From: Michal Krol <michal@tungstengraphics.com>
Date: Wed, 12 Nov 2008 16:14:07 +0000 (+0100)
Subject: util: Add log2() definition for MSC.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=50357ad35181b7b170abe8413d4ef772978aa5f5;p=mesa.git

util: Add log2() definition for MSC.
---

diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index d2eaa2e7f75..62272110ce3 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -161,6 +161,11 @@ static INLINE float logf( float f )
    return (float) log( (double) f );
 }
 
+static INLINE double log2( double x )
+{
+   return log( x ) / log( 2.0 );
+}
+
 #else
 /* Work-around an extra semi-colon in VS 2005 logf definition */
 #ifdef logf