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Name	Size	Permission	Date
backward	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
bits	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
debug	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
decimal	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
experimental	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
ext	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
parallel	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
pstl	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
tr1	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
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any	18.38 KB	-rw-r--r--	2025-12-18 20:59
array	15.21 KB	-rw-r--r--	2025-12-18 20:59
atomic	50.36 KB	-rw-r--r--	2025-12-18 20:59
barrier	7.89 KB	-rw-r--r--	2025-12-18 20:59
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cerrno	1.73 KB	-rw-r--r--	2025-12-18 20:59
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cfloat	1.84 KB	-rw-r--r--	2025-12-18 20:59
charconv	29.52 KB	-rw-r--r--	2025-12-18 20:59
chrono	94.76 KB	-rw-r--r--	2025-12-18 20:59
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compare	36.91 KB	-rw-r--r--	2025-12-18 20:59
complex	74.66 KB	-rw-r--r--	2025-12-18 20:59
complex.h	1.56 KB	-rw-r--r--	2025-12-18 20:59
concepts	12.51 KB	-rw-r--r--	2025-12-18 20:59
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cstring	3.08 KB	-rw-r--r--	2025-12-18 20:59
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ctime	2.24 KB	-rw-r--r--	2025-12-18 20:59
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cwchar	6.39 KB	-rw-r--r--	2025-12-18 20:59
cwctype	2.73 KB	-rw-r--r--	2025-12-18 20:59
cxxabi.h	21.76 KB	-rw-r--r--	2025-12-18 20:59
deque	4.39 KB	-rw-r--r--	2025-12-18 20:59
exception	5.28 KB	-rw-r--r--	2025-12-18 20:59
execution	1.83 KB	-rw-r--r--	2025-12-18 20:59
expected	49.72 KB	-rw-r--r--	2025-12-18 20:59
fenv.h	1.97 KB	-rw-r--r--	2025-12-18 20:59
filesystem	1.66 KB	-rw-r--r--	2025-12-18 20:59
format	113.64 KB	-rw-r--r--	2025-12-18 20:59
forward_list	2.65 KB	-rw-r--r--	2025-12-18 20:59
fstream	39.77 KB	-rw-r--r--	2025-12-18 20:59
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iostream	3 KB	-rw-r--r--	2025-12-18 20:59
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iterator	2.76 KB	-rw-r--r--	2025-12-18 20:59
latch	2.72 KB	-rw-r--r--	2025-12-18 20:59
limits	76.4 KB	-rw-r--r--	2025-12-18 20:59
list	3.6 KB	-rw-r--r--	2025-12-18 20:59
locale	1.5 KB	-rw-r--r--	2025-12-18 20:59
map	4.05 KB	-rw-r--r--	2025-12-18 20:59
math.h	4.47 KB	-rw-r--r--	2025-12-18 20:59
memory	4.82 KB	-rw-r--r--	2025-12-18 20:59
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numbers	6.87 KB	-rw-r--r--	2025-12-18 20:59
numeric	25.38 KB	-rw-r--r--	2025-12-18 20:59
optional	44.1 KB	-rw-r--r--	2025-12-18 20:59
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queue	2.46 KB	-rw-r--r--	2025-12-18 20:59
random	1.71 KB	-rw-r--r--	2025-12-18 20:59
ranges	253.81 KB	-rw-r--r--	2025-12-18 20:59
ratio	20.97 KB	-rw-r--r--	2025-12-18 20:59
regex	3.08 KB	-rw-r--r--	2025-12-18 20:59
scoped_allocator	17.33 KB	-rw-r--r--	2025-12-18 20:59
semaphore	2.98 KB	-rw-r--r--	2025-12-18 20:59
set	3.91 KB	-rw-r--r--	2025-12-18 20:59
shared_mutex	24.52 KB	-rw-r--r--	2025-12-18 20:59
source_location	2.68 KB	-rw-r--r--	2025-12-18 20:59
span	13.82 KB	-rw-r--r--	2025-12-18 20:59
spanstream	12.17 KB	-rw-r--r--	2025-12-18 20:59
sstream	38.83 KB	-rw-r--r--	2025-12-18 20:59
stack	2.38 KB	-rw-r--r--	2025-12-18 20:59
stacktrace	21.37 KB	-rw-r--r--	2025-12-18 20:59
stdatomic.h	3.97 KB	-rw-r--r--	2025-12-18 20:59
stdexcept	9.65 KB	-rw-r--r--	2025-12-18 20:59
stdfloat	1.72 KB	-rw-r--r--	2025-12-18 20:59
stdlib.h	2.25 KB	-rw-r--r--	2025-12-18 20:59
stop_token	15.7 KB	-rw-r--r--	2025-12-18 20:59
streambuf	29.24 KB	-rw-r--r--	2025-12-18 20:59
string	3.87 KB	-rw-r--r--	2025-12-18 20:59
string_view	27.33 KB	-rw-r--r--	2025-12-18 20:59
syncstream	8.17 KB	-rw-r--r--	2025-12-18 20:59
system_error	17.96 KB	-rw-r--r--	2025-12-18 20:59
tgmath.h	1.33 KB	-rw-r--r--	2025-12-18 20:59
thread	7.33 KB	-rw-r--r--	2025-12-18 20:59
tuple	76.49 KB	-rw-r--r--	2025-12-18 20:59
type_traits	112.36 KB	-rw-r--r--	2025-12-18 20:59
typeindex	3.43 KB	-rw-r--r--	2025-12-18 20:59
typeinfo	8.11 KB	-rw-r--r--	2025-12-18 20:59
unordered_map	3.37 KB	-rw-r--r--	2025-12-18 20:59
unordered_set	3.23 KB	-rw-r--r--	2025-12-18 20:59
utility	6.98 KB	-rw-r--r--	2025-12-18 20:59
valarray	40.2 KB	-rw-r--r--	2025-12-18 20:59
variant	64.72 KB	-rw-r--r--	2025-12-18 20:59
vector	4.72 KB	-rw-r--r--	2025-12-18 20:59
version	12.32 KB	-rw-r--r--	2025-12-18 20:59

