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int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max){
36
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max){
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AVRational a0={0,1}, a1={1,0};
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int64_t a2n= x*a1.num + a0.num;
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int64_t a2d= x*a1.den + a0.den;