eden-emu/opus
20
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Unit tests for bitexact_cos() and bitexact_log2tan().

Browse source
This commit is contained in:
Gregory Maxwell 2011-08-07 22:42:56 -04:00 • committed by Jean-Marc Valin
parent 817220e91d
commit 5e9f7fc31d
1 changed files with 60 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

60
libcelt/tests/mathops-test.c
View file

@ -3,7 +3,12 @@
#endif
#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>
@ -57,6 +62,59 @@ void testsqrt(void)
}
}
void testbitexactcos(void)
{
int i;
opus_int32 min_d,max_d,last,chk;
chk=max_d=0;
last=min_d=32767;
for(i=0;i<16385;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!=91017006)||(max_d!=5)||(min_d!=0)||(bitexact_cos(0)!=32767)||
(bitexact_cos(16384)!=1)||(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=30690;
for(i=0;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!=16578548)||(max_d!=3219)||(min_d!=-2)||fail||
(bitexact_log2tan(32767,1)!=30690)||(bitexact_log2tan(30274,12540)!=2611)||
(bitexact_log2tan(23171,23171)!=0))
{
fprintf (stderr, "bitexact_log2tan failed\n");
ret = 1;
}
}
#ifndef FIXED_POINT
void testlog2(void)
{
@ -160,6 +218,8 @@ void testilog2(void)
int main(void)
{
testbitexactcos();
testbitexactlog2tan();
testdiv();
testsqrt();
testlog2();