From 1405782cf4eaae7fd4bcb3d9da2c39f655314b41 Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Date: Sat, 2 Oct 2010 09:50:56 +0000
Subject: [PATCH] Avoid cast of double nan to int. It may cause exceptions on
some platform.
Originally committed as revision 25311 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavutil/rational.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/libavutil/rational.c b/libavutil/rational.c
index 0e0571e136d..efed674a323 100644
--- a/libavutil/rational.c
+++ b/libavutil/rational.c
@@ -96,10 +96,12 @@ AVRational av_sub_q(AVRational b, AVRational c){
AVRational av_d2q(double d, int max){
AVRational a;
#define LOG2 0.69314718055994530941723212145817656807550013436025
- int exponent= FFMAX( (int)(log(fabs(d) + 1e-20)/LOG2), 0);
- int64_t den= 1LL << (61 - exponent);
+ int exponent;
+ int64_t den;
if (isnan(d))
return (AVRational){0,0};
+ exponent = FFMAX( (int)(log(fabs(d) + 1e-20)/LOG2), 0);
+ den = 1LL << (61 - exponent);
av_reduce(&a.num, &a.den, (int64_t)(d * den + 0.5), den, max);
return a;
--
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