Rename

// <numbers> -*- C++ -*-

// Copyright (C) 2019-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/** @file include/numbers
 *  This is a Standard C++ Library header.
 */

#ifndef _GLIBCXX_NUMBERS
#define _GLIBCXX_NUMBERS 1

#pragma GCC system_header

#if __cplusplus > 201703L

#include <type_traits>

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

/** @defgroup math_constants Mathematical constants
 *  @ingroup numerics
 *  @{
 */

/// Namespace for mathematical constants
namespace numbers
{
#define __cpp_lib_math_constants 201907L

/// @cond undocumented
  template<typename _Tp>
    using _Enable_if_floating = enable_if_t<is_floating_point_v<_Tp>, _Tp>;
  /// @endcond

/// e
  template<typename _Tp>
    inline constexpr _Tp e_v
      = _Enable_if_floating<_Tp>(2.718281828459045235360287471352662498L);

/// log_2 e
  template<typename _Tp>
    inline constexpr _Tp log2e_v
      = _Enable_if_floating<_Tp>(1.442695040888963407359924681001892137L);

/// log_10 e
  template<typename _Tp>
    inline constexpr _Tp log10e_v
      = _Enable_if_floating<_Tp>(0.434294481903251827651128918916605082L);

/// pi
  template<typename _Tp>
    inline constexpr _Tp pi_v
      = _Enable_if_floating<_Tp>(3.141592653589793238462643383279502884L);

/// 1/pi
  template<typename _Tp>
    inline constexpr _Tp inv_pi_v
      = _Enable_if_floating<_Tp>(0.318309886183790671537767526745028724L);

/// 1/sqrt(pi)
  template<typename _Tp>
    inline constexpr _Tp inv_sqrtpi_v
      = _Enable_if_floating<_Tp>(0.564189583547756286948079451560772586L);

/// log_e 2
  template<typename _Tp>
    inline constexpr _Tp ln2_v
      = _Enable_if_floating<_Tp>(0.693147180559945309417232121458176568L);

/// log_e 10
  template<typename _Tp>
    inline constexpr _Tp ln10_v
      = _Enable_if_floating<_Tp>(2.302585092994045684017991454684364208L);

/// sqrt(2)
  template<typename _Tp>
    inline constexpr _Tp sqrt2_v
      = _Enable_if_floating<_Tp>(1.414213562373095048801688724209698079L);

/// sqrt(3)
  template<typename _Tp>
    inline constexpr _Tp sqrt3_v
      = _Enable_if_floating<_Tp>(1.732050807568877293527446341505872367L);

/// 1/sqrt(3)
  template<typename _Tp>
    inline constexpr _Tp inv_sqrt3_v
      = _Enable_if_floating<_Tp>(0.577350269189625764509148780501957456L);

/// The Euler-Mascheroni constant
  template<typename _Tp>
    inline constexpr _Tp egamma_v
      = _Enable_if_floating<_Tp>(0.577215664901532860606512090082402431L);

