1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 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_CHARCONV 11#define _LIBCPP_CHARCONV 12 13/* 14 charconv synopsis 15 16namespace std { 17 18 // floating-point format for primitive numerical conversion 19 enum class chars_format { 20 scientific = unspecified, 21 fixed = unspecified, 22 hex = unspecified, 23 general = fixed | scientific 24 }; 25 26 // 23.20.2, primitive numerical output conversion 27 struct to_chars_result { 28 char* ptr; 29 errc ec; 30 friend bool operator==(const to_chars_result&, const to_chars_result&) = default; // since C++20 31 constexpr explicit operator bool() const noexcept { return ec == errc{}; } // since C++26 32 }; 33 34 constexpr to_chars_result to_chars(char* first, char* last, see below value, 35 int base = 10); // constexpr since C++23 36 to_chars_result to_chars(char* first, char* last, bool value, 37 int base = 10) = delete; 38 39 to_chars_result to_chars(char* first, char* last, float value); 40 to_chars_result to_chars(char* first, char* last, double value); 41 to_chars_result to_chars(char* first, char* last, long double value); 42 43 to_chars_result to_chars(char* first, char* last, float value, 44 chars_format fmt); 45 to_chars_result to_chars(char* first, char* last, double value, 46 chars_format fmt); 47 to_chars_result to_chars(char* first, char* last, long double value, 48 chars_format fmt); 49 50 to_chars_result to_chars(char* first, char* last, float value, 51 chars_format fmt, int precision); 52 to_chars_result to_chars(char* first, char* last, double value, 53 chars_format fmt, int precision); 54 to_chars_result to_chars(char* first, char* last, long double value, 55 chars_format fmt, int precision); 56 57 // 23.20.3, primitive numerical input conversion 58 struct from_chars_result { 59 const char* ptr; 60 errc ec; 61 friend bool operator==(const from_chars_result&, const from_chars_result&) = default; // since C++20 62 constexpr explicit operator bool() const noexcept { return ec == errc{}; } // since C++26 63 }; 64 65 constexpr from_chars_result from_chars(const char* first, const char* last, 66 see below& value, int base = 10); // constexpr since C++23 67 68 from_chars_result from_chars(const char* first, const char* last, 69 float& value, chars_format fmt); 70 71 from_chars_result from_chars(const char* first, const char* last, 72 double& value, chars_format fmt); 73 74} // namespace std 75 76*/ 77 78#include <__config> 79 80#if _LIBCPP_STD_VER >= 17 81# include <__charconv/chars_format.h> 82# include <__charconv/from_chars_floating_point.h> 83# include <__charconv/from_chars_integral.h> 84# include <__charconv/from_chars_result.h> 85# include <__charconv/tables.h> 86# include <__charconv/to_chars.h> 87# include <__charconv/to_chars_base_10.h> 88# include <__charconv/to_chars_floating_point.h> 89# include <__charconv/to_chars_integral.h> 90# include <__charconv/to_chars_result.h> 91# include <__charconv/traits.h> 92#endif // _LIBCPP_STD_VER >= 17 93 94#include <version> 95 96#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 97# pragma GCC system_header 98#endif 99 100_LIBCPP_BEGIN_NAMESPACE_STD 101 102_LIBCPP_END_NAMESPACE_STD 103 104#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 105# include <cmath> 106# include <concepts> 107# include <cstddef> 108# include <cstdint> 109# include <cstdlib> 110# include <cstring> 111# include <iosfwd> 112# include <limits> 113# include <type_traits> 114#endif 115 116#endif // _LIBCPP_CHARCONV 117