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Upgrade to 2022-era LLVM LIBCXX

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Justine Tunney 2024-05-27 02:12:27 -07:00
parent 2f4ca71f26
commit 8e68384e15
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GPG key ID: BE714B4575D6E328
2078 changed files with 165657 additions and 65010 deletions
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64
third_party/libcxx/__charconv/chars_format.h vendored Normal file
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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___CHARCONV_CHARS_FORMAT_H
#define _LIBCPP___CHARCONV_CHARS_FORMAT_H
#include <__config>
#include <__utility/to_underlying.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
enum class _LIBCPP_ENUM_VIS chars_format { scientific = 0x1, fixed = 0x2, hex = 0x4, general = fixed | scientific };
inline _LIBCPP_HIDE_FROM_ABI constexpr chars_format operator~(chars_format __x) {
return chars_format(~std::__to_underlying(__x));
}
inline _LIBCPP_HIDE_FROM_ABI constexpr chars_format operator&(chars_format __x, chars_format __y) {
return chars_format(std::__to_underlying(__x) & std::__to_underlying(__y));
}
inline _LIBCPP_HIDE_FROM_ABI constexpr chars_format operator|(chars_format __x, chars_format __y) {
return chars_format(std::__to_underlying(__x) | std::__to_underlying(__y));
}
inline _LIBCPP_HIDE_FROM_ABI constexpr chars_format operator^(chars_format __x, chars_format __y) {
return chars_format(std::__to_underlying(__x) ^ std::__to_underlying(__y));
}
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 chars_format&
operator&=(chars_format& __x, chars_format __y) {
__x = __x & __y;
return __x;
}
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 chars_format&
operator|=(chars_format& __x, chars_format __y) {
__x = __x | __y;
return __x;
}
inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 chars_format&
operator^=(chars_format& __x, chars_format __y) {
__x = __x ^ __y;
return __x;
}
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___CHARCONV_CHARS_FORMAT_H

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third_party/libcxx/__charconv/from_chars_integral.h vendored Normal file
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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___CHARCONV_FROM_CHARS_INTEGRAL_H
#define _LIBCPP___CHARCONV_FROM_CHARS_INTEGRAL_H
#include <__algorithm/copy_n.h>
#include <__charconv/from_chars_result.h>
#include <__charconv/traits.h>
#include <__config>
#include <__memory/addressof.h>
#include <__system_error/errc.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/integral_constant.h>
#include <__type_traits/is_integral.h>
#include <__type_traits/is_unsigned.h>
#include <__type_traits/make_unsigned.h>
#include <limits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
from_chars_result from_chars(const char*, const char*, bool, int = 10) = delete;
template <typename _It, typename _Tp, typename _Fn, typename... _Ts>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result
__sign_combinator(_It __first, _It __last, _Tp& __value, _Fn __f, _Ts... __args) {
using __tl = numeric_limits<_Tp>;
decltype(std::__to_unsigned_like(__value)) __x;
bool __neg = (__first != __last && *__first == '-');
auto __r = __f(__neg ? __first + 1 : __first, __last, __x, __args...);
switch (__r.ec) {
case errc::invalid_argument:
return {__first, __r.ec};
case errc::result_out_of_range:
return __r;
default:
break;
}
if (__neg) {
if (__x <= std::__complement(std::__to_unsigned_like(__tl::min()))) {
__x = std::__complement(__x);
std::copy_n(std::addressof(__x), 1, std::addressof(__value));
return __r;
}
} else {
if (__x <= std::__to_unsigned_like(__tl::max())) {
__value = __x;
return __r;
}
}
return {__r.ptr, errc::result_out_of_range};
}
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool __in_pattern(_Tp __c) {
return '0' <= __c && __c <= '9';
}
struct _LIBCPP_HIDDEN __in_pattern_result {
bool __ok;
int __val;
explicit _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI operator bool() const { return __ok; }
};
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI __in_pattern_result __in_pattern(_Tp __c, int __base) {
if (__base <= 10)
return {'0' <= __c && __c < '0' + __base, __c - '0'};
else if (std::__in_pattern(__c))
return {true, __c - '0'};
else if ('a' <= __c && __c < 'a' + __base - 10)
return {true, __c - 'a' + 10};
else
return {'A' <= __c && __c < 'A' + __base - 10, __c - 'A' + 10};
}
template <typename _It, typename _Tp, typename _Fn, typename... _Ts>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result
__subject_seq_combinator(_It __first, _It __last, _Tp& __value, _Fn __f, _Ts... __args) {
auto __find_non_zero = [](_It __firstit, _It __lastit) {
for (; __firstit != __lastit; ++__firstit)
if (*__firstit != '0')
break;
return __firstit;
};
auto __p = __find_non_zero(__first, __last);
if (__p == __last || !std::__in_pattern(*__p, __args...)) {
if (__p == __first)
return {__first, errc::invalid_argument};
else {
__value = 0;
return {__p, {}};
}
}
auto __r = __f(__p, __last, __value, __args...);
if (__r.ec == errc::result_out_of_range) {
for (; __r.ptr != __last; ++__r.ptr) {
if (!std::__in_pattern(*__r.ptr, __args...))
break;
}
}
return __r;
}
template <typename _Tp, typename enable_if<is_unsigned<_Tp>::value, int>::type = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result
__from_chars_atoi(const char* __first, const char* __last, _Tp& __value) {
using __tx = __itoa::__traits<_Tp>;
using __output_type = typename __tx::type;
return std::__subject_seq_combinator(
__first, __last, __value, [](const char* __f, const char* __l, _Tp& __val) -> from_chars_result {
__output_type __a, __b;
auto __p = __tx::__read(__f, __l, __a, __b);
if (__p == __l || !std::__in_pattern(*__p)) {
__output_type __m = numeric_limits<_Tp>::max();
if (__m >= __a && __m - __a >= __b) {
__val = __a + __b;
return {__p, {}};
}
}
return {__p, errc::result_out_of_range};
});
}
template <typename _Tp, typename enable_if<is_signed<_Tp>::value, int>::type = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result
__from_chars_atoi(const char* __first, const char* __last, _Tp& __value) {
using __t = decltype(std::__to_unsigned_like(__value));
return std::__sign_combinator(__first, __last, __value, __from_chars_atoi<__t>);
}
/*
// Code used to generate __from_chars_log2f_lut.
