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avutil/rational: av_add_stable() test code

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-03 17:35:09 +01:00
parent b317f9459f
commit cd7037dd7a
1 changed files with 30 additions and 0 deletions
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30
libavutil/rational.c
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@ -171,6 +171,36 @@ int main(void)
}
}
}
for (a.num = 1; a.num <= 10; a.num++) {
for (a.den = 1; a.den <= 10; a.den++) {
if (av_gcd(a.num, a.den) > 1)
continue;
for (b.num = 1; b.num <= 10; b.num++) {
for (b.den = 1; b.den <= 10; b.den++) {
int start;
if (av_gcd(b.num, b.den) > 1)
continue;
if (av_cmp_q(b, a) < 0)
continue;
for (start = 0; start < 10 ; start++) {
int acc= start;
int i;
for (i = 0; i<100; i++) {
int exact = start + av_rescale_q(i+1, b, a);
acc = av_add_stable(a, acc, b, 1);
if (FFABS(acc - exact) > 2) {
av_log(NULL, AV_LOG_ERROR, "%d/%d %d/%d, %d %d\n", a.num,
a.den, b.num, b.den, acc, exact);
return 1;
}
}
}
}
}
}
}
return 0;
}
#endif