3, mul4;
for(i=0;i<numSamples*2;i+=2)
{
mul1 = ((q31_t)pSrcA[i] * pSrcB[i]) >> 17;
mul2 = ((q31_t)pSrcA[i+1] * pSrcB[i+1]) >> 17;
mul3 = ((q31_t)pSrcA[i] * pSrcB[i+1]) >> 17;
mul4 = ((q31_t)pSrcA[i+1] * pSrcB[i]) >> 17;
pDst[i] = mul1 - mul2;
pDst[i+1] = mul3 + mul4;
}
}
|