[FFmpeg-devel] [PATCH 10/10] Document how av_cmp_q() deal when one of the values to be compared is 0/0.

[Stefano Sabatini]

---
 libavutil/rational.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/libavutil/rational.h b/libavutil/rational.h
index 2dd0c2c..bd2e711 100644
--- a/libavutil/rational.h
+++ b/libavutil/rational.h
@@ -41,6 +41,10 @@ typedef struct AVRational{
 
 /**
  * Compare two rationals.
+ * If one of the compared values is 0/0, the result of the comparison
+ * is always 0, so you should do an explicit check for that case
+ * rather than use this function.
+ *
  * @param a first rational
  * @param b second rational
  * @return 0 if a==b, 1 if a>b and -1 if a<b
-- 
1.7.1