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 /////////////////////////////////////////////////////////////////////////////////////////////////// // OpenGL Mathematics Copyright (c) 2005 - 2012 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 #include #include #include 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(); ResultDouble += glm::signedRand1(); } 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()); ResultDouble += glm::length(glm::normalizedRand2()); } 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()); ResultDoubleA += glm::length(glm::normalizedRand3()); 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; }