#include <cmath>
#include <format>
#include <iostream>
int main() {
for (int i = 2; i <= 36; ++i)
std::cout << std::format("{},\n", log2f(i));
}
*/
/// log2f table for bases [2, 36].
inline constexpr float __from_chars_log2f_lut[35] = {
1, 1.5849625, 2, 2.321928, 2.5849626, 2.807355, 3, 3.169925, 3.321928,
3.4594316, 3.5849626, 3.7004397, 3.807355, 3.9068906, 4, 4.087463, 4.169925, 4.2479277,
4.321928, 4.3923173, 4.4594316, 4.523562, 4.5849624, 4.643856, 4.70044, 4.7548876, 4.807355,
4.857981, 4.9068904, 4.9541965, 5, 5.044394, 5.087463, 5.129283, 5.169925};
template <typename _Tp, typename enable_if<is_unsigned<_Tp>::value, int>::type = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result
__from_chars_integral(const char* __first, const char* __last, _Tp& __value, int __base) {
if (__base == 10)
return std::__from_chars_atoi(__first, __last, __value);
return std::__subject_seq_combinator(
__first,
__last,
__value,
[](const char* __p, const char* __lastp, _Tp& __val, int __b) -> from_chars_result {
using __tl = numeric_limits<_Tp>;
// __base is always between 2 and 36 inclusive.
auto __digits = __tl::digits / __from_chars_log2f_lut[__b - 2];
_Tp __x = __in_pattern(*__p++, __b).__val, __y = 0;
for (int __i = 1; __p != __lastp; ++__i, ++__p) {
if (auto __c = __in_pattern(*__p, __b)) {
if (__i < __digits - 1)
__x = __x * __b + __c.__val;
else {
if (!__itoa::__mul_overflowed(__x, __b, __x))
++__p;
__y = __c.__val;
break;
}
} else
break;
}
if (__p == __lastp || !__in_pattern(*__p, __b)) {
if (__tl::max() - __x >= __y) {
__val = __x + __y;
return {__p, {}};
}
}
return {__p, errc::result_out_of_range};
},
__base);
}
template <typename _Tp, typename enable_if<is_signed<_Tp>::value, int>::type = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result
__from_chars_integral(const char* __first, const char* __last, _Tp& __value, int __base) {
using __t = decltype(std::__to_unsigned_like(__value));
return std::__sign_combinator(__first, __last, __value, __from_chars_integral<__t>, __base);
}
template <typename _Tp, typename enable_if<is_integral<_Tp>::value, int>::type = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result
from_chars(const char* __first, const char* __last, _Tp& __value) {
return std::__from_chars_atoi(__first, __last, __value);
}
template <typename _Tp, typename enable_if<is_integral<_Tp>::value, int>::type = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI from_chars_result
from_chars(const char* __first, const char* __last, _Tp& __value, int __base) {
_LIBCPP_ASSERT(2 <= __base && __base <= 36, "base not in [2, 36]");
return std::__from_chars_integral(__first, __last, __value, __base);
}
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___CHARCONV_FROM_CHARS_INTEGRAL_H

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third_party/libcxx/__charconv/from_chars_result.h vendored Normal file
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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___CHARCONV_FROM_CHARS_RESULT_H
#define _LIBCPP___CHARCONV_FROM_CHARS_RESULT_H
#include <__config>
#include <__system_error/errc.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
struct _LIBCPP_TYPE_VIS from_chars_result {
const char* ptr;
errc ec;
# if _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI friend bool operator==(const from_chars_result&, const from_chars_result&) = default;
# endif
};
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___CHARCONV_FROM_CHARS_RESULT_H

163
third_party/libcxx/__charconv/tables.h vendored Normal file
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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___CHARCONV_TABLES
#define _LIBCPP___CHARCONV_TABLES
#include <__config>
#include <cstdint>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
namespace __itoa {
inline constexpr char __base_2_lut[64] = {
'0', '0', '0', '0', '0', '0', '0', '1', '0', '0', '1', '0', '0', '0', '1', '1', '0', '1', '0', '0', '0', '1',
'0', '1', '0', '1', '1', '0', '0', '1', '1', '1', '1', '0', '0', '0', '1', '0', '0', '1', '1', '0', '1', '0',
'1', '0', '1', '1', '1', '1', '0', '0', '1', '1', '0', '1', '1', '1', '1', '0', '1', '1', '1', '1'};
inline constexpr char __base_8_lut[128] = {
'0', '0', '0', '1', '0', '2', '0', '3', '0', '4', '0', '5', '0', '6', '0', '7', '1', '0', '1', '1', '1', '2',
'1', '3', '1', '4', '1', '5', '1', '6', '1', '7', '2', '0', '2', '1', '2', '2', '2', '3', '2', '4', '2', '5',
'2', '6', '2', '7', '3', '0', '3', '1', '3', '2', '3', '3', '3', '4', '3', '5', '3', '6', '3', '7', '4', '0',
'4', '1', '4', '2', '4', '3', '4', '4', '4', '5', '4', '6', '4', '7', '5', '0', '5', '1', '5', '2', '5', '3',
'5', '4', '5', '5', '5', '6', '5', '7', '6', '0', '6', '1', '6', '2', '6', '3', '6', '4', '6', '5', '6', '6',