/// The golden ratio, (1+sqrt(5))/2
  template<typename _Tp>
    inline constexpr _Tp phi_v
      = _Enable_if_floating<_Tp>(1.618033988749894848204586834365638118L);

inline constexpr double e = e_v<double>;
  inline constexpr double log2e = log2e_v<double>;
  inline constexpr double log10e = log10e_v<double>;
  inline constexpr double pi = pi_v<double>;
  inline constexpr double inv_pi = inv_pi_v<double>;
  inline constexpr double inv_sqrtpi = inv_sqrtpi_v<double>;
  inline constexpr double ln2 = ln2_v<double>;
  inline constexpr double ln10 = ln10_v<double>;
  inline constexpr double sqrt2 = sqrt2_v<double>;
  inline constexpr double sqrt3 = sqrt3_v<double>;
  inline constexpr double inv_sqrt3 = inv_sqrt3_v<double>;
  inline constexpr double egamma = egamma_v<double>;
  inline constexpr double phi = phi_v<double>;

#define __glibcxx_numbers(TYPE, SUFFIX) \
  /* e */						\
  template<>						\
    inline constexpr TYPE e_v<TYPE>			\
      = 2.718281828459045235360287471352662498##SUFFIX;	\
							\
  /* log_2 e */						\
  template<>						\
    inline constexpr TYPE log2e_v<TYPE>			\
      = 1.442695040888963407359924681001892137##SUFFIX;	\
							\
  /* log_10 e */					\
  template<>						\
    inline constexpr TYPE log10e_v<TYPE>		\
      = 0.434294481903251827651128918916605082##SUFFIX;	\
							\
  /* pi */						\
  template<>						\
    inline constexpr TYPE pi_v<TYPE>			\
      = 3.141592653589793238462643383279502884##SUFFIX;	\
							\
  /* 1/pi */						\
  template<>						\
    inline constexpr TYPE inv_pi_v<TYPE>		\
      = 0.318309886183790671537767526745028724##SUFFIX;	\
							\
  /* 1/sqrt(pi) */					\
  template<>						\
    inline constexpr TYPE inv_sqrtpi_v<TYPE>		\
      = 0.564189583547756286948079451560772586##SUFFIX;	\
							\
  /* log_e 2 */						\
  template<>						\
    inline constexpr TYPE ln2_v<TYPE>			\
      = 0.693147180559945309417232121458176568##SUFFIX;	\
							\
  /* log_e 10 */					\
  template<>						\
    inline constexpr TYPE ln10_v<TYPE>			\
      = 2.302585092994045684017991454684364208##SUFFIX;	\
							\
  /* sqrt(2) */						\
  template<>						\
    inline constexpr TYPE sqrt2_v<TYPE>			\
      = 1.414213562373095048801688724209698079##SUFFIX;	\
							\
  /* sqrt(3) */						\
  template<>						\
    inline constexpr TYPE sqrt3_v<TYPE>			\
      = 1.732050807568877293527446341505872367##SUFFIX;	\
							\
  /* 1/sqrt(3) */					\
  template<>						\
    inline constexpr TYPE inv_sqrt3_v<TYPE>		\
      = 0.577350269189625764509148780501957456##SUFFIX;	\
							\
  /* The Euler-Mascheroni constant */			\
  template<>						\
    inline constexpr TYPE egamma_v<TYPE>		\
      = 0.577215664901532860606512090082402431##SUFFIX;	\
							\
  /* The golden ratio, (1+sqrt(5))/2 */			\
  template<>						\
    inline constexpr TYPE phi_v<TYPE>			\
      = 1.618033988749894848204586834365638118##SUFFIX

#ifdef __STDCPP_FLOAT16_T__
__glibcxx_numbers (_Float16, F16);
#endif

#ifdef __STDCPP_FLOAT32_T__
__glibcxx_numbers (_Float32, F32);
#endif

#ifdef __STDCPP_FLOAT64_T__
__glibcxx_numbers (_Float64, F64);
#endif

#ifdef __STDCPP_FLOAT128_T__
__glibcxx_numbers (_Float128, F128);
#endif

#ifdef __STDCPP_BFLOAT128_T__
__glibcxx_numbers (__gnu_cxx::__bfloat16_t, BF16);
#endif

#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128) && !defined(__CUDACC__)
__glibcxx_numbers (__float128, Q);
#endif // USE_FLOAT128

#undef __glibcxx_numbers

} // namespace numbers
/// @}
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

#endif // C++20
#endif // _GLIBCXX_NUMBERS