1 files changed, 13 insertions, 4 deletions
diff --git a/sdl/math3d.c b/sdl/math3d.c
index b22c530..a808e34 100644
--- a/sdl/math3d.c
+++ b/sdl/math3d.c
@@ -1,6 +1,7 @@
-/* @2010 Kamil Kaminski
+/* math3d.c
+ *
+ * Math 3D Library
  *
- * math3d.c
  * 
  */
 
@@ -27,7 +28,6 @@ void m3dFindNormalf(M3DVector3f result, const M3DVector3f point1,
     m3dCrossProductf(result, v1, v2);
 }
 
-
 void m3dLoadIdentity33f(M3DMatrix33f m)
 {
     /* don't be fooled, this is still column major */
@@ -38,7 +38,6 @@ void m3dLoadIdentity33f(M3DMatrix33f m)
     memcpy(m, identity, sizeof(M3DMatrix33f));
 }
 
-
 void m3dLoadIdentity44f(M3DMatrix44f m) /* 4x4 float */
 {
     /* don't be fooled, this is still column major */
@@ -271,3 +270,13 @@ int m3dInvertMatrix44f(M3DMatrix44f dst, const M3DMatrix44f m)
     return 0;
 }
 
+unsigned int m3dPowerOfTwo(unsigned int n)
+{
+    unsigned int ret = 1;
+
+    while (ret < n)
+        ret <<= 1;
+
+    return ret;
+}
+