'6', '7', '7', '0', '7', '1', '7', '2', '7', '3', '7', '4', '7', '5', '7', '6', '7', '7'};
inline constexpr char __base_16_lut[512] = {
'0', '0', '0', '1', '0', '2', '0', '3', '0', '4', '0', '5', '0', '6', '0', '7', '0', '8', '0', '9', '0', 'a', '0',
'b', '0', 'c', '0', 'd', '0', 'e', '0', 'f', '1', '0', '1', '1', '1', '2', '1', '3', '1', '4', '1', '5', '1', '6',
'1', '7', '1', '8', '1', '9', '1', 'a', '1', 'b', '1', 'c', '1', 'd', '1', 'e', '1', 'f', '2', '0', '2', '1', '2',
'2', '2', '3', '2', '4', '2', '5', '2', '6', '2', '7', '2', '8', '2', '9', '2', 'a', '2', 'b', '2', 'c', '2', 'd',
'2', 'e', '2', 'f', '3', '0', '3', '1', '3', '2', '3', '3', '3', '4', '3', '5', '3', '6', '3', '7', '3', '8', '3',
'9', '3', 'a', '3', 'b', '3', 'c', '3', 'd', '3', 'e', '3', 'f', '4', '0', '4', '1', '4', '2', '4', '3', '4', '4',
'4', '5', '4', '6', '4', '7', '4', '8', '4', '9', '4', 'a', '4', 'b', '4', 'c', '4', 'd', '4', 'e', '4', 'f', '5',
'0', '5', '1', '5', '2', '5', '3', '5', '4', '5', '5', '5', '6', '5', '7', '5', '8', '5', '9', '5', 'a', '5', 'b',
'5', 'c', '5', 'd', '5', 'e', '5', 'f', '6', '0', '6', '1', '6', '2', '6', '3', '6', '4', '6', '5', '6', '6', '6',
'7', '6', '8', '6', '9', '6', 'a', '6', 'b', '6', 'c', '6', 'd', '6', 'e', '6', 'f', '7', '0', '7', '1', '7', '2',
'7', '3', '7', '4', '7', '5', '7', '6', '7', '7', '7', '8', '7', '9', '7', 'a', '7', 'b', '7', 'c', '7', 'd', '7',
'e', '7', 'f', '8', '0', '8', '1', '8', '2', '8', '3', '8', '4', '8', '5', '8', '6', '8', '7', '8', '8', '8', '9',
'8', 'a', '8', 'b', '8', 'c', '8', 'd', '8', 'e', '8', 'f', '9', '0', '9', '1', '9', '2', '9', '3', '9', '4', '9',
'5', '9', '6', '9', '7', '9', '8', '9', '9', '9', 'a', '9', 'b', '9', 'c', '9', 'd', '9', 'e', '9', 'f', 'a', '0',
'a', '1', 'a', '2', 'a', '3', 'a', '4', 'a', '5', 'a', '6', 'a', '7', 'a', '8', 'a', '9', 'a', 'a', 'a', 'b', 'a',
'c', 'a', 'd', 'a', 'e', 'a', 'f', 'b', '0', 'b', '1', 'b', '2', 'b', '3', 'b', '4', 'b', '5', 'b', '6', 'b', '7',
'b', '8', 'b', '9', 'b', 'a', 'b', 'b', 'b', 'c', 'b', 'd', 'b', 'e', 'b', 'f', 'c', '0', 'c', '1', 'c', '2', 'c',
'3', 'c', '4', 'c', '5', 'c', '6', 'c', '7', 'c', '8', 'c', '9', 'c', 'a', 'c', 'b', 'c', 'c', 'c', 'd', 'c', 'e',
'c', 'f', 'd', '0', 'd', '1', 'd', '2', 'd', '3', 'd', '4', 'd', '5', 'd', '6', 'd', '7', 'd', '8', 'd', '9', 'd',
'a', 'd', 'b', 'd', 'c', 'd', 'd', 'd', 'e', 'd', 'f', 'e', '0', 'e', '1', 'e', '2', 'e', '3', 'e', '4', 'e', '5',
'e', '6', 'e', '7', 'e', '8', 'e', '9', 'e', 'a', 'e', 'b', 'e', 'c', 'e', 'd', 'e', 'e', 'e', 'f', 'f', '0', 'f',
'1', 'f', '2', 'f', '3', 'f', '4', 'f', '5', 'f', '6', 'f', '7', 'f', '8', 'f', '9', 'f', 'a', 'f', 'b', 'f', 'c',
'f', 'd', 'f', 'e', 'f', 'f'};
inline constexpr uint32_t __pow10_32[10] = {
UINT32_C(0),
UINT32_C(10),
UINT32_C(100),
UINT32_C(1000),
UINT32_C(10000),
UINT32_C(100000),
UINT32_C(1000000),
UINT32_C(10000000),
UINT32_C(100000000),
UINT32_C(1000000000)};
inline constexpr uint64_t __pow10_64[20] = {
UINT64_C(0),
UINT64_C(10),
UINT64_C(100),
UINT64_C(1000),
UINT64_C(10000),
UINT64_C(100000),
UINT64_C(1000000),
UINT64_C(10000000),
UINT64_C(100000000),
UINT64_C(1000000000),
UINT64_C(10000000000),
UINT64_C(100000000000),
UINT64_C(1000000000000),
UINT64_C(10000000000000),
UINT64_C(100000000000000),
UINT64_C(1000000000000000),
UINT64_C(10000000000000000),
UINT64_C(100000000000000000),
UINT64_C(1000000000000000000),
UINT64_C(10000000000000000000)};
# ifndef _LIBCPP_HAS_NO_INT128
inline constexpr int __pow10_128_offset = 0;
inline constexpr __uint128_t __pow10_128[40] = {
UINT64_C(0),
UINT64_C(10),
UINT64_C(100),
UINT64_C(1000),
UINT64_C(10000),
UINT64_C(100000),
UINT64_C(1000000),
UINT64_C(10000000),
UINT64_C(100000000),
UINT64_C(1000000000),
UINT64_C(10000000000),
UINT64_C(100000000000),
UINT64_C(1000000000000),
UINT64_C(10000000000000),
UINT64_C(100000000000000),
UINT64_C(1000000000000000),
UINT64_C(10000000000000000),
UINT64_C(100000000000000000),
UINT64_C(1000000000000000000),
UINT64_C(10000000000000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(100000000000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(1000000000000000000),
__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000000000000),
(__uint128_t(UINT64_C(10000000000000000000)) * UINT64_C(10000000000000000000)) * 10};
# endif
inline constexpr char __digits_base_10[200] = {
// clang-format off
'0', '0', '0', '1', '0', '2', '0', '3', '0', '4', '0', '5', '0', '6', '0', '7', '0', '8', '0', '9',
'1', '0', '1', '1', '1', '2', '1', '3', '1', '4', '1', '5', '1', '6', '1', '7', '1', '8', '1', '9',
'2', '0', '2', '1', '2', '2', '2', '3', '2', '4', '2', '5', '2', '6', '2', '7', '2', '8', '2', '9',
'3', '0', '3', '1', '3', '2', '3', '3', '3', '4', '3', '5', '3', '6', '3', '7', '3', '8', '3', '9',
