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use std/glm's EPSILON instead of FLOAT_SMALL

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hyzboy
2024-08-24 00:20:24 +08:00
parent 58e495ddbb
commit d81d45486e
4 changed files with 58 additions and 48 deletions
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22
inc/hgl/math/MathConst.h
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@@ -2,24 +2,24 @@
#define HGL_MATH_CONST_INCLUDE
#include<hgl/type/DataType.h>
#include<limits>
namespace hgl
{
constexpr const float HGL_FLOAT_MIN =1.175494351e-38f; ///<最小浮点数
constexpr const float HGL_FLOAT_MAX =3.402823466e+38f; ///<最大浮点数
constexpr const float HGL_FLOAT_EPSILON =1.192092896e-07f; ///<浮点数精度
constexpr const float HGL_FLOAT_ZERO =0.000001f; ///<浮点数零值
constexpr const float HGL_FLOAT_SMALL =1.e-6f; ///<浮点数小值
constexpr const float HGL_FLOAT_EPSILON =std::numeric_limits<float>::epsilon(); ///<浮点数精度最小值
constexpr const double HGL_DOUBLE_EPSILON =std::numeric_limits<double>::epsilon(); ///<双精度浮点数精度最小值
template<typename T> bool IsNearlyZero(const T value)
{
return(abs(value)<=HGL_FLOAT_SMALL);
}
template<typename T> bool IsNearlyZero(const T value);
template<typename T> bool IsNearlyEqual(const T a,const T b)
{
return(abs(a-b)<=HGL_FLOAT_SMALL);
}
template<> inline bool IsNearlyZero<float>(const float value){return(fabsf(value) <= HGL_FLOAT_EPSILON);}
template<> inline bool IsNearlyZero<double>(const double value){return(fabs(value) <= HGL_DOUBLE_EPSILON);}
template<typename T> bool IsNearlyEqual(const T a,const T b);
template<> inline bool IsNearlyEqual<float>(const float a,const float b){return(fabsf(a - b) <= HGL_FLOAT_EPSILON);}
template<> inline bool IsNearlyEqual<double>(const double a,const double b){return(fabs(a - b) <= HGL_DOUBLE_EPSILON); }
constexpr const double HGL_E =2.7182818284590452353602874713526624977572470936999595749669676277240766303535475945713821785251664274; //欧拉数(自然对数的底数)
constexpr const double HGL_LOG2E =1.44269504088896340736;