blob: b5ac28d46252191c613f1657c6a221d381315faf (
plain) (
blame)
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
|
#include "ref.h"
void ref_cmplx_mag_f32(
float32_t * pSrc,
float32_t * pDst,
uint32_t numSamples)
{
uint32_t i;
for(i=0;i<numSamples*2;i+=2)
{
*pDst++ = sqrtf(pSrc[i] * pSrc[i] + pSrc[i+1] * pSrc[i+1]);
}
}
void ref_cmplx_mag_q31(
q31_t * pSrc,
q31_t * pDst,
uint32_t numSamples)
{
uint32_t i;
q31_t acc0,acc1,out;
for(i=0;i<numSamples*2;i+=2)
{
acc0 = (q31_t)(((q63_t)pSrc[i] * pSrc[i]) >> 33);
acc1 = (q31_t)(((q63_t)pSrc[i+1] * pSrc[i+1]) >> 33);
out = acc0 + acc1;
*pDst++ = (q31_t)(sqrtf((float)out / 2147483648.0f) * 2147483648.0f);
}
}
void ref_cmplx_mag_q15(
q15_t * pSrc,
q15_t * pDst,
uint32_t numSamples)
{
uint32_t i;
q31_t acc0,acc1;
q15_t out;
for(i=0;i<numSamples*2;i+=2)
{
acc0 = pSrc[i] * pSrc[i];
acc1 = pSrc[i+1] * pSrc[i+1];
out = (q15_t) (((q63_t) acc0 + acc1) >> 17);
*pDst++ = (q15_t)(sqrtf((float)out / 32768.0f) * 32768.0f);
}
}
|
