45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
///////////////////////////////////////////////////////////////////////////////////////////////////
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// OpenGL Mathematics Copyright (c) 2005 - 2014 G-Truc Creation (www.g-truc.net)
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Created : 2011-01-15
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// Updated : 2011-09-13
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// Licence : This source is under MIT licence
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// File : test/core/func_exponential.cpp
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///////////////////////////////////////////////////////////////////////////////////////////////////
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#include <glm/common.hpp>
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#include <glm/exponential.hpp>
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#include <glm/gtc/ulp.hpp>
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namespace inversesqrt
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{
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int test()
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{
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int Error(0);
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glm::uint ulp(0);
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float diff(0.0f);
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for(float f = 0.001f; f < 10.f; f *= 1.001f)
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{
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glm::lowp_fvec1 lowp_v = glm::inversesqrt(glm::lowp_fvec1(f));
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float defaultp_v = glm::inversesqrt(f);
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ulp = glm::max(glm::float_distance(lowp_v.x, defaultp_v), ulp);
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diff = glm::abs(lowp_v.x - defaultp_v);
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}
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return Error;
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}
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}//namespace inversesqrt
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int main()
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{
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int Error(0);
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Error += inversesqrt::test();
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return Error;
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}
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