GLM 0.9.5.2

Libraries/glm-0.9.5.2/test/gtx/gtx_fast_square_root.cpp

@@ -0,0 +1,37 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2014 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2013-10-25
+// Updated : 2013-10-25
+// Licence : This source is under MIT licence
+// File    : test/gtx/fast_square_root.cpp
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#define GLM_FORCE_RADIANS
+#include <glm/gtx/fast_square_root.hpp>
+#include <glm/gtc/type_precision.hpp>
+#include <glm/gtc/epsilon.hpp>
+#include <glm/vector_relational.hpp>
+
+int test_fastInverseSqrt()
+{
+	int Error(0);
+
+	Error += glm::epsilonEqual(glm::fastInverseSqrt(1.0f), 1.0f, 0.01f) ? 0 : 1;
+	Error += glm::epsilonEqual(glm::fastInverseSqrt(1.0), 1.0, 0.01) ? 0 : 1;
+	Error += glm::all(glm::epsilonEqual(glm::fastInverseSqrt(glm::vec2(1.0f)), glm::vec2(1.0f), 0.01f)) ? 0 : 1;
+	Error += glm::all(glm::epsilonEqual(glm::fastInverseSqrt(glm::dvec3(1.0)), glm::dvec3(1.0), 0.01)) ? 0 : 1;
+	Error += glm::all(glm::epsilonEqual(glm::fastInverseSqrt(glm::dvec4(1.0)), glm::dvec4(1.0), 0.01)) ? 0 : 1;
+
+	
+	return 0;
+}
+
+int main()
+{
+	int Error(0);
+
+	Error += test_fastInverseSqrt();
+
+	return Error;
+}