summaryrefslogtreecommitdiff
path: root/thirdparty/pvrtccompressor/BitUtility.h
diff options
context:
space:
mode:
Diffstat (limited to 'thirdparty/pvrtccompressor/BitUtility.h')
-rw-r--r--thirdparty/pvrtccompressor/BitUtility.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/thirdparty/pvrtccompressor/BitUtility.h b/thirdparty/pvrtccompressor/BitUtility.h
new file mode 100644
index 0000000000..588ff3e892
--- /dev/null
+++ b/thirdparty/pvrtccompressor/BitUtility.h
@@ -0,0 +1,19 @@
+#pragma once
+
+namespace Javelin {
+
+class BitUtility {
+public:
+ static bool IsPowerOf2(unsigned int x) {
+ return (x & (x - 1)) == 0;
+ }
+
+ static unsigned int RotateRight(unsigned int value, unsigned int shift) {
+ if ((shift &= sizeof(value) * 8 - 1) == 0) {
+ return value;
+ }
+ return (value >> shift) | (value << (sizeof(value) * 8 - shift));
+ }
+};
+
+}