'4', '0', '4', '1', '4', '2', '4', '3', '4', '4', '4', '5', '4', '6', '4', '7', '4', '8', '4', '9',
'5', '0', '5', '1', '5', '2', '5', '3', '5', '4', '5', '5', '5', '6', '5', '7', '5', '8', '5', '9',
'6', '0', '6', '1', '6', '2', '6', '3', '6', '4', '6', '5', '6', '6', '6', '7', '6', '8', '6', '9',
'7', '0', '7', '1', '7', '2', '7', '3', '7', '4', '7', '5', '7', '6', '7', '7', '7', '8', '7', '9',
'8', '0', '8', '1', '8', '2', '8', '3', '8', '4', '8', '5', '8', '6', '8', '7', '8', '8', '8', '9',
'9', '0', '9', '1', '9', '2', '9', '3', '9', '4', '9', '5', '9', '6', '9', '7', '9', '8', '9', '9'};
// clang-format on
} // namespace __itoa
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___CHARCONV_TABLES

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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___CHARCONV_TO_CHARS
#define _LIBCPP___CHARCONV_TO_CHARS
#include <__charconv/to_chars_floating_point.h>
#include <__charconv/to_chars_integral.h>
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___CHARCONV_TO_CHARS

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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___CHARCONV_TO_CHARS_BASE_10_H
#define _LIBCPP___CHARCONV_TO_CHARS_BASE_10_H
#include <__algorithm/copy_n.h>
#include <__charconv/tables.h>
#include <__config>
#include <cstdint>
#include <limits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
namespace __itoa {
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append1(char* __first, uint32_t __value) noexcept {
*__first = '0' + static_cast<char>(__value);
return __first + 1;
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append2(char* __first, uint32_t __value) noexcept {
return std::copy_n(&__digits_base_10[__value * 2], 2, __first);
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append3(char* __first, uint32_t __value) noexcept {
return __itoa::__append2(__itoa::__append1(__first, __value / 100), __value % 100);
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append4(char* __first, uint32_t __value) noexcept {
return __itoa::__append2(__itoa::__append2(__first, __value / 100), __value % 100);
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append5(char* __first, uint32_t __value) noexcept {
return __itoa::__append4(__itoa::__append1(__first, __value / 10000), __value % 10000);
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append6(char* __first, uint32_t __value) noexcept {
return __itoa::__append4(__itoa::__append2(__first, __value / 10000), __value % 10000);
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append7(char* __first, uint32_t __value) noexcept {
return __itoa::__append6(__itoa::__append1(__first, __value / 1000000), __value % 1000000);
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append8(char* __first, uint32_t __value) noexcept {
return __itoa::__append6(__itoa::__append2(__first, __value / 1000000), __value % 1000000);
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char* __append9(char* __first, uint32_t __value) noexcept {
return __itoa::__append8(__itoa::__append1(__first, __value / 100000000), __value % 100000000);
}
template <class _Tp>
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char* __append10(char* __first, _Tp __value) noexcept {
return __itoa::__append8(__itoa::__append2(__first, static_cast<uint32_t>(__value / 100000000)),
static_cast<uint32_t>(__value % 100000000));
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char*
__base_10_u32(char* __first, uint32_t __value) noexcept {
if (__value < 1000000) {
if (__value < 10000) {
if (__value < 100) {
// 0 <= __value < 100
if (__value < 10)
return __itoa::__append1(__first, __value);
return __itoa::__append2(__first, __value);
}
// 100 <= __value < 10'000
if (__value < 1000)
return __itoa::__append3(__first, __value);
return __itoa::__append4(__first, __value);
}
// 10'000 <= __value < 1'000'000
if (__value < 100000)
return __itoa::__append5(__first, __value);
return __itoa::__append6(__first, __value);
}
// __value => 1'000'000
if (__value < 100000000) {
// 1'000'000 <= __value < 100'000'000
if (__value < 10000000)
return __itoa::__append7(__first, __value);
return __itoa::__append8(__first, __value);
}
// 100'000'000 <= __value < max
if (__value < 1000000000)
return __itoa::__append9(__first, __value);
return __itoa::__append10(__first, __value);
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char*
__base_10_u64(char* __buffer, uint64_t __value) noexcept {
if (__value <= UINT32_MAX)
return __itoa::__base_10_u32(__buffer, static_cast<uint32_t>(__value));
// Numbers in the range UINT32_MAX <= val < 10'000'000'000 always contain 10
// digits and are outputted after this if statement.
