Created GTC_random

test/gtc/CMakeLists.txt

@@ -4,6 +4,7 @@ glmCreateTestGTC(gtc_matrix_integer)
 glmCreateTestGTC(gtc_matrix_inverse)
 glmCreateTestGTC(gtc_matrix_transform)
 glmCreateTestGTC(gtc_quaternion)
+glmCreateTestGTC(gtc_random)
 glmCreateTestGTC(gtc_swizzle)
 glmCreateTestGTC(gtc_type_precision)
 glmCreateTestGTC(gtc_type_ptr)

test/gtc/gtc_random.cpp

@@ -0,0 +1,99 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2011-05-31
+// Updated : 2011-05-31
+// Licence : This source is under MIT licence
+// File    : test/gtx/random.cpp
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include <glm/glm.hpp>
+#include <glm/gtx/random.hpp>
+#include <glm/gtx/epsilon.hpp>
+#include <iostream>
+
+int test_signedRand1()
+{
+	int Error = 0;
+
+	{
+		float ResultFloat = 0.0f;
+		double ResultDouble = 0.0f;
+		for(std::size_t i = 0; i < 100000; ++i)
+		{
+			ResultFloat += glm::signedRand1<float>();
+			ResultDouble += glm::signedRand1<double>();
+		}
+
+		Error += glm::equalEpsilon(ResultFloat, 0.0f, 0.0001f);
+		Error += glm::equalEpsilon(ResultDouble, 0.0, 0.0001);
+	}
+
+	return Error;
+}
+
+int test_normalizedRand2()
+{
+	int Error = 0;
+
+	{
+		std::size_t Max = 100000;
+		float ResultFloat = 0.0f;
+		double ResultDouble = 0.0f;
+		for(std::size_t i = 0; i < Max; ++i)
+		{
+			ResultFloat += glm::length(glm::normalizedRand2<float>());
+			ResultDouble += glm::length(glm::normalizedRand2<double>());
+		}
+
+		Error += glm::equalEpsilon(ResultFloat, float(Max), 0.000001f) ? 0 : 1;
+		Error += glm::equalEpsilon(ResultDouble, double(Max), 0.000001) ? 0 : 1;
+		assert(!Error);
+	}
+
+	return Error;
+}
+
+int test_normalizedRand3()
+{
+	int Error = 0;
+
+	{
+		std::size_t Max = 100000;
+		float ResultFloatA = 0.0f;
+		float ResultFloatB = 0.0f;
+		float ResultFloatC = 0.0f;
+		double ResultDoubleA = 0.0f;
+		double ResultDoubleB = 0.0f;
+		double ResultDoubleC = 0.0f;
+		for(std::size_t i = 0; i < Max; ++i)
+		{
+			ResultFloatA += glm::length(glm::normalizedRand3<float>());
+			ResultDoubleA += glm::length(glm::normalizedRand3<double>());
+			ResultFloatB += glm::length(glm::normalizedRand3(2.0f, 2.0f));
+			ResultDoubleB += glm::length(glm::normalizedRand3(2.0, 2.0));
+			ResultFloatC += glm::length(glm::normalizedRand3(1.0f, 3.0f));
+			ResultDoubleC += glm::length(glm::normalizedRand3(1.0, 3.0));
+		}
+
+		Error += glm::equalEpsilon(ResultFloatA, float(Max), 0.0001f) ? 0 : 1;
+		Error += glm::equalEpsilon(ResultDoubleA, double(Max), 0.0001) ? 0 : 1;
+		Error += glm::equalEpsilon(ResultFloatB, float(Max * 2), 0.0001f) ? 0 : 1;
+		Error += glm::equalEpsilon(ResultDoubleB, double(Max * 2), 0.0001) ? 0 : 1;
+		Error += (ResultFloatC >= float(Max) && ResultFloatC <= float(Max * 3)) ? 0 : 1;
+		Error += (ResultDoubleC >= double(Max) && ResultDoubleC <= double(Max * 3)) ? 0 : 1;
+	}
+
+	return Error;
+}
+
+int main()
+{
+	int Error = 0;
+
+	Error += test_signedRand1();
+	Error += test_normalizedRand2();
+	Error += test_normalizedRand3();
+
+	return Error;
+}