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use FLOAT_ERROR instead of FLOAT_EPSILON

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hyzboy
2024-11-05 00:40:39 +08:00
parent 6d9bced95c
commit 2dfcdf0e41
3 changed files with 30 additions and 29 deletions
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14
inc/hgl/math/MathConst.h
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@@ -14,15 +14,15 @@ namespace hgl
constexpr const double HGL_DOUBLE_MAX =std::numeric_limits<double>::max(); ///<最大双精度浮点数
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);
constexpr const float HGL_HALF_FLOAT_ERROR=0.001f; ///<半精度浮点数最小误差值
constexpr const float HGL_FLOAT_ERROR =0.0001f; ///<浮点数最小误差值
constexpr const double HGL_DOUBLE_ERROR =0.00000001; ///<双精度浮点数最小误差值
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);}
inline bool IsNearlyZero(const float value,const float err=HGL_FLOAT_ERROR){return(fabsf(value) <= err);}
inline bool IsNearlyZero(const double value,const double err=HGL_DOUBLE_ERROR){return(fabs(value) <= err);}
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); }
inline bool IsNearlyEqual(const float a,const float b,const float err=HGL_FLOAT_ERROR){return(fabsf(a - b) <= err);}
inline bool IsNearlyEqual(const double a,const double b,const double err=HGL_DOUBLE_ERROR){return(fabs(a - b) <= err); }
constexpr const double HGL_E =2.7182818284590452353602874713526624977572470936999595749669676277240766303535475945713821785251664274; //欧拉数(自然对数的底数)
constexpr const double HGL_LOG2E =1.44269504088896340736;