if (__value >= 10000000000) {
// This function properly deterimines the first non-zero leading digit.
__buffer = __itoa::__base_10_u32(__buffer, static_cast<uint32_t>(__value / 10000000000));
__value %= 10000000000;
}
return __itoa::__append10(__buffer, __value);
}
# ifndef _LIBCPP_HAS_NO_INT128
/// \returns 10^\a exp
///
/// \pre \a exp [19, 39]
///
/// \note The lookup table contains a partial set of exponents limiting the
/// range that can be used. However the range is sufficient for
/// \ref __base_10_u128.
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline __uint128_t __pow_10(int __exp) noexcept {
_LIBCPP_ASSERT(__exp >= __pow10_128_offset, "Index out of bounds");
return __pow10_128[__exp - __pow10_128_offset];
}
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI inline char*
__base_10_u128(char* __buffer, __uint128_t __value) noexcept {
_LIBCPP_ASSERT(
__value > numeric_limits<uint64_t>::max(), "The optimizations for this algorithm fail when this isn't true.");
// Unlike the 64 to 32 bit case the 128 bit case the "upper half" can't be
// stored in the "lower half". Instead we first need to handle the top most
// digits separately.
//
// Maximum unsigned values
// 64 bit 18'446'744'073'709'551'615 (20 digits)
// 128 bit 340'282'366'920'938'463'463'374'607'431'768'211'455 (39 digits)
// step 1 ^ ([0-1] digits)
// step 2 ^^^^^^^^^^^^^^^^^^^^^^^^^ ([0-19] digits)
// step 3 ^^^^^^^^^^^^^^^^^^^^^^^^^ (19 digits)
if (__value >= __itoa::__pow_10(38)) {
// step 1
__buffer = __itoa::__append1(__buffer, static_cast<uint32_t>(__value / __itoa::__pow_10(38)));
__value %= __itoa::__pow_10(38);
// step 2 always 19 digits.
// They are handled here since leading zeros need to be appended to the buffer,
__buffer = __itoa::__append9(__buffer, static_cast<uint32_t>(__value / __itoa::__pow_10(29)));
__value %= __itoa::__pow_10(29);
__buffer = __itoa::__append10(__buffer, static_cast<uint64_t>(__value / __itoa::__pow_10(19)));
__value %= __itoa::__pow_10(19);
} else {
// step 2
// This version needs to determine the position of the leading non-zero digit.
__buffer = __base_10_u64(__buffer, static_cast<uint64_t>(__value / __itoa::__pow_10(19)));
__value %= __itoa::__pow_10(19);
}
// Step 3
__buffer = __itoa::__append9(__buffer, static_cast<uint32_t>(__value / 10000000000));
__buffer = __itoa::__append10(__buffer, static_cast<uint64_t>(__value % 10000000000));
return __buffer;
}
# endif
} // namespace __itoa
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___CHARCONV_TO_CHARS_BASE_10_H

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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___CHARCONV_TO_CHARS_FLOATING_POINT_H
#define _LIBCPP___CHARCONV_TO_CHARS_FLOATING_POINT_H
#include <__availability>
#include <__charconv/chars_format.h>
#include <__charconv/to_chars_result.h>
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_FUNC_VIS to_chars_result
to_chars(char* __first, char* __last, float __value);
_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_FUNC_VIS to_chars_result
to_chars(char* __first, char* __last, double __value);
_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_FUNC_VIS to_chars_result
to_chars(char* __first, char* __last, long double __value);
_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_FUNC_VIS to_chars_result
to_chars(char* __first, char* __last, float __value, chars_format __fmt);
_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_FUNC_VIS to_chars_result
to_chars(char* __first, char* __last, double __value, chars_format __fmt);
_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_FUNC_VIS to_chars_result
to_chars(char* __first, char* __last, long double __value, chars_format __fmt);
_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_FUNC_VIS to_chars_result
to_chars(char* __first, char* __last, float __value, chars_format __fmt, int __precision);
_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_FUNC_VIS to_chars_result
to_chars(char* __first, char* __last, double __value, chars_format __fmt, int __precision);
_LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT _LIBCPP_FUNC_VIS to_chars_result
to_chars(char* __first, char* __last, long double __value, chars_format __fmt, int __precision);
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___CHARCONV_TO_CHARS_FLOATING_POINT_H

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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___CHARCONV_TO_CHARS_INTEGRAL_H
#define _LIBCPP___CHARCONV_TO_CHARS_INTEGRAL_H
#include <__algorithm/copy_n.h>
#include <__bit/countl.h>
#include <__charconv/tables.h>
#include <__charconv/to_chars_base_10.h>
#include <__charconv/to_chars_result.h>
#include <__charconv/traits.h>
#include <__config>
#include <__system_error/errc.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/integral_constant.h>
