| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP_CMATH |
| #define _LIBCPP_CMATH |
| |
| /* |
| cmath synopsis |
| |
| Macros: |
| |
| HUGE_VAL |
| HUGE_VALF // C99 |
| HUGE_VALL // C99 |
| INFINITY // C99 |
| NAN // C99 |
| FP_INFINITE // C99 |
| FP_NAN // C99 |
| FP_NORMAL // C99 |
| FP_SUBNORMAL // C99 |
| FP_ZERO // C99 |
| FP_FAST_FMA // C99 |
| FP_FAST_FMAF // C99 |
| FP_FAST_FMAL // C99 |
| FP_ILOGB0 // C99 |
| FP_ILOGBNAN // C99 |
| MATH_ERRNO // C99 |
| MATH_ERREXCEPT // C99 |
| math_errhandling // C99 |
| |
| namespace std |
| { |
| |
| Types: |
| |
| float_t // C99 |
| double_t // C99 |
| |
| // C90 |
| |
| floating_point abs(floating_point x); |
| |
| floating_point acos (arithmetic x); |
| float acosf(float x); |
| long double acosl(long double x); |
| |
| floating_point asin (arithmetic x); |
| float asinf(float x); |
| long double asinl(long double x); |
| |
| floating_point atan (arithmetic x); |
| float atanf(float x); |
| long double atanl(long double x); |
| |
| floating_point atan2 (arithmetic y, arithmetic x); |
| float atan2f(float y, float x); |
| long double atan2l(long double y, long double x); |
| |
| floating_point ceil (arithmetic x); |
| float ceilf(float x); |
| long double ceill(long double x); |
| |
| floating_point cos (arithmetic x); |
| float cosf(float x); |
| long double cosl(long double x); |
| |
| floating_point cosh (arithmetic x); |
| float coshf(float x); |
| long double coshl(long double x); |
| |
| floating_point exp (arithmetic x); |
| float expf(float x); |
| long double expl(long double x); |
| |
| floating_point fabs (arithmetic x); |
| float fabsf(float x); |
| long double fabsl(long double x); |
| |
| floating_point floor (arithmetic x); |
| float floorf(float x); |
| long double floorl(long double x); |
| |
| floating_point fmod (arithmetic x, arithmetic y); |
| float fmodf(float x, float y); |
| long double fmodl(long double x, long double y); |
| |
| floating_point frexp (arithmetic value, int* exp); |
| float frexpf(float value, int* exp); |
| long double frexpl(long double value, int* exp); |
| |
| floating_point ldexp (arithmetic value, int exp); |
| float ldexpf(float value, int exp); |
| long double ldexpl(long double value, int exp); |
| |
| floating_point log (arithmetic x); |
| float logf(float x); |
| long double logl(long double x); |
| |
| floating_point log10 (arithmetic x); |
| float log10f(float x); |
| long double log10l(long double x); |
| |
| floating_point modf (floating_point value, floating_point* iptr); |
| float modff(float value, float* iptr); |
| long double modfl(long double value, long double* iptr); |
| |
| floating_point pow (arithmetic x, arithmetic y); |
| float powf(float x, float y); |
| long double powl(long double x, long double y); |
| |
| floating_point sin (arithmetic x); |
| float sinf(float x); |
| long double sinl(long double x); |
| |
| floating_point sinh (arithmetic x); |
| float sinhf(float x); |
| long double sinhl(long double x); |
| |
| floating_point sqrt (arithmetic x); |
| float sqrtf(float x); |
| long double sqrtl(long double x); |
| |
| floating_point tan (arithmetic x); |
| float tanf(float x); |
| long double tanl(long double x); |
| |
| floating_point tanh (arithmetic x); |
| float tanhf(float x); |
| long double tanhl(long double x); |
| |
| // C99 |
| |
| bool signbit(arithmetic x); |
| |
| int fpclassify(arithmetic x); |
| |
| bool isfinite(arithmetic x); |
| bool isinf(arithmetic x); |
