1// -*- C++ -*- 2//===---------------------------- numbers ---------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_NUMBERS 11#define _LIBCPP_NUMBERS 12 13/* 14 numbers synopsis 15 16namespace std::numbers { 17 template<class T> inline constexpr T e_v = unspecified; 18 template<class T> inline constexpr T log2e_v = unspecified; 19 template<class T> inline constexpr T log10e_v = unspecified; 20 template<class T> inline constexpr T pi_v = unspecified; 21 template<class T> inline constexpr T inv_pi_v = unspecified; 22 template<class T> inline constexpr T inv_sqrtpi_v = unspecified; 23 template<class T> inline constexpr T ln2_v = unspecified; 24 template<class T> inline constexpr T ln10_v = unspecified; 25 template<class T> inline constexpr T sqrt2_v = unspecified; 26 template<class T> inline constexpr T sqrt3_v = unspecified; 27 template<class T> inline constexpr T inv_sqrt3_v = unspecified; 28 template<class T> inline constexpr T egamma_v = unspecified; 29 template<class T> inline constexpr T phi_v = unspecified; 30 31 template<floating_point T> inline constexpr T e_v<T> = see below; 32 template<floating_point T> inline constexpr T log2e_v<T> = see below; 33 template<floating_point T> inline constexpr T log10e_v<T> = see below; 34 template<floating_point T> inline constexpr T pi_v<T> = see below; 35 template<floating_point T> inline constexpr T inv_pi_v<T> = see below; 36 template<floating_point T> inline constexpr T inv_sqrtpi_v<T> = see below; 37 template<floating_point T> inline constexpr T ln2_v<T> = see below; 38 template<floating_point T> inline constexpr T ln10_v<T> = see below; 39 template<floating_point T> inline constexpr T sqrt2_v<T> = see below; 40 template<floating_point T> inline constexpr T sqrt3_v<T> = see below; 41 template<floating_point T> inline constexpr T inv_sqrt3_v<T> = see below; 42 template<floating_point T> inline constexpr T egamma_v<T> = see below; 43 template<floating_point T> inline constexpr T phi_v<T> = see below; 44 45 inline constexpr double e = e_v<double>; 46 inline constexpr double log2e = log2e_v<double>; 47 inline constexpr double log10e = log10e_v<double>; 48 inline constexpr double pi = pi_v<double>; 49 inline constexpr double inv_pi = inv_pi_v<double>; 50 inline constexpr double inv_sqrtpi = inv_sqrtpi_v<double>; 51 inline constexpr double ln2 = ln2_v<double>; 52 inline constexpr double ln10 = ln10_v<double>; 53 inline constexpr double sqrt2 = sqrt2_v<double>; 54 inline constexpr double sqrt3 = sqrt3_v<double>; 55 inline constexpr double inv_sqrt3 = inv_sqrt3_v<double>; 56 inline constexpr double egamma = egamma_v<double>; 57 inline constexpr double phi = phi_v<double>; 58} 59*/ 60 61#include <__config> 62 63#if _LIBCPP_STD_VER > 17 && defined(__cpp_concepts) && __cpp_concepts >= 201811L 64 65#include <type_traits> 66#include <version> 67 68#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 69#pragma GCC system_header 70#endif 71 72_LIBCPP_PUSH_MACROS 73#include <__undef_macros> 74 75_LIBCPP_BEGIN_NAMESPACE_STD 76 77namespace numbers { 78 79template <class T> 80inline constexpr bool __false = false; 81 82template <class T> 83struct __illformed 84{ 85 static_assert(__false<T>, "A program that instantiates a primary template of a mathematical constant variable template is ill-formed."); 86}; 87 88template <class T> inline constexpr T e_v = __illformed<T>{}; 89template <class T> inline constexpr T log2e_v = __illformed<T>{}; 90template <class T> inline constexpr T log10e_v = __illformed<T>{}; 91template <class T> inline constexpr T pi_v = __illformed<T>{}; 92template <class T> inline constexpr T inv_pi_v = __illformed<T>{}; 93template <class T> inline constexpr T inv_sqrtpi_v = __illformed<T>{}; 94template <class T> inline constexpr T ln2_v = __illformed<T>{}; 95template <class T> inline constexpr T ln10_v = __illformed<T>{}; 96template <class T> inline constexpr T sqrt2_v = __illformed<T>{}; 97template <class T> inline constexpr T sqrt3_v = __illformed<T>{}; 98template <class T> inline constexpr T inv_sqrt3_v = __illformed<T>{}; 99template <class T> inline constexpr T egamma_v = __illformed<T>{}; 100template <class T> inline constexpr T phi_v = __illformed<T>{}; 101 102template <class T> 103concept __floating_point = is_floating_point_v<T>; 104 105template <__floating_point T> inline constexpr T e_v<T> = 2.718281828459045235360287471352662; 106template <__floating_point T> inline constexpr T log2e_v<T> = 1.442695040888963407359924681001892; 107template <__floating_point T> inline constexpr T log10e_v<T> = 0.434294481903251827651128918916605; 108template <__floating_point T> inline constexpr T pi_v<T> = 3.141592653589793238462643383279502; 109template <__floating_point T> inline constexpr T inv_pi_v<T> = 0.318309886183790671537767526745028; 110template <__floating_point T> inline constexpr T inv_sqrtpi_v<T> = 0.564189583547756286948079451560772; 111template <__floating_point T> inline constexpr T ln2_v<T> = 0.693147180559945309417232121458176; 112template <__floating_point T> inline constexpr T ln10_v<T> = 2.302585092994045684017991454684364; 113template <__floating_point T> inline constexpr T sqrt2_v<T> = 1.414213562373095048801688724209698; 114template <__floating_point T> inline constexpr T sqrt3_v<T> = 1.732050807568877293527446341505872; 115template <__floating_point T> inline constexpr T inv_sqrt3_v<T> = 0.577350269189625764509148780501957; 116template <__floating_point T> inline constexpr T egamma_v<T> = 0.577215664901532860606512090082402; 117template <__floating_point T> inline constexpr T phi_v<T> = 1.618033988749894848204586834365638; 118 119inline constexpr double e = e_v<double>; 120inline constexpr double log2e = log2e_v<double>; 121inline constexpr double log10e = log10e_v<double>; 122inline constexpr double pi = pi_v<double>; 123inline constexpr double inv_pi = inv_pi_v<double>; 124inline constexpr double inv_sqrtpi = inv_sqrtpi_v<double>; 125inline constexpr double ln2 = ln2_v<double>; 126inline constexpr double ln10 = ln10_v<double>; 127inline constexpr double sqrt2 = sqrt2_v<double>; 128inline constexpr double sqrt3 = sqrt3_v<double>; 129inline constexpr double inv_sqrt3 = inv_sqrt3_v<double>; 130inline constexpr double egamma = egamma_v<double>; 131inline constexpr double phi = phi_v<double>; 132 133} // namespace numbers 134 135_LIBCPP_END_NAMESPACE_STD 136 137_LIBCPP_POP_MACROS 138 139#endif //_LIBCPP_STD_VER > 17 && defined(__cpp_concepts) && __cpp_concepts >= 201811L 140 141#endif // _LIBCPP_NUMBERS 142