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-// -*- 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_MATH_H
-# define _LIBCPP_MATH_H
-
-/*
- math.h 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
-
-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);
-
-floating_point hypot (arithmetic x, arithmetic y);
-float hypotf(float x, float y);
-long double hypotl(long double x, long double y);
-
-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);
-
-*/
-
-# if defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
-# include <__cxx03/math.h>
-# else
-# include <__config>
-
-# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-# pragma GCC system_header
-# endif
-
-# if __has_include_next(<math.h>)
-# include_next <math.h>
-# endif
-
-# ifdef __cplusplus
-
-// We support including .h headers inside 'extern "C"' contexts, so switch
-// back to C++ linkage before including these C++ headers.
-extern "C++" {
-
-# ifdef fpclassify
-# undef fpclassify
-# endif
-
-# ifdef signbit
-# undef signbit
-# endif
-
-# ifdef isfinite
-# undef isfinite
-# endif
-
-# ifdef isinf
-# undef isinf
-# endif
-
-# ifdef isnan
-# undef isnan
-# endif
-
-# ifdef isnormal
-# undef isnormal
-# endif
-
-# ifdef isgreater
-# undef isgreater
-# endif
-
-# ifdef isgreaterequal
-# undef isgreaterequal
-# endif
-
-# ifdef isless
-# undef isless
-# endif
-
-# ifdef islessequal
-# undef islessequal
-# endif
-
-# ifdef islessgreater
-# undef islessgreater
-# endif
-
-# ifdef isunordered
-# undef isunordered
-# endif
-
-# include <__math/abs.h>
-# include <__math/copysign.h>
-# include <__math/error_functions.h>
-# include <__math/exponential_functions.h>
-# include <__math/fdim.h>
-# include <__math/fma.h>
-# include <__math/gamma.h>
-# include <__math/hyperbolic_functions.h>
-# include <__math/hypot.h>
-# include <__math/inverse_hyperbolic_functions.h>
-# include <__math/inverse_trigonometric_functions.h>
-# include <__math/logarithms.h>
-# include <__math/min_max.h>
-# include <__math/modulo.h>
-# include <__math/remainder.h>
-# include <__math/roots.h>
-# include <__math/rounding_functions.h>
-# include <__math/traits.h>
-# include <__math/trigonometric_functions.h>
-# include <__type_traits/enable_if.h>
-# include <__type_traits/is_integral.h>
-
-// fpclassify relies on implementation-defined constants, so we can't move it to a detail header
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-namespace __math {
-
-// fpclassify
-
-// template on non-double overloads to make them weaker than same overloads from MSVC runtime
-template <class = int>
-[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI int fpclassify(float __x) _NOEXCEPT {
- return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, FP_ZERO, __x);
-}
-
-template <class = int>
-[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI int fpclassify(double __x) _NOEXCEPT {
- return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, FP_ZERO, __x);
-}
-
-template <class = int>
-[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI int fpclassify(long double __x) _NOEXCEPT {
- return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, FP_ZERO, __x);
-}
-
-template <class _A1, std::__enable_if_t<std::is_integral<_A1>::value, int> = 0>
-[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI int fpclassify(_A1 __x) _NOEXCEPT {
- return __x == 0 ? FP_ZERO : FP_NORMAL;
-}
-
-} // namespace __math
-
-_LIBCPP_END_NAMESPACE_STD
-
-using std::__math::fpclassify;
-using std::__math::signbit;
-
-// The MSVC runtime already provides these functions as templates
-# ifndef _LIBCPP_MSVCRT
-using std::__math::isfinite;
-using std::__math::isgreater;
-using std::__math::isgreaterequal;
-using std::__math::isinf;
-using std::__math::isless;
-using std::__math::islessequal;
-using std::__math::islessgreater;
-using std::__math::isnan;
-using std::__math::isnormal;
-using std::__math::isunordered;
-# endif // _LIBCPP_MSVCRT
-
-# if defined(_LIBCPP_MSVCRT) && _LIBCPP_STD_VER >= 20
-// MS UCRT incorrectly defines some functions in a way not working with integer types. Until C++20, this was worked
-// around by -fdelayed-template-parsing. Since C++20, we can use standard feature "requires" instead.
-
-// TODO: Remove the workaround once UCRT fixes these functions. Note that this doesn't seem planned as of 2025-07 per
-// https://developercommunity.visualstudio.com/t/10294165.
-
-using std::__math::__ucrt::isfinite;
-using std::__math::__ucrt::isgreater;
-using std::__math::__ucrt::isgreaterequal;
-using std::__math::__ucrt::isinf;
-using std::__math::__ucrt::isless;
-using std::__math::__ucrt::islessequal;
-using std::__math::__ucrt::islessgreater;
-using std::__math::__ucrt::isnan;
-using std::__math::__ucrt::isnormal;
-using std::__math::__ucrt::isunordered;
-# endif // defined(_LIBCPP_MSVCRT) && _LIBCPP_STD_VER >= 20
-
-// We have to provide double overloads for <math.h> to work on platforms that don't provide the full set of math
-// functions. To make the overload set work with multiple functions that take the same arguments, we make our overloads
-// templates. Functions are preferred over function templates during overload resolution, which means that our overload
-// will only be selected when the C library doesn't provide one.
-
-using std::__math::abs;
-using std::__math::acos;
-using std::__math::acosh;
-using std::__math::asin;
-using std::__math::asinh;
-using std::__math::atan;
-using std::__math::atan2;
-using std::__math::atanh;
-using std::__math::cbrt;
-using std::__math::ceil;
-using std::__math::copysign;
-using std::__math::cos;
-using std::__math::cosh;
-using std::__math::erf;
-using std::__math::erfc;
-using std::__math::exp;
-using std::__math::exp2;
-using std::__math::expm1;
-using std::__math::fabs;
-using std::__math::fdim;
-using std::__math::floor;
-using std::__math::fma;
-using std::__math::fmax;
-using std::__math::fmin;
-using std::__math::fmod;
-using std::__math::frexp;
-using std::__math::hypot;
-using std::__math::ilogb;
-using std::__math::ldexp;
-using std::__math::lgamma;
-using std::__math::llrint;
-using std::__math::llround;
-using std::__math::log;
-using std::__math::log10;
-using std::__math::log1p;
-using std::__math::log2;
-using std::__math::logb;
-using std::__math::lrint;
-using std::__math::lround;
-using std::__math::modf;
-using std::__math::nearbyint;
-using std::__math::nextafter;
-using std::__math::nexttoward;
-using std::__math::pow;
-using std::__math::remainder;
-using std::__math::remquo;
-using std::__math::rint;
-using std::__math::round;
-using std::__math::scalbln;
-using std::__math::scalbn;
-using std::__math::signbit;
-using std::__math::sin;
-using std::__math::sinh;
-using std::__math::sqrt;
-using std::__math::tan;
-using std::__math::tanh;
-using std::__math::tgamma;
-using std::__math::trunc;
-
-} // extern "C++"
-
-# endif // __cplusplus
-# endif // defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
-
-#else // _LIBCPP_MATH_H
-
-// This include lives outside the header guard in order to support an MSVC
-// extension which allows users to do:
-//
-// #define _USE_MATH_DEFINES
-// #include <math.h>
-//
-// and receive the definitions of mathematical constants, even if <math.h>
-// has previously been included.
-# if defined(_LIBCPP_MSVCRT) && defined(_USE_MATH_DEFINES)
-# include_next <math.h>
-# endif
-
-#endif // _LIBCPP_MATH_H
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