| bool isnan(arithmetic x); |
| bool isnormal(arithmetic x); |
| |
| bool isgreater(arithmetic x, arithmetic y); |
| bool isgreaterequal(arithmetic x, arithmetic y); |
| bool isless(arithmetic x, arithmetic y); |
| bool islessequal(arithmetic x, arithmetic y); |
| bool islessgreater(arithmetic x, arithmetic y); |
| bool isunordered(arithmetic x, arithmetic y); |
| |
| floating_point acosh (arithmetic x); |
| float acoshf(float x); |
| long double acoshl(long double x); |
| |
| floating_point asinh (arithmetic x); |
| float asinhf(float x); |
| long double asinhl(long double x); |
| |
| floating_point atanh (arithmetic x); |
| float atanhf(float x); |
| long double atanhl(long double x); |
| |
| floating_point cbrt (arithmetic x); |
| float cbrtf(float x); |
| long double cbrtl(long double x); |
| |
| floating_point copysign (arithmetic x, arithmetic y); |
| float copysignf(float x, float y); |
| long double copysignl(long double x, long double y); |
| |
| floating_point erf (arithmetic x); |
| float erff(float x); |
| long double erfl(long double x); |
| |
| floating_point erfc (arithmetic x); |
| float erfcf(float x); |
| long double erfcl(long double x); |
| |
| floating_point exp2 (arithmetic x); |
| float exp2f(float x); |
| long double exp2l(long double x); |
| |
| floating_point expm1 (arithmetic x); |
| float expm1f(float x); |
| long double expm1l(long double x); |
| |
| floating_point fdim (arithmetic x, arithmetic y); |
| float fdimf(float x, float y); |
| long double fdiml(long double x, long double y); |
| |
| floating_point fma (arithmetic x, arithmetic y, arithmetic z); |
| float fmaf(float x, float y, float z); |
| long double fmal(long double x, long double y, long double z); |
| |
| floating_point fmax (arithmetic x, arithmetic y); |
| float fmaxf(float x, float y); |
| long double fmaxl(long double x, long double y); |
| |
| floating_point fmin (arithmetic x, arithmetic y); |
| float fminf(float x, float y); |
| long double fminl(long double x, long double y); |
| |
| double hermite(unsigned n, double x); // C++17 |
| float hermite(unsigned n, float x); // C++17 |
| long double hermite(unsigned n, long double x); // C++17 |
| float hermitef(unsigned n, float x); // C++17 |
| long double hermitel(unsigned n, long double x); // C++17 |
| template <class Integer> |
| double hermite(unsigned n, Integer x); // C++17 |
| |
| floating_point hypot (arithmetic x, arithmetic y); |
| float hypotf(float x, float y); |
| long double hypotl(long double x, long double y); |
| |
| double hypot(double x, double y, double z); // C++17 |
| float hypot(float x, float y, float z); // C++17 |
| long double hypot(long double x, long double y, long double z); // C++17 |
| |
| int ilogb (arithmetic x); |
| int ilogbf(float x); |
| int ilogbl(long double x); |
| |
| floating_point lgamma (arithmetic x); |
| float lgammaf(float x); |
| long double lgammal(long double x); |
| |
| long long llrint (arithmetic x); |
| long long llrintf(float x); |
| long long llrintl(long double x); |
| |
| long long llround (arithmetic x); |
| long long llroundf(float x); |
| long long llroundl(long double x); |
| |
| floating_point log1p (arithmetic x); |
| float log1pf(float x); |
| long double log1pl(long double x); |
| |
| floating_point log2 (arithmetic x); |
| float log2f(float x); |
| long double log2l(long double x); |
| |
| floating_point logb (arithmetic x); |
| float logbf(float x); |
| long double logbl(long double x); |