#include <__type_traits/is_same.h>
#include <__type_traits/make_32_64_or_128_bit.h>
#include <__type_traits/make_unsigned.h>
#include <__utility/unreachable.h>
#include <cstddef>
#include <cstdint>
#include <limits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
to_chars_result to_chars(char*, char*, bool, int = 10) = delete;
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
__to_chars_itoa(char* __first, char* __last, _Tp __value, false_type);
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
__to_chars_itoa(char* __first, char* __last, _Tp __value, true_type) {
auto __x = std::__to_unsigned_like(__value);
if (__value < 0 && __first != __last) {
*__first++ = '-';
__x = std::__complement(__x);
}
return std::__to_chars_itoa(__first, __last, __x, false_type());
}
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
__to_chars_itoa(char* __first, char* __last, _Tp __value, false_type) {
using __tx = __itoa::__traits<_Tp>;
auto __diff = __last - __first;
if (__tx::digits <= __diff || __tx::__width(__value) <= __diff)
return {__tx::__convert(__first, __value), errc(0)};
else
return {__last, errc::value_too_large};
}
# ifndef _LIBCPP_HAS_NO_INT128
template <>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
__to_chars_itoa(char* __first, char* __last, __uint128_t __value, false_type) {
// When the value fits in 64-bits use the 64-bit code path. This reduces
// the number of expensive calculations on 128-bit values.
//
// NOTE the 128-bit code path requires this optimization.
if (__value <= numeric_limits<uint64_t>::max())
return __to_chars_itoa(__first, __last, static_cast<uint64_t>(__value), false_type());
using __tx = __itoa::__traits<__uint128_t>;
auto __diff = __last - __first;
if (__tx::digits <= __diff || __tx::__width(__value) <= __diff)
return {__tx::__convert(__first, __value), errc(0)};
else
return {__last, errc::value_too_large};
}
# endif
template <class _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
__to_chars_integral(char* __first, char* __last, _Tp __value, int __base, false_type);
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
__to_chars_integral(char* __first, char* __last, _Tp __value, int __base, true_type) {
auto __x = std::__to_unsigned_like(__value);
if (__value < 0 && __first != __last) {
*__first++ = '-';
__x = std::__complement(__x);
}
return std::__to_chars_integral(__first, __last, __x, __base, false_type());
}
namespace __itoa {
template <unsigned _Base>
struct _LIBCPP_HIDDEN __integral;
template <>
struct _LIBCPP_HIDDEN __integral<2> {
template <typename _Tp>
_LIBCPP_HIDE_FROM_ABI static constexpr int __width(_Tp __value) noexcept {
// If value == 0 still need one digit. If the value != this has no
// effect since the code scans for the most significant bit set. (Note
// that __libcpp_clz doesn't work for 0.)
return numeric_limits<_Tp>::digits - std::__libcpp_clz(__value | 1);
}
template <typename _Tp>
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI static to_chars_result
__to_chars(char* __first, char* __last, _Tp __value) {
ptrdiff_t __cap = __last - __first;
int __n = __width(__value);
if (__n > __cap)
return {__last, errc::value_too_large};
__last = __first + __n;
char* __p = __last;
const unsigned __divisor = 16;
while (__value > __divisor) {
unsigned __c = __value % __divisor;
__value /= __divisor;
__p -= 4;
std::copy_n(&__base_2_lut[4 * __c], 4, __p);
}
do {
unsigned __c = __value % 2;
__value /= 2;
*--__p = "01"[__c];
} while (__value != 0);
return {__last, errc(0)};
}
};
template <>
struct _LIBCPP_HIDDEN __integral<8> {
template <typename _Tp>
_LIBCPP_HIDE_FROM_ABI static constexpr int __width(_Tp __value) noexcept {
// If value == 0 still need one digit. If the value != this has no
// effect since the code scans for the most significat bit set. (Note
// that __libcpp_clz doesn't work for 0.)
return ((numeric_limits<_Tp>::digits - std::__libcpp_clz(__value | 1)) + 2) / 3;
}
template <typename _Tp>
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI static to_chars_result
__to_chars(char* __first, char* __last, _Tp __value) {
ptrdiff_t __cap = __last - __first;
int __n = __width(__value);
if (__n > __cap)
return {__last, errc::value_too_large};
__last = __first + __n;
char* __p = __last;
unsigned __divisor = 64;
while (__value > __divisor) {
unsigned __c = __value % __divisor;
__value /= __divisor;
__p -= 2;
std::copy_n(&__base_8_lut[2 * __c], 2, __p);
}
do {
unsigned __c = __value % 8;
__value /= 8;
*--__p = "01234567"[__c];
} while (__value != 0);
return {__last, errc(0)};
}
};
template <>
struct _LIBCPP_HIDDEN __integral<16> {
template <typename _Tp>
_LIBCPP_HIDE_FROM_ABI static constexpr int __width(_Tp __value) noexcept {
// If value == 0 still need one digit. If the value != this has no
// effect since the code scans for the most significat bit set. (Note
// that __libcpp_clz doesn't work for 0.)
