From 65f988b7bb003e6503133231423a8f5192d32603 Mon Sep 17 00:00:00 2001
From: Loren Merritt <pengvado@akuvian.org>
Date: Thu, 14 Jan 2010 03:07:30 +0000
Subject: [PATCH] Fix x264_clz on inputs > 1<<31 (though x264 never generates
 such inputs)

---
 common/osdep.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/osdep.h b/common/osdep.h
index 14f06a85..0c8623ec 100644
--- a/common/osdep.h
+++ b/common/osdep.h
@@ -203,7 +203,7 @@ static ALWAYS_INLINE uint16_t endian_fix16( uint16_t x )
 static int ALWAYS_INLINE x264_clz( uint32_t x )
 {
     static uint8_t lut[16] = {4,3,2,2,1,1,1,1,0,0,0,0,0,0,0,0};
-    int y, z = ((x - 0x10000) >> 27) & 16;
+    int y, z = (((x >> 16) - 1) >> 27) & 16;
     x >>= z^16;
     z += y = ((x - 0x100) >> 28) & 8;
     x >>= y^8;
-- 
2.40.0