| |
| long lrint (arithmetic x); |
| long lrintf(float x); |
| long lrintl(long double x); |
| |
| long lround (arithmetic x); |
| long lroundf(float x); |
| long lroundl(long double x); |
| |
| double nan (const char* str); |
| float nanf(const char* str); |
| long double nanl(const char* str); |
| |
| floating_point nearbyint (arithmetic x); |
| float nearbyintf(float x); |
| long double nearbyintl(long double x); |
| |
| floating_point nextafter (arithmetic x, arithmetic y); |
| float nextafterf(float x, float y); |
| long double nextafterl(long double x, long double y); |
| |
| floating_point nexttoward (arithmetic x, long double y); |
| float nexttowardf(float x, long double y); |
| long double nexttowardl(long double x, long double y); |
| |
| floating_point remainder (arithmetic x, arithmetic y); |
| float remainderf(float x, float y); |
| long double remainderl(long double x, long double y); |
| |
| floating_point remquo (arithmetic x, arithmetic y, int* pquo); |
| float remquof(float x, float y, int* pquo); |
| long double remquol(long double x, long double y, int* pquo); |
| |
| floating_point rint (arithmetic x); |
| float rintf(float x); |
| long double rintl(long double x); |
| |
| floating_point round (arithmetic x); |
| float roundf(float x); |
| long double roundl(long double x); |
| |
| floating_point scalbln (arithmetic x, long ex); |
| float scalblnf(float x, long ex); |
| long double scalblnl(long double x, long ex); |
| |
| floating_point scalbn (arithmetic x, int ex); |
| float scalbnf(float x, int ex); |
| long double scalbnl(long double x, int ex); |
| |
| floating_point tgamma (arithmetic x); |
| float tgammaf(float x); |
| long double tgammal(long double x); |
| |
| floating_point trunc (arithmetic x); |
| float truncf(float x); |
| long double truncl(long double x); |
| |
| constexpr float lerp(float a, float b, float t) noexcept; // C++20 |
| constexpr double lerp(double a, double b, double t) noexcept; // C++20 |
| constexpr long double lerp(long double a, long double b, long double t) noexcept; // C++20 |
| |
| } // std |
| |
| */ |
| |
| #include <__config> |
| #include <__math/hypot.h> |
| #include <__type_traits/enable_if.h> |
| #include <__type_traits/is_arithmetic.h> |
| #include <__type_traits/is_constant_evaluated.h> |
| #include <__type_traits/is_floating_point.h> |
| #include <__type_traits/is_same.h> |
| #include <__type_traits/promote.h> |
| #include <__type_traits/remove_cv.h> |
| #include <limits> |
| #include <version> |
| |
| #include <__math/special_functions.h> |
| #include <math.h> |
| |
| #ifndef _LIBCPP_MATH_H |
| # error <cmath> tried including <math.h> but didn't find libc++'s <math.h> header. \ |
| This usually means that your header search paths are not configured properly. \ |
| The header search paths should contain the C++ Standard Library headers before \ |
| any C Standard Library, and you are probably using compiler flags that make that \ |
| not be the case. |
| #endif |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_PUSH_MACROS |
| #include <__undef_macros> |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| using ::signbit _LIBCPP_USING_IF_EXISTS; |
| using ::fpclassify _LIBCPP_USING_IF_EXISTS; |
| using ::isfinite _LIBCPP_USING_IF_EXISTS; |
| using ::isinf _LIBCPP_USING_IF_EXISTS; |
| using ::isnan _LIBCPP_USING_IF_EXISTS; |
| using ::isnormal _LIBCPP_USING_IF_EXISTS; |
| using ::isgreater _LIBCPP_USING_IF_EXISTS; |
