u_math: Add align function npot alignments

2010-06-13 16:07:49 +02:00
parent 3a3e80ff96
commit ed3d17e14c
1 changed files with 14 additions and 0 deletions
@@ -567,12 +567,26 @@ util_bswap16(uint16_t n)
 #define MAX3( A, B, C ) MAX2( MAX2( A, B ), C )


+/**
+ * Align a value, only works pot alignemnts.
+ */
 static INLINE int
 align(int value, int alignment)
 {
   return (value + alignment - 1) & ~(alignment - 1);
 }

+/**
+ * Works like align but on npot alignments.
+ */
+static INLINE size_t
+util_align_npot(size_t value, size_t alignment)
+{
+   if (value % alignment)
+      return value + (alignment - (value % alignment));
+   return value;
+}
+
 static INLINE unsigned
 u_minify(unsigned value, unsigned levels)
 {