diff options
author | Gregory Maxwell <greg@xiph.org> | 2009-06-29 03:51:30 +0400 |
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committer | Gregory Maxwell <greg@xiph.org> | 2009-06-29 03:51:30 +0400 |
commit | b92dce32703aa0a7899db22c4d28e8cab6b5fdcf (patch) | |
tree | ee8b2a9db7ca8b8ac115ab44a674f6d1fdd76bd3 /tests | |
parent | 8d2c51af78cdbde1f7b764ffba8a2fc945bc2843 (diff) |
Additional mathops.h tests.
Diffstat (limited to 'tests')
-rw-r--r-- | tests/mathops-test.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/tests/mathops-test.c b/tests/mathops-test.c index 214e2c2..cb3c132 100644 --- a/tests/mathops-test.c +++ b/tests/mathops-test.c @@ -71,10 +71,75 @@ void testrsqrt(void) } } +#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>0.001) + { + 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>0.0005) + { + 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 testilog2(void) +{ + celt_word32_t x; + for (x=1;x<=268435455;x+=127) + { + celt_word32_t error = abs(celt_ilog2(x)-(int)floor(log2(x))); + if (error!=0) + { + printf("celt_ilog2 failed: celt_ilog2(x)!=floor(log2(x)) (x = %d, error = %d)\n",x,error); + ret = 1; + } + } +} +#endif + int main(void) { testdiv(); testsqrt(); testrsqrt(); +#ifndef FIXED_POINT + testlog2(); + testexp2(); + testexp2log2(); +#else + testilog2(); +#endif return ret; } |