| using ::isgreaterequal _LIBCPP_USING_IF_EXISTS; |
| using ::isless _LIBCPP_USING_IF_EXISTS; |
| using ::islessequal _LIBCPP_USING_IF_EXISTS; |
| using ::islessgreater _LIBCPP_USING_IF_EXISTS; |
| using ::isunordered _LIBCPP_USING_IF_EXISTS; |
| using ::isunordered _LIBCPP_USING_IF_EXISTS; |
| |
| using ::float_t _LIBCPP_USING_IF_EXISTS; |
| using ::double_t _LIBCPP_USING_IF_EXISTS; |
| |
| using ::abs _LIBCPP_USING_IF_EXISTS; |
| |
| using ::acos _LIBCPP_USING_IF_EXISTS; |
| using ::acosf _LIBCPP_USING_IF_EXISTS; |
| using ::asin _LIBCPP_USING_IF_EXISTS; |
| using ::asinf _LIBCPP_USING_IF_EXISTS; |
| using ::atan _LIBCPP_USING_IF_EXISTS; |
| using ::atanf _LIBCPP_USING_IF_EXISTS; |
| using ::atan2 _LIBCPP_USING_IF_EXISTS; |
| using ::atan2f _LIBCPP_USING_IF_EXISTS; |
| using ::ceil _LIBCPP_USING_IF_EXISTS; |
| using ::ceilf _LIBCPP_USING_IF_EXISTS; |
| using ::cos _LIBCPP_USING_IF_EXISTS; |
| using ::cosf _LIBCPP_USING_IF_EXISTS; |
| using ::cosh _LIBCPP_USING_IF_EXISTS; |
| using ::coshf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::exp _LIBCPP_USING_IF_EXISTS; |
| using ::expf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::fabs _LIBCPP_USING_IF_EXISTS; |
| using ::fabsf _LIBCPP_USING_IF_EXISTS; |
| using ::floor _LIBCPP_USING_IF_EXISTS; |
| using ::floorf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::fmod _LIBCPP_USING_IF_EXISTS; |
| using ::fmodf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::frexp _LIBCPP_USING_IF_EXISTS; |
| using ::frexpf _LIBCPP_USING_IF_EXISTS; |
| using ::ldexp _LIBCPP_USING_IF_EXISTS; |
| using ::ldexpf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::log _LIBCPP_USING_IF_EXISTS; |
| using ::logf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::log10 _LIBCPP_USING_IF_EXISTS; |
| using ::log10f _LIBCPP_USING_IF_EXISTS; |
| using ::modf _LIBCPP_USING_IF_EXISTS; |
| using ::modff _LIBCPP_USING_IF_EXISTS; |
| |
| using ::pow _LIBCPP_USING_IF_EXISTS; |
| using ::powf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::sin _LIBCPP_USING_IF_EXISTS; |
| using ::sinf _LIBCPP_USING_IF_EXISTS; |
| using ::sinh _LIBCPP_USING_IF_EXISTS; |
| using ::sinhf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::sqrt _LIBCPP_USING_IF_EXISTS; |
| using ::sqrtf _LIBCPP_USING_IF_EXISTS; |
| using ::tan _LIBCPP_USING_IF_EXISTS; |
| using ::tanf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::tanh _LIBCPP_USING_IF_EXISTS; |
| using ::tanhf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::acosh _LIBCPP_USING_IF_EXISTS; |
| using ::acoshf _LIBCPP_USING_IF_EXISTS; |
| using ::asinh _LIBCPP_USING_IF_EXISTS; |
| using ::asinhf _LIBCPP_USING_IF_EXISTS; |
| using ::atanh _LIBCPP_USING_IF_EXISTS; |
| using ::atanhf _LIBCPP_USING_IF_EXISTS; |
| using ::cbrt _LIBCPP_USING_IF_EXISTS; |
| using ::cbrtf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::copysign _LIBCPP_USING_IF_EXISTS; |
| using ::copysignf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::erf _LIBCPP_USING_IF_EXISTS; |
| using ::erff _LIBCPP_USING_IF_EXISTS; |
| using ::erfc _LIBCPP_USING_IF_EXISTS; |
| using ::erfcf _LIBCPP_USING_IF_EXISTS; |
| using ::exp2 _LIBCPP_USING_IF_EXISTS; |
| using ::exp2f _LIBCPP_USING_IF_EXISTS; |
| using ::expm1 _LIBCPP_USING_IF_EXISTS; |
| using ::expm1f _LIBCPP_USING_IF_EXISTS; |
| using ::fdim _LIBCPP_USING_IF_EXISTS; |
| using ::fdimf _LIBCPP_USING_IF_EXISTS; |
| using ::fmaf _LIBCPP_USING_IF_EXISTS; |
| using ::fma _LIBCPP_USING_IF_EXISTS; |
