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Added ULP comparison between lowp and highp for inversesqrt

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This commit is contained in:
Christophe Riccio 2013-12-28 03:45:18 +01:00
parent 775c6136fc
commit 71035db795
1 changed files with 28 additions and 2 deletions
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30
test/core/core_func_exponential.cpp
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@ -7,12 +7,38 @@
// File : test/core/func_exponential.cpp
///////////////////////////////////////////////////////////////////////////////////////////////////
#include <glm/common.hpp>
#include <glm/exponential.hpp>
#include <glm/gtc/ulp.hpp>
namespace inversesqrt
{
int test()
{
int Error(0);
glm::uint ulp(0);
float diff(0.0f);
for(float f = 0.001f; f < 10.f; f *= 1.001f)
{
glm::lowp_fvec1 lowp_v = glm::inversesqrt(glm::lowp_fvec1(f));
float defaultp_v = glm::inversesqrt(f);
ulp = glm::max(glm::float_distance(lowp_v.x, defaultp_v), ulp);
diff = glm::abs(lowp_v.x - defaultp_v);
}
return Error;
}
}//namespace inversesqrt
int main()
{
int Failed = 0;
int Error(0);
return Failed;
Error += inversesqrt::test();
return Error;
}