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<= vs. >= 10l bug

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Originally committed as revision 5333 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2006-04-29 15:38:20 +00:00
parent 2848ce84d2
commit 5c1cb3792d
1 changed files with 9 additions and 5 deletions
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14
libavutil/mathematics.c
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@ -82,7 +82,7 @@ int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd){
// int o= a1 & 0x8000000000000000ULL;
a1+= a1 + ((a0>>i)&1);
t1+=t1;
if(/*o || */c >= a1){
if(/*o || */c <= a1){
a1 -= c;
t1++;
}
@ -109,12 +109,13 @@ int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq){
return av_rescale_rnd(a, b, c, AV_ROUND_NEAR_INF);
}
#if 0
#undef printf
main(){
int64_t a,b,c,d,e;
for(a=7; a<256*256*256*128LL; a=(a*3)+1){
for(b=3; b<256*256*256*128LL; b=(b*5)/4+1){
for(c=9; c<256*256*256*128LL; c=(c*7)/5+3 ){
for(a=7; a<256LL*256*256*256*128; a=(a*3)+1){
for(b=3; b<256LL*256*256*256*128; b=(b*5)/4+1){
for(c=9; c<256LL*256*256*256*128; c=(c*7)/5+3 ){
int64_t r= c/2;
AVInteger ai;
ai= av_mul_i(av_int2i(a), av_int2i(b));
@ -124,7 +125,10 @@ main(){
e= av_rescale(a,b,c);
if(d!=e) printf("%Ld*%Ld/%Ld= %Ld=%Ld\n"L, a, b, c, d, e);
if((double)a * (double)b / (double)c > (1LL<<63))
continue;
if(d!=e) printf("%Ld*%Ld/%Ld= %Ld=%Ld\n", a, b, c, d, e);
}
}
}