| using ::fmax _LIBCPP_USING_IF_EXISTS; |
| using ::fmaxf _LIBCPP_USING_IF_EXISTS; |
| using ::fmin _LIBCPP_USING_IF_EXISTS; |
| using ::fminf _LIBCPP_USING_IF_EXISTS; |
| using ::hypot _LIBCPP_USING_IF_EXISTS; |
| using ::hypotf _LIBCPP_USING_IF_EXISTS; |
| using ::ilogb _LIBCPP_USING_IF_EXISTS; |
| using ::ilogbf _LIBCPP_USING_IF_EXISTS; |
| using ::lgamma _LIBCPP_USING_IF_EXISTS; |
| using ::lgammaf _LIBCPP_USING_IF_EXISTS; |
| using ::llrint _LIBCPP_USING_IF_EXISTS; |
| using ::llrintf _LIBCPP_USING_IF_EXISTS; |
| using ::llround _LIBCPP_USING_IF_EXISTS; |
| using ::llroundf _LIBCPP_USING_IF_EXISTS; |
| using ::log1p _LIBCPP_USING_IF_EXISTS; |
| using ::log1pf _LIBCPP_USING_IF_EXISTS; |
| using ::log2 _LIBCPP_USING_IF_EXISTS; |
| using ::log2f _LIBCPP_USING_IF_EXISTS; |
| using ::logb _LIBCPP_USING_IF_EXISTS; |
| using ::logbf _LIBCPP_USING_IF_EXISTS; |
| using ::lrint _LIBCPP_USING_IF_EXISTS; |
| using ::lrintf _LIBCPP_USING_IF_EXISTS; |
| using ::lround _LIBCPP_USING_IF_EXISTS; |
| using ::lroundf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::nan _LIBCPP_USING_IF_EXISTS; |
| using ::nanf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::nearbyint _LIBCPP_USING_IF_EXISTS; |
| using ::nearbyintf _LIBCPP_USING_IF_EXISTS; |
| using ::nextafter _LIBCPP_USING_IF_EXISTS; |
| using ::nextafterf _LIBCPP_USING_IF_EXISTS; |
| using ::nexttoward _LIBCPP_USING_IF_EXISTS; |
| using ::nexttowardf _LIBCPP_USING_IF_EXISTS; |
| using ::remainder _LIBCPP_USING_IF_EXISTS; |
| using ::remainderf _LIBCPP_USING_IF_EXISTS; |
| using ::remquo _LIBCPP_USING_IF_EXISTS; |
| using ::remquof _LIBCPP_USING_IF_EXISTS; |
| using ::rint _LIBCPP_USING_IF_EXISTS; |
| using ::rintf _LIBCPP_USING_IF_EXISTS; |
| using ::round _LIBCPP_USING_IF_EXISTS; |
| using ::roundf _LIBCPP_USING_IF_EXISTS; |
| using ::scalbln _LIBCPP_USING_IF_EXISTS; |
| using ::scalblnf _LIBCPP_USING_IF_EXISTS; |
| using ::scalbn _LIBCPP_USING_IF_EXISTS; |
| using ::scalbnf _LIBCPP_USING_IF_EXISTS; |
| using ::tgamma _LIBCPP_USING_IF_EXISTS; |
| using ::tgammaf _LIBCPP_USING_IF_EXISTS; |
| using ::trunc _LIBCPP_USING_IF_EXISTS; |
| using ::truncf _LIBCPP_USING_IF_EXISTS; |
| |
| using ::acosl _LIBCPP_USING_IF_EXISTS; |
| using ::asinl _LIBCPP_USING_IF_EXISTS; |
| using ::atanl _LIBCPP_USING_IF_EXISTS; |
| using ::atan2l _LIBCPP_USING_IF_EXISTS; |
| using ::ceill _LIBCPP_USING_IF_EXISTS; |
| using ::cosl _LIBCPP_USING_IF_EXISTS; |
| using ::coshl _LIBCPP_USING_IF_EXISTS; |
| using ::expl _LIBCPP_USING_IF_EXISTS; |
| using ::fabsl _LIBCPP_USING_IF_EXISTS; |
| using ::floorl _LIBCPP_USING_IF_EXISTS; |
| using ::fmodl _LIBCPP_USING_IF_EXISTS; |
| using ::frexpl _LIBCPP_USING_IF_EXISTS; |
| using ::ldexpl _LIBCPP_USING_IF_EXISTS; |
| using ::logl _LIBCPP_USING_IF_EXISTS; |
| using ::log10l _LIBCPP_USING_IF_EXISTS; |
| using ::modfl _LIBCPP_USING_IF_EXISTS; |
| using ::powl _LIBCPP_USING_IF_EXISTS; |
| using ::sinl _LIBCPP_USING_IF_EXISTS; |
| using ::sinhl _LIBCPP_USING_IF_EXISTS; |
| using ::sqrtl _LIBCPP_USING_IF_EXISTS; |
| using ::tanl _LIBCPP_USING_IF_EXISTS; |
| |
| using ::tanhl _LIBCPP_USING_IF_EXISTS; |
| using ::acoshl _LIBCPP_USING_IF_EXISTS; |
| using ::asinhl _LIBCPP_USING_IF_EXISTS; |
| using ::atanhl _LIBCPP_USING_IF_EXISTS; |
| using ::cbrtl _LIBCPP_USING_IF_EXISTS; |
| |
| using ::copysignl _LIBCPP_USING_IF_EXISTS; |
| |
| using ::erfl _LIBCPP_USING_IF_EXISTS; |
| using ::erfcl _LIBCPP_USING_IF_EXISTS; |
| using ::exp2l _LIBCPP_USING_IF_EXISTS; |
