From 448524777a738374dc73b4222f9b3b435c303664 Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Date: Thu, 22 Jul 2010 22:05:21 +0000
Subject: Add the M_PHI constant, contains an approximation of the golden ratio
 irrational number.

Originally committed as revision 24439 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavutil/mathematics.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'libavutil/mathematics.h')

diff --git a/libavutil/mathematics.h b/libavutil/mathematics.h
index 3e5631116f..882a516393 100644
--- a/libavutil/mathematics.h
+++ b/libavutil/mathematics.h
@@ -38,6 +38,9 @@
 #ifndef M_LOG2_10
 #define M_LOG2_10      3.32192809488736234787  /* log_2 10 */
 #endif
+#ifndef M_PHI
+#define M_PHI          1.61803398874989484820   /* phi / golden ratio */
+#endif
 #ifndef M_PI
 #define M_PI           3.14159265358979323846  /* pi */
 #endif
-- 
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