From 26d2496e46b50a8189c971de876fa1e27e3fe342 Mon Sep 17 00:00:00 2001
From: mru <mru@9553f0bf-9b14-0410-a0b8-cfaf0461ba5b>
Date: Tue, 3 Mar 2009 00:03:55 +0000
Subject: [PATCH] Add sign_extend() function to mathops.h

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@17738 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b
---
 libavcodec/mathops.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libavcodec/mathops.h b/libavcodec/mathops.h
index 880e94671..b92a6be13 100644
--- a/libavcodec/mathops.h
+++ b/libavcodec/mathops.h
@@ -113,5 +113,12 @@ static inline av_const int mid_pred(int a, int b, int c)
 }
 #endif
 
+#ifndef sign_extend
+static inline av_const int sign_extend(int val, unsigned bits)
+{
+    return (val << (INT_BIT - bits)) >> (INT_BIT - bits);
+}
+#endif
+
 #endif /* AVCODEC_MATHOPS_H */
 
-- 
2.39.2