glm/test/gtc/gtc_epsilon.cpp

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///////////////////////////////////////////////////////////////////////////////////////////////////
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// OpenGL Mathematics Copyright (c) 2005 - 2013 G-Truc Creation (www.g-truc.net)
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///////////////////////////////////////////////////////////////////////////////////////////////////
// Created : 2012-09-19
// Updated : 2012-09-19
// Licence : This source is under MIT licence
// File : test/gtc/epsilon.cpp
///////////////////////////////////////////////////////////////////////////////////////////////////
#include <glm/gtc/epsilon.hpp>
#include <glm/gtc/constants.hpp>
#include <glm/vector_relational.hpp>
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int test_defined()
{
glm::epsilonEqual(glm::vec2(), glm::vec2(), glm::vec2());
glm::epsilonEqual(glm::vec3(), glm::vec3(), glm::vec3());
glm::epsilonEqual(glm::vec4(), glm::vec4(), glm::vec4());
glm::epsilonNotEqual(glm::vec2(), glm::vec2(), glm::vec2());
glm::epsilonNotEqual(glm::vec3(), glm::vec3(), glm::vec3());
glm::epsilonNotEqual(glm::vec4(), glm::vec4(), glm::vec4());
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glm::epsilonEqual(glm::vec2(), glm::vec2(), 0.0f);
glm::epsilonEqual(glm::vec3(), glm::vec3(), 0.0f);
glm::epsilonEqual(glm::vec4(), glm::vec4(), 0.0f);
glm::epsilonEqual(glm::quat(), glm::quat(), 0.0f);
glm::epsilonNotEqual(glm::vec2(), glm::vec2(), 0.0f);
glm::epsilonNotEqual(glm::vec3(), glm::vec3(), 0.0f);
glm::epsilonNotEqual(glm::vec4(), glm::vec4(), 0.0f);
glm::epsilonNotEqual(glm::quat(), glm::quat(), 0.0f);
return 0;
}
template <typename T>
int test_equal()
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{
int Error(0);
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{
T A = glm::epsilon<T>();
T B = glm::epsilon<T>();
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Error += glm::epsilonEqual(A, B, glm::epsilon<T>() * T(2)) ? 0 : 1;
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}
{
T A(0);
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T B = static_cast<T>(0) + glm::epsilon<T>();
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Error += glm::epsilonEqual(A, B, glm::epsilon<T>() * T(2)) ? 0 : 1;
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}
{
T A(0);
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T B = static_cast<T>(0) - glm::epsilon<T>();
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Error += glm::epsilonEqual(A, B, glm::epsilon<T>() * T(2)) ? 0 : 1;
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}
{
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T A = static_cast<T>(0) + glm::epsilon<T>();
T B = static_cast<T>(0);
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Error += glm::epsilonEqual(A, B, glm::epsilon<T>() * T(2)) ? 0 : 1;
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}
{
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T A = static_cast<T>(0) - glm::epsilon<T>();
T B = static_cast<T>(0);
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Error += glm::epsilonEqual(A, B, glm::epsilon<T>() * T(2)) ? 0 : 1;
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}
return Error;
}
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int main()
{
int Error(0);
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Error += test_defined();
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Error += test_equal<float>();
Error += test_equal<double>();
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return Error;
}