fraktal/include/glm/ext/scalar_relational.inl
2021-02-08 22:56:15 +01:00

44 lines
1.2 KiB
C++

#include "../common.hpp"
#include "../ext/scalar_int_sized.hpp"
#include "../ext/scalar_uint_sized.hpp"
#include "../detail/type_float.hpp"
namespace glm
{
template<typename genType>
GLM_FUNC_QUALIFIER GLM_CONSTEXPR bool equal(genType const& x, genType const& y, genType const& epsilon)
{
return abs(x - y) <= epsilon;
}
template<typename genType>
GLM_FUNC_QUALIFIER GLM_CONSTEXPR bool notEqual(genType const& x, genType const& y, genType const& epsilon)
{
return abs(x - y) > epsilon;
}
template<typename genType>
GLM_FUNC_QUALIFIER GLM_CONSTEXPR bool equal(genType const& x, genType const& y, int MaxULPs)
{
detail::float_t<genType> const a(x);
detail::float_t<genType> const b(y);
// Different signs means they do not match.
if(a.negative() != b.negative())
{
// Check for equality to make sure +0==-0
return a.mantissa() == b.mantissa() && a.exponent() == b.exponent();
}
// Find the difference in ULPs.
typename detail::float_t<genType>::int_type const DiffULPs = abs(a.i - b.i);
return DiffULPs <= MaxULPs;
}
template<typename genType>
GLM_FUNC_QUALIFIER GLM_CONSTEXPR bool notEqual(genType const& x, genType const& y, int ULPs)
{
return !equal(x, y, ULPs);
}
}//namespace glm