Sound font reader TSf

source/engine/util.c

@@ -0,0 +1,21 @@
+#include "util.h"
+
+unsigned int powof2(unsigned int num)
+{
+    if (num != 0) {
+	num--;
+	num |= (num >> 1);
+	num |= (num >> 2);
+	num |= (num >> 4);
+	num |= (num >> 8);
+	num |= (num >> 16);
+	num++;
+    }
+
+    return num;
+}
+
+int ispow2(int num)
+{
+    return (num && !(num & (num - 1)));
+}