util: Add log2() definition for MSC.

2008-11-12 17:14:07 +01:00
parent 1bfe7c36ba
commit 50357ad351
1 changed files with 5 additions and 0 deletions
@@ -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