| using ::expm1l _LIBCPP_USING_IF_EXISTS; |
| using ::fdiml _LIBCPP_USING_IF_EXISTS; |
| using ::fmal _LIBCPP_USING_IF_EXISTS; |
| using ::fmaxl _LIBCPP_USING_IF_EXISTS; |
| using ::fminl _LIBCPP_USING_IF_EXISTS; |
| using ::hypotl _LIBCPP_USING_IF_EXISTS; |
| using ::ilogbl _LIBCPP_USING_IF_EXISTS; |
| using ::lgammal _LIBCPP_USING_IF_EXISTS; |
| using ::llrintl _LIBCPP_USING_IF_EXISTS; |
| using ::llroundl _LIBCPP_USING_IF_EXISTS; |
| using ::log1pl _LIBCPP_USING_IF_EXISTS; |
| using ::log2l _LIBCPP_USING_IF_EXISTS; |
| using ::logbl _LIBCPP_USING_IF_EXISTS; |
| using ::lrintl _LIBCPP_USING_IF_EXISTS; |
| using ::lroundl _LIBCPP_USING_IF_EXISTS; |
| using ::nanl _LIBCPP_USING_IF_EXISTS; |
| using ::nearbyintl _LIBCPP_USING_IF_EXISTS; |
| using ::nextafterl _LIBCPP_USING_IF_EXISTS; |
| using ::nexttowardl _LIBCPP_USING_IF_EXISTS; |
| using ::remainderl _LIBCPP_USING_IF_EXISTS; |
| using ::remquol _LIBCPP_USING_IF_EXISTS; |
| using ::rintl _LIBCPP_USING_IF_EXISTS; |
| using ::roundl _LIBCPP_USING_IF_EXISTS; |
| using ::scalblnl _LIBCPP_USING_IF_EXISTS; |
| using ::scalbnl _LIBCPP_USING_IF_EXISTS; |
| using ::tgammal _LIBCPP_USING_IF_EXISTS; |
| using ::truncl _LIBCPP_USING_IF_EXISTS; |
| |
| template <class _A1, __enable_if_t<is_floating_point<_A1>::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool __constexpr_isinf(_A1 __lcpp_x) _NOEXCEPT { |
| #if __has_builtin(__builtin_isinf) |
| return __builtin_isinf(__lcpp_x); |
| #else |
| return isinf(__lcpp_x); |
| #endif |
| } |
| |
| template <class _A1, __enable_if_t<!is_floating_point<_A1>::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool __constexpr_isinf(_A1 __lcpp_x) _NOEXCEPT { |
| return std::isinf(__lcpp_x); |
| } |
| |
| #if _LIBCPP_STD_VER >= 20 |
| template <typename _Fp> |
| _LIBCPP_HIDE_FROM_ABI constexpr _Fp __lerp(_Fp __a, _Fp __b, _Fp __t) noexcept { |
| if ((__a <= 0 && __b >= 0) || (__a >= 0 && __b <= 0)) |
| return __t * __b + (1 - __t) * __a; |
| |
| if (__t == 1) |
| return __b; |
| const _Fp __x = __a + __t * (__b - __a); |
| if ((__t > 1) == (__b > __a)) |
| return __b < __x ? __x : __b; |
| else |
| return __x < __b ? __x : __b; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr float lerp(float __a, float __b, float __t) _NOEXCEPT { |
| return __lerp(__a, __b, __t); |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr double lerp(double __a, double __b, double __t) _NOEXCEPT { |
| return __lerp(__a, __b, __t); |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr long double lerp(long double __a, long double __b, long double __t) _NOEXCEPT { |
| return __lerp(__a, __b, __t); |
| } |
| |
| template <class _A1, class _A2, class _A3> |
| inline _LIBCPP_HIDE_FROM_ABI constexpr |
| typename enable_if_t< is_arithmetic<_A1>::value && is_arithmetic<_A2>::value && is_arithmetic<_A3>::value, |
| __promote<_A1, _A2, _A3> >::type |
| lerp(_A1 __a, _A2 __b, _A3 __t) noexcept { |
| typedef typename __promote<_A1, _A2, _A3>::type __result_type; |
| static_assert(!( |
| _IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value && _IsSame<_A3, __result_type>::value)); |
| return std::__lerp((__result_type)__a, (__result_type)__b, (__result_type)__t); |
| } |
| #endif // _LIBCPP_STD_VER >= 20 |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| _LIBCPP_POP_MACROS |
| |
| #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 |
| # include <type_traits> |
| #endif |
| |
| #endif // _LIBCPP_CMATH |
