mewin/glm
1
0
Fork 0
Code Releases Activity

Added vector retionnal with max ULPs arguments and fixed double support

Browse Source
This commit is contained in:
Christophe Riccio
2018-09-17 19:06:02 +02:00
parent 311f59ed7e
commit b2a7f1093c
4 changed files with 56 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
glm/detail/qualifier.hpp
View File

@@ -206,18 +206,5 @@ namespace detail
return genType(1);
}
};
// https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
union float_t
{
GLM_CONSTEXPR float_t(float Num = 0.0f) : f(Num) {}
// Portable extraction of components.
GLM_CONSTEXPR bool negative() const { return i < 0; }
GLM_CONSTEXPR int mantissa() const { return i & ((1 << 23) - 1); }
GLM_CONSTEXPR int exponent() const { return (i >> 23) & 0xFF; }
int const i;
float const f;
};
}//namespace detail
}//namespace glm

48
glm/detail/type_float.hpp Normal file
View File

@@ -0,0 +1,48 @@
#pragma once
#include "setup.hpp"
namespace glm{
namespace detail
{
template <typename T>
union float_t
{};
// https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
template <>
union float_t<float>
{
typedef int int_type;
typedef float float_type;
GLM_CONSTEXPR float_t(float_type Num = 0.0f) : f(Num) {}
// Portable extraction of components.
GLM_CONSTEXPR bool negative() const { return i < 0; }
GLM_CONSTEXPR int_type mantissa() const { return i & ((1 << 23) - 1); }
GLM_CONSTEXPR int_type exponent() const { return (i >> 23) & ((1 << 8) - 1); }
int_type const i;
float_type const f;
};
template <>
union float_t<double>
{
typedef detail::int64 int_type;
typedef double float_type;
GLM_CONSTEXPR float_t(float_type Num = static_cast<float_type>(0)) : f(Num) {}
// Portable extraction of components.
GLM_CONSTEXPR bool negative() const { return i < 0; }
GLM_CONSTEXPR int_type mantissa() const { return i & ((int_type(1) << 52) - 1); }
GLM_CONSTEXPR int_type exponent() const { return (i >> 52) & ((int_type(1) << 11) - 1); }
int_type const i;
float_type const f;
};
}//namespace detail
}//namespace glm