return (numeric_limits<_Tp>::digits - std::__libcpp_clz(__value | 1) + 3) / 4;
}
template <typename _Tp>
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI static to_chars_result
__to_chars(char* __first, char* __last, _Tp __value) {
ptrdiff_t __cap = __last - __first;
int __n = __width(__value);
if (__n > __cap)
return {__last, errc::value_too_large};
__last = __first + __n;
char* __p = __last;
unsigned __divisor = 256;
while (__value > __divisor) {
unsigned __c = __value % __divisor;
__value /= __divisor;
__p -= 2;
std::copy_n(&__base_16_lut[2 * __c], 2, __p);
}
if (__first != __last)
do {
unsigned __c = __value % 16;
__value /= 16;
*--__p = "0123456789abcdef"[__c];
} while (__value != 0);
return {__last, errc(0)};
}
};
} // namespace __itoa
template <unsigned _Base, typename _Tp, typename enable_if<(sizeof(_Tp) >= sizeof(unsigned)), int>::type = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __to_chars_integral_width(_Tp __value) {
return __itoa::__integral<_Base>::__width(__value);
}
template <unsigned _Base, typename _Tp, typename enable_if<(sizeof(_Tp) < sizeof(unsigned)), int>::type = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __to_chars_integral_width(_Tp __value) {
return std::__to_chars_integral_width<_Base>(static_cast<unsigned>(__value));
}
template <unsigned _Base, typename _Tp, typename enable_if<(sizeof(_Tp) >= sizeof(unsigned)), int>::type = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
__to_chars_integral(char* __first, char* __last, _Tp __value) {
return __itoa::__integral<_Base>::__to_chars(__first, __last, __value);
}
template <unsigned _Base, typename _Tp, typename enable_if<(sizeof(_Tp) < sizeof(unsigned)), int>::type = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
__to_chars_integral(char* __first, char* __last, _Tp __value) {
return std::__to_chars_integral<_Base>(__first, __last, static_cast<unsigned>(__value));
}
template <typename _Tp>
_LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __to_chars_integral_width(_Tp __value, unsigned __base) {
_LIBCPP_ASSERT(__value >= 0, "The function requires a non-negative value.");
unsigned __base_2 = __base * __base;
unsigned __base_3 = __base_2 * __base;
unsigned __base_4 = __base_2 * __base_2;
int __r = 0;
while (true) {
if (__value < __base)
return __r + 1;
if (__value < __base_2)
return __r + 2;
if (__value < __base_3)
return __r + 3;
if (__value < __base_4)
return __r + 4;
__value /= __base_4;
__r += 4;
}
__libcpp_unreachable();
}
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
__to_chars_integral(char* __first, char* __last, _Tp __value, int __base, false_type) {
if (__base == 10) [[likely]]
return std::__to_chars_itoa(__first, __last, __value, false_type());
switch (__base) {
case 2:
return std::__to_chars_integral<2>(__first, __last, __value);
case 8:
return std::__to_chars_integral<8>(__first, __last, __value);
case 16:
return std::__to_chars_integral<16>(__first, __last, __value);
}
ptrdiff_t __cap = __last - __first;
int __n = std::__to_chars_integral_width(__value, __base);
if (__n > __cap)
return {__last, errc::value_too_large};
__last = __first + __n;
char* __p = __last;
do {
unsigned __c = __value % __base;
__value /= __base;
*--__p = "0123456789abcdefghijklmnopqrstuvwxyz"[__c];
} while (__value != 0);
return {__last, errc(0)};
}
template <typename _Tp, typename enable_if<is_integral<_Tp>::value, int>::type = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
to_chars(char* __first, char* __last, _Tp __value) {
using _Type = __make_32_64_or_128_bit_t<_Tp>;
static_assert(!is_same<_Type, void>::value, "unsupported integral type used in to_chars");
return std::__to_chars_itoa(__first, __last, static_cast<_Type>(__value), is_signed<_Tp>());
}
template <typename _Tp, typename enable_if<is_integral<_Tp>::value, int>::type = 0>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI to_chars_result
to_chars(char* __first, char* __last, _Tp __value, int __base) {
_LIBCPP_ASSERT(2 <= __base && __base <= 36, "base not in [2, 36]");
using _Type = __make_32_64_or_128_bit_t<_Tp>;
return std::__to_chars_integral(__first, __last, static_cast<_Type>(__value), __base, is_signed<_Tp>());
}
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___CHARCONV_TO_CHARS_INTEGRAL_H

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third_party/libcxx/__charconv/to_chars_result.h vendored Normal file
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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___CHARCONV_TO_CHARS_RESULT_H
#define _LIBCPP___CHARCONV_TO_CHARS_RESULT_H
#include <__config>
#include <__system_error/errc.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
struct _LIBCPP_TYPE_VIS to_chars_result {
char* ptr;
errc ec;
# if _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI friend bool operator==(const to_chars_result&, const to_chars_result&) = default;
# endif
};
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___CHARCONV_TO_CHARS_RESULT_H

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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___CHARCONV_TRAITS
#define _LIBCPP___CHARCONV_TRAITS
#include <__bit/countl.h>
#include <__charconv/tables.h>
#include <__charconv/to_chars_base_10.h>
#include <__config>
#include <__type_traits/enable_if.h>
#include <__type_traits/is_unsigned.h>
#include <cstdint>
#include <limits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
namespace __itoa {
template <typename _Tp, typename = void>
struct _LIBCPP_HIDDEN __traits_base;
template <typename _Tp>
struct _LIBCPP_HIDDEN __traits_base<_Tp, __enable_if_t<sizeof(_Tp) <= sizeof(uint32_t)>> {
using type = uint32_t;
/// The width estimation using a log10 algorithm.
