ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libavutil/mathematics.c

 /*
  * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
@@ skipping 118 matching lines @@
 int64_t av_rescale(int64_t a, int64_t b, int64_t c){
     return av_rescale_rnd(a, b, c, AV_ROUND_NEAR_INF);
 }
 
 int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq){
     int64_t b= bq.num * (int64_t)cq.den;
     int64_t c= cq.num * (int64_t)bq.den;
     return av_rescale_rnd(a, b, c, AV_ROUND_NEAR_INF);
 }
 
+int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b){
+    int64_t a= tb_a.num * (int64_t)tb_b.den;
+    int64_t b= tb_b.num * (int64_t)tb_a.den;
+    if (av_rescale_rnd(ts_a, a, b, AV_ROUND_DOWN) < ts_b) return -1;
+    if (av_rescale_rnd(ts_b, b, a, AV_ROUND_DOWN) < ts_a) return  1;
+    return 0;
+}
+
 #ifdef TEST
 #include "integer.h"
 #undef printf
 int main(void){
     int64_t a,b,c,d,e;
 
     for(a=7; a<(1LL<<62); a+=a/3+1){
         for(b=3; b<(1LL<<62); b+=b/4+1){
             for(c=9; c<(1LL<<62); c+=(c*2)/5+3){
                 int64_t r= c/2;
                 AVInteger ai;
                 ai= av_mul_i(av_int2i(a), av_int2i(b));
                 ai= av_add_i(ai, av_int2i(r));
 
                 d= av_i2int(av_div_i(ai, av_int2i(c)));
 
                 e= av_rescale(a,b,c);
 
                 if((double)a * (double)b / (double)c > (1LL<<63))
                     continue;
 
                 if(d!=e) printf("%"PRId64"*%"PRId64"/%"PRId64"= %"PRId64"=%"PRId64"\n", a, b, c, d, e);
             }
         }
     }
     return 0;
 }
 #endif