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use float to calc gamma, cleanup

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TT 2016-09-28 22:48:53 +09:00
parent 90db23ffc0
commit c1decf606b
5 changed files with 35 additions and 38 deletions
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20
dsp.c
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@ -73,7 +73,7 @@ hilbert_transform(void)
}
}
void calclate_gamma(void)
void calclate_gamma(float *gamma)
#if 0
{
__SIMD32_TYPE *r = __SIMD32_CONST(refiq_buf);
@ -103,23 +103,23 @@ void calclate_gamma(void)
int16_t *r = refiq_buf;
int16_t *s = samp_buf;
int len = SAMPLE_LEN/5;
double acc_r = 0;
double acc_i = 0;
double acc_ref = 0;
float acc_r = 0;
float acc_i = 0;
float acc_ref = 0;
int i;
double rn;
float rn;
for (i = 0; i < len; i++) {
int16_t s0 = *s++;
int16_t rr = *r++;
int16_t ri = *r++;
acc_r += (double)(s0 * rr);
acc_i += (double)(s0 * ri);
acc_ref += (double)rr*rr + (double)ri*ri;
acc_r += (float)(s0 * rr);
acc_i += (float)(s0 * ri);
acc_ref += (float)rr*rr + (float)ri*ri;
}
rn = sqrtf(acc_ref / len);
gamma_real = 16 * acc_r / rn / len;
gamma_imag = 16 * acc_i / rn / len;
gamma[0] = 16 * acc_r / rn / len;
gamma[1] = 16 * acc_i / rn / len;
}
#endif