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export gcd function as av_gcd()

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Originally committed as revision 16653 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs
2009-01-17 11:13:33 +00:00
parent 3194b00479
commit 9ce6c13879
14 changed files with 19 additions and 20 deletions
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4
libavutil/rational.c
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@@ -35,7 +35,7 @@
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max){
AVRational a0={0,1}, a1={1,0};
int sign= (nom<0) ^ (den<0);
int64_t gcd= ff_gcd(FFABS(nom), FFABS(den));
int64_t gcd= av_gcd(FFABS(nom), FFABS(den));
if(gcd){
nom = FFABS(nom)/gcd;
@@ -66,7 +66,7 @@ int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max)
nom= den;
den= next_den;
}
assert(ff_gcd(a1.num, a1.den) <= 1U);
assert(av_gcd(a1.num, a1.den) <= 1U);
*dst_nom = sign ? -a1.num : a1.num;
*dst_den = a1.den;