diff --git a/test/gtx/gtx_bit.cpp b/test/gtx/gtx_bit.cpp
index b8009f40..ba98a40d 100644
--- a/test/gtx/gtx_bit.cpp
+++ b/test/gtx/gtx_bit.cpp
@@ -2,7 +2,7 @@
 // OpenGL Mathematics Copyright (c) 2005 - 2014 G-Truc Creation (www.g-truc.net)
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 // Created : 2010-09-16
-// Updated : 2010-09-16
+// Updated : 2014-10-25
 // Licence : This source is under MIT licence
 // File    : test/gtx/bit.cpp
 ///////////////////////////////////////////////////////////////////////////////////////////////////
@@ -11,10 +11,45 @@
 #include <glm/gtc/type_precision.hpp>
 
 
+namespace isPowerOfTwo
+{
+	template <typename genType>
+	struct type
+	{
+		genType		Value;
+		bool		Return;
+	};
+
+	type<int> const DataI32[] =
+	{
+		{0x00000001, true},
+		{0x00000002, true},
+		{0x00000004, true},
+		{0xffffffff, true},
+		{0x00000000, true},
+		{0x00000003, true}
+	};
+
+	int test()
+	{
+		int Error(0);
+
+		for(std::size_t i = 0, n = sizeof(DataI32) / sizeof(type<int>); i < n; ++i)
+		{
+			bool Result = glm::isPowerOfTwo(DataI32[i].Value);
+			Error += DataI32[i].Return == Result ? 0 : 1;
+			assert(!Error);
+		}
+
+		return Error;
+	}
+}//isPowerOfTwo
 
 int main()
 {
 	int Error(0);
 
+	Error += isPowerOfTwo::test();
+
 	return Error;
 }