///
/// The algorithm is based on
/// http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10
/// Instead of using IntegerLogBase2 it uses __libcpp_clz. Since that
/// function requires its input to have at least one bit set the value of
/// zero is set to one. This means the first element of the lookup table is
/// zero.
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __width(_Tp __v) {
auto __t = (32 - std::__libcpp_clz(static_cast<type>(__v | 1))) * 1233 >> 12;
return __t - (__v < __itoa::__pow10_32[__t]) + 1;
}
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char* __convert(char* __p, _Tp __v) {
return __itoa::__base_10_u32(__p, __v);
}
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI decltype(__pow10_32)& __pow() {
return __itoa::__pow10_32;
}
};
template <typename _Tp>
struct _LIBCPP_HIDDEN __traits_base<_Tp, __enable_if_t<sizeof(_Tp) == sizeof(uint64_t)>> {
using type = uint64_t;
/// The width estimation using a log10 algorithm.
///
/// The algorithm is based on
/// http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10
/// Instead of using IntegerLogBase2 it uses __libcpp_clz. Since that
/// function requires its input to have at least one bit set the value of
/// zero is set to one. This means the first element of the lookup table is
/// zero.
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __width(_Tp __v) {
auto __t = (64 - std::__libcpp_clz(static_cast<type>(__v | 1))) * 1233 >> 12;
return __t - (__v < __itoa::__pow10_64[__t]) + 1;
}
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char* __convert(char* __p, _Tp __v) {
return __itoa::__base_10_u64(__p, __v);
}
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI decltype(__pow10_64)& __pow() {
return __itoa::__pow10_64;
}
};
# ifndef _LIBCPP_HAS_NO_INT128
template <typename _Tp>
struct _LIBCPP_HIDDEN __traits_base<_Tp, __enable_if_t<sizeof(_Tp) == sizeof(__uint128_t)> > {
using type = __uint128_t;
/// The width estimation using a log10 algorithm.
///
/// The algorithm is based on
/// http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10
/// Instead of using IntegerLogBase2 it uses __libcpp_clz. Since that
/// function requires its input to have at least one bit set the value of
/// zero is set to one. This means the first element of the lookup table is
/// zero.
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI int __width(_Tp __v) {
_LIBCPP_ASSERT(
__v > numeric_limits<uint64_t>::max(), "The optimizations for this algorithm fail when this isn't true.");
// There's always a bit set in the upper 64-bits.
auto __t = (128 - std::__libcpp_clz(static_cast<uint64_t>(__v >> 64))) * 1233 >> 12;
_LIBCPP_ASSERT(__t >= __itoa::__pow10_128_offset, "Index out of bounds");
// __t is adjusted since the lookup table misses the lower entries.
return __t - (__v < __itoa::__pow10_128[__t - __itoa::__pow10_128_offset]) + 1;
}
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char* __convert(char* __p, _Tp __v) {
return __itoa::__base_10_u128(__p, __v);
}
// TODO FMT This pow function should get an index.
// By moving this to its own header it can be reused by the pow function in to_chars_base_10.
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI decltype(__pow10_128)& __pow() {
return __itoa::__pow10_128;
}
};
# endif
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool
__mul_overflowed(unsigned char __a, _Tp __b, unsigned char& __r) {
auto __c = __a * __b;
__r = __c;
return __c > numeric_limits<unsigned char>::max();
}
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool
__mul_overflowed(unsigned short __a, _Tp __b, unsigned short& __r) {
auto __c = __a * __b;
__r = __c;
return __c > numeric_limits<unsigned short>::max();
}
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool __mul_overflowed(_Tp __a, _Tp __b, _Tp& __r) {
static_assert(is_unsigned<_Tp>::value, "");
return __builtin_mul_overflow(__a, __b, &__r);
}
template <typename _Tp, typename _Up>
inline _LIBCPP_HIDE_FROM_ABI bool _LIBCPP_CONSTEXPR_SINCE_CXX23 __mul_overflowed(_Tp __a, _Up __b, _Tp& __r) {
return __itoa::__mul_overflowed(__a, static_cast<_Tp>(__b), __r);
}
template <typename _Tp>
struct _LIBCPP_HIDDEN __traits : __traits_base<_Tp> {
static constexpr int digits = numeric_limits<_Tp>::digits10 + 1;
using __traits_base<_Tp>::__pow;
using typename __traits_base<_Tp>::type;
// precondition: at least one non-zero character available
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI char const*
__read(char const* __p, char const* __ep, type& __a, type& __b) {
type __cprod[digits];
int __j = digits - 1;
int __i = digits;
do {
if (*__p < '0' || *__p > '9')
break;
__cprod[--__i] = *__p++ - '0';
} while (__p != __ep && __i != 0);
__a = __inner_product(__cprod + __i + 1, __cprod + __j, __pow() + 1, __cprod[__i]);
if (__itoa::__mul_overflowed(__cprod[__j], __pow()[__j - __i], __b))
--__p;
return __p;
}
template <typename _It1, typename _It2, class _Up>
static _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI _Up
__inner_product(_It1 __first1, _It1 __last1, _It2 __first2, _Up __init) {
for (; __first1 < __last1; ++__first1, ++__first2)
__init = __init + *__first1 * *__first2;
return __init;
}
};
} // namespace __itoa
template <typename _Tp>
inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI _Tp __complement(_Tp __x) {
static_assert(is_unsigned<_Tp>::value, "cast to unsigned first");
return _Tp(~__x + 1);
}
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___CHARCONV_TRAITS