Added GTX_multiple tests

test/gtx/CMakeLists.txt

@@ -3,6 +3,7 @@ glmCreateTestGTC(gtx_gradient_paint)
 glmCreateTestGTC(gtx_integer)
 glmCreateTestGTC(gtx_matrix_interpolation)
 glmCreateTestGTC(gtx_matrix_query)
+glmCreateTestGTC(gtx_multiple)
 glmCreateTestGTC(gtx_quaternion)
 glmCreateTestGTC(gtx_rotate_vector)
 glmCreateTestGTC(gtx_simd_vec4)

test/gtx/gtx_multiple.cpp

@@ -0,0 +1,62 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2012 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2012-11-19
+// Updated : 2012-11-19
+// Licence : This source is under MIT licence
+// File    : test/gtx/gtx_multiple.cpp
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include <glm/glm.hpp>
+#include <glm/gtx/multiple.hpp>
+
+int test_higher()
+{
+	int Error(0);
+
+	int Higher0 = glm::higherMultiple(-5, 4);
+	Error += Higher0 == -4 ? 0 : 1;
+	Error += glm::higherMultiple(-4, 4) == -4 ? 0 : 1;
+	Error += glm::higherMultiple(-3, 4) == -4 ? 0 : 1;
+	Error += glm::higherMultiple(-2, 4) == -4 ? 0 : 1;
+	Error += glm::higherMultiple(-1, 4) == -4 ? 0 : 1;
+	Error += glm::higherMultiple(0, 4) == 0 ? 0 : 1;
+	Error += glm::higherMultiple(4, 4) == 4 ? 0 : 1;
+	Error += glm::higherMultiple(5, 4) == 8 ? 0 : 1;
+	Error += glm::higherMultiple(6, 4) == 8 ? 0 : 1;
+	Error += glm::higherMultiple(7, 4) == 8 ? 0 : 1;
+	Error += glm::higherMultiple(8, 4) == 8 ? 0 : 1;
+	Error += glm::higherMultiple(9, 4) == 12 ? 0 : 1;
+
+	return Error;
+}
+
+int test_Lower()
+{
+	int Error(0);
+
+	Error += glm::lowerMultiple(-5, 4) == -4 ? 0 : 1;
+	Error += glm::lowerMultiple(-4, 4) == -4 ? 0 : 1;
+	Error += glm::lowerMultiple(-3, 4) == 0 ? 0 : 1;
+	Error += glm::lowerMultiple(-2, 4) == 0 ? 0 : 1;
+	Error += glm::lowerMultiple(-1, 4) == 0 ? 0 : 1;
+	Error += glm::lowerMultiple(0, 4) == 0 ? 0 : 1;
+	Error += glm::lowerMultiple(4, 4) == 4 ? 0 : 1;
+	Error += glm::lowerMultiple(5, 4) == 4 ? 0 : 1;
+	Error += glm::lowerMultiple(6, 4) == 4 ? 0 : 1;
+	Error += glm::lowerMultiple(7, 4) == 4 ? 0 : 1;
+	Error += glm::lowerMultiple(8, 4) == 8 ? 0 : 1;
+	Error += glm::lowerMultiple(9, 4) == 8 ? 0 : 1;
+
+	return Error;
+}
+
+int main()
+{
+	int Error(0);
+
+	Error += test_higher();
+	Error += test_Lower();
+
+	return Error;
+}