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00005 #ifndef RATIONAL_H
00006 #define RATIONAL_H
00007
00008 typedef struct AVRational{
00009 int num;
00010 int den;
00011 } AVRational;
00012
00013 static inline int av_cmp_q(AVRational a, AVRational b){
00014 const int64_t tmp= a.num * (int64_t)b.den - b.num * (int64_t)a.den;
00015
00016 if(tmp) return (int)((tmp>>63)|1);
00017 else return 0;
00018 }
00019
00020 static inline double av_q2d(AVRational a){
00021 return a.num / (double) a.den;
00022 }
00023
00024 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
00025
00026 AVRational av_mul_q(AVRational b, AVRational c);
00027 AVRational av_div_q(AVRational b, AVRational c);
00028 AVRational av_add_q(AVRational b, AVRational c);
00029 AVRational av_sub_q(AVRational b, AVRational c);
00030 AVRational av_d2q(double d, int max);
00031
00032 #endif