ref: cc71cded7690c1fb0912c8e54919cf3462f521d6
dir: /celt/tests/test_unit_mathops.c/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifndef CUSTOM_MODES
#define CUSTOM_MODES
#endif
#define CELT_C
#include "mathops.c"
#include "entenc.c"
#include "entdec.c"
#include "entcode.c"
#include "bands.c"
#include "vq.c"
#include "cwrs.c"
#include <stdio.h>
#include <math.h>
#ifdef FIXED_POINT
#define WORD "%d"
#else
#define WORD "%f"
#endif
int ret = 0;
void testdiv(void)
{
opus_int32 i;
for (i=1;i<=327670;i++)
{
double prod;
opus_val32 val;
val = celt_rcp(i);
#ifdef FIXED_POINT
prod = (1./32768./65526.)*val*i;
#else
prod = val*i;
#endif
if (fabs(prod-1) > .00025)
{
fprintf (stderr, "div failed: 1/%d="WORD" (product = %f)\n", i, val, prod);
ret = 1;
}
}
}
void testsqrt(void)
{
opus_int32 i;
for (i=1;i<=1000000000;i++)
{
double ratio;
opus_val16 val;
val = celt_sqrt(i);
ratio = val/sqrt(i);
if (fabs(ratio - 1) > .0005 && fabs(val-sqrt(i)) > 2)
{
fprintf (stderr, "sqrt failed: sqrt(%d)="WORD" (ratio = %f)\n", i, val, ratio);
ret = 1;
}
i+= i>>10;
}
}
void testbitexactcos(void)
{
int i;
opus_int32 min_d,max_d,last,chk;
chk=max_d=0;
last=min_d=32767;
for(i=64;i<=16320;i++)
{
opus_int32 d;
opus_int32 q=bitexact_cos(i);
chk ^= q*i;
d = last - q;
if (d>max_d)max_d=d;
if (d<min_d)min_d=d;
last = q;
}
if ((chk!=89408644)||(max_d!=5)||(min_d!=0)||(bitexact_cos(64)!=32767)||
(bitexact_cos(16320)!=200)||(bitexact_cos(8192)!=23171))
{
fprintf (stderr, "bitexact_cos failed\n");
ret = 1;
}
}
void testbitexactlog2tan(void)
{
int i,fail;
opus_int32 min_d,max_d,last,chk;
fail=chk=max_d=0;
last=min_d=15059;
for(i=64;i<8193;i++)
{
opus_int32 d;
opus_int32 mid=bitexact_cos(i);
opus_int32 side=bitexact_cos(16384-i);
opus_int32 q=bitexact_log2tan(mid,side);
chk ^= q*i;
d = last - q;
if (q!=-1*bitexact_log2tan(side,mid))
fail = 1;
if (d>max_d)max_d=d;
if (d<min_d)min_d=d;
last = q;
}
if ((chk!=15821257)||(max_d!=61)||(min_d!=-2)||fail||
(bitexact_log2tan(32767,200)!=15059)||(bitexact_log2tan(30274,12540)!=2611)||
(bitexact_log2tan(23171,23171)!=0))
{
fprintf (stderr, "bitexact_log2tan failed\n");
ret = 1;
}
}
#ifndef FIXED_POINT
void testlog2(void)
{
float x;
for (x=0.001;x<1677700.0;x+=(x/8.0))
{
float error = fabs((1.442695040888963387*log(x))-celt_log2(x));
if (error>0.0009)
{
fprintf (stderr, "celt_log2 failed: fabs((1.442695040888963387*log(x))-celt_log2(x))>0.001 (x = %f, error = %f)\n", x,error);
ret = 1;
}
}
}
void testexp2(void)
{
float x;
for (x=-11.0;x<24.0;x+=0.0007)
{
float error = fabs(x-(1.442695040888963387*log(celt_exp2(x))));
if (error>0.0002)
{
fprintf (stderr, "celt_exp2 failed: fabs(x-(1.442695040888963387*log(celt_exp2(x))))>0.0005 (x = %f, error = %f)\n", x,error);
ret = 1;
}
}
}
void testexp2log2(void)
{
float x;
for (x=-11.0;x<24.0;x+=0.0007)
{
float error = fabs(x-(celt_log2(celt_exp2(x))));
if (error>0.001)
{
fprintf (stderr, "celt_log2/celt_exp2 failed: fabs(x-(celt_log2(celt_exp2(x))))>0.001 (x = %f, error = %f)\n", x,error);
ret = 1;
}
}
}
#else
void testlog2(void)
{
opus_val32 x;
for (x=8;x<1073741824;x+=(x>>3))
{
float error = fabs((1.442695040888963387*log(x/16384.0))-celt_log2(x)/1024.0);
if (error>0.003)
{
fprintf (stderr, "celt_log2 failed: x = %ld, error = %f\n", (long)x,error);
ret = 1;
}
}
}
void testexp2(void)
{
opus_val16 x;
for (x=-32768;x<15360;x++)
{
float error1 = fabs(x/1024.0-(1.442695040888963387*log(celt_exp2(x)/65536.0)));
float error2 = fabs(exp(0.6931471805599453094*x/1024.0)-celt_exp2(x)/65536.0);
if (error1>0.0002&&error2>0.00004)
{
fprintf (stderr, "celt_exp2 failed: x = "WORD", error1 = %f, error2 = %f\n", x,error1,error2);
ret = 1;
}
}
}
void testexp2log2(void)
{
opus_val32 x;
for (x=8;x<65536;x+=(x>>3))
{
float error = fabs(x-0.25*celt_exp2(celt_log2(x)))/16384;
if (error>0.004)
{
fprintf (stderr, "celt_log2/celt_exp2 failed: fabs(x-(celt_exp2(celt_log2(x))))>0.001 (x = %ld, error = %f)\n", (long)x,error);
ret = 1;
}
}
}
void testilog2(void)
{
opus_val32 x;
for (x=1;x<=268435455;x+=127)
{
opus_val32 lg;
opus_val32 y;
lg = celt_ilog2(x);
if (lg<0 || lg>=31)
{
printf("celt_ilog2 failed: 0<=celt_ilog2(x)<31 (x = %d, celt_ilog2(x) = %d)\n",x,lg);
ret = 1;
}
y = 1<<lg;
if (x<y || (x>>1)>=y)
{
printf("celt_ilog2 failed: 2**celt_ilog2(x)<=x<2**(celt_ilog2(x)+1) (x = %d, 2**celt_ilog2(x) = %d)\n",x,y);
ret = 1;
}
}
}
#endif
int main(void)
{
testbitexactcos();
testbitexactlog2tan();
testdiv();
testsqrt();
testlog2();
testexp2();
testexp2log2();
#ifdef FIXED_POINT
testilog2();
#endif
return ret;
}