зеркало из https://github.com/microsoft/STL.git
158 строки
6.8 KiB
C++
158 строки
6.8 KiB
C++
// xcharconv_ryu_tables.h internal header
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// Copyright (c) Microsoft Corporation.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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// Copyright 2018 Ulf Adams
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Boost Software License - Version 1.0 - August 17th, 2003
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#ifndef _XCHARCONV_RYU_TABLES_H
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#define _XCHARCONV_RYU_TABLES_H
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#include <yvals_core.h>
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#if _STL_COMPILER_PREPROCESSOR
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#if !_HAS_CXX17
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#error The contents of <charconv> are only available with C++17. (Also, you should not include this internal header.)
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#endif // !_HAS_CXX17
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#include <cstdint>
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#pragma pack(push, _CRT_PACKING)
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#pragma warning(push, _STL_WARNING_LEVEL)
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#pragma warning(disable : _STL_DISABLED_WARNINGS)
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_STL_DISABLE_CLANG_WARNINGS
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#pragma push_macro("new")
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#undef new
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_STD_BEGIN
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// https://github.com/ulfjack/ryu
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// See xcharconv_ryu.h for the exact commit.
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// (Keep the cgmanifest.json commitHash in sync.)
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// clang-format off
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// vvvvvvvvvv DERIVED FROM digit_table.h vvvvvvvvvv
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// A table of all two-digit numbers. This is used to speed up decimal digit
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// generation by copying pairs of digits into the final output.
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template <class _CharT> constexpr _CharT __DIGIT_TABLE[] = {_CharT{}};
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template <> inline constexpr char __DIGIT_TABLE<char>[200] = {
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'0','0','0','1','0','2','0','3','0','4','0','5','0','6','0','7','0','8','0','9',
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'1','0','1','1','1','2','1','3','1','4','1','5','1','6','1','7','1','8','1','9',
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'2','0','2','1','2','2','2','3','2','4','2','5','2','6','2','7','2','8','2','9',
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'3','0','3','1','3','2','3','3','3','4','3','5','3','6','3','7','3','8','3','9',
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'4','0','4','1','4','2','4','3','4','4','4','5','4','6','4','7','4','8','4','9',
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'5','0','5','1','5','2','5','3','5','4','5','5','5','6','5','7','5','8','5','9',
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'6','0','6','1','6','2','6','3','6','4','6','5','6','6','6','7','6','8','6','9',
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'7','0','7','1','7','2','7','3','7','4','7','5','7','6','7','7','7','8','7','9',
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'8','0','8','1','8','2','8','3','8','4','8','5','8','6','8','7','8','8','8','9',
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'9','0','9','1','9','2','9','3','9','4','9','5','9','6','9','7','9','8','9','9'
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};
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template <> inline constexpr wchar_t __DIGIT_TABLE<wchar_t>[200] = {
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L'0',L'0',L'0',L'1',L'0',L'2',L'0',L'3',L'0',L'4',L'0',L'5',L'0',L'6',L'0',L'7',L'0',L'8',L'0',L'9',
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L'1',L'0',L'1',L'1',L'1',L'2',L'1',L'3',L'1',L'4',L'1',L'5',L'1',L'6',L'1',L'7',L'1',L'8',L'1',L'9',
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L'2',L'0',L'2',L'1',L'2',L'2',L'2',L'3',L'2',L'4',L'2',L'5',L'2',L'6',L'2',L'7',L'2',L'8',L'2',L'9',
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L'3',L'0',L'3',L'1',L'3',L'2',L'3',L'3',L'3',L'4',L'3',L'5',L'3',L'6',L'3',L'7',L'3',L'8',L'3',L'9',
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L'4',L'0',L'4',L'1',L'4',L'2',L'4',L'3',L'4',L'4',L'4',L'5',L'4',L'6',L'4',L'7',L'4',L'8',L'4',L'9',
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L'5',L'0',L'5',L'1',L'5',L'2',L'5',L'3',L'5',L'4',L'5',L'5',L'5',L'6',L'5',L'7',L'5',L'8',L'5',L'9',
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L'6',L'0',L'6',L'1',L'6',L'2',L'6',L'3',L'6',L'4',L'6',L'5',L'6',L'6',L'6',L'7',L'6',L'8',L'6',L'9',
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L'7',L'0',L'7',L'1',L'7',L'2',L'7',L'3',L'7',L'4',L'7',L'5',L'7',L'6',L'7',L'7',L'7',L'8',L'7',L'9',
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L'8',L'0',L'8',L'1',L'8',L'2',L'8',L'3',L'8',L'4',L'8',L'5',L'8',L'6',L'8',L'7',L'8',L'8',L'8',L'9',
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L'9',L'0',L'9',L'1',L'9',L'2',L'9',L'3',L'9',L'4',L'9',L'5',L'9',L'6',L'9',L'7',L'9',L'8',L'9',L'9'
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};
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// ^^^^^^^^^^ DERIVED FROM digit_table.h ^^^^^^^^^^
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// vvvvvvvvvv DERIVED FROM d2s_full_table.h vvvvvvvvvv
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// These tables are generated by PrintDoubleLookupTable.
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extern const uint64_t __DOUBLE_POW5_INV_SPLIT[292][2];
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extern const uint64_t __DOUBLE_POW5_SPLIT[326][2];
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// ^^^^^^^^^^ DERIVED FROM d2s_full_table.h ^^^^^^^^^^
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// vvvvvvvvvv DERIVED FROM d2fixed_full_table.h vvvvvvvvvv
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inline constexpr int __TABLE_SIZE = 64;
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inline constexpr uint16_t __POW10_OFFSET[__TABLE_SIZE] = {
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0, 2, 5, 8, 12, 16, 21, 26, 32, 39,
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46, 54, 62, 71, 80, 90, 100, 111, 122, 134,
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146, 159, 173, 187, 202, 217, 233, 249, 266, 283,
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301, 319, 338, 357, 377, 397, 418, 440, 462, 485,
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508, 532, 556, 581, 606, 632, 658, 685, 712, 740,
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769, 798, 828, 858, 889, 920, 952, 984, 1017, 1050,
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1084, 1118, 1153, 1188
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};
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extern const uint64_t __POW10_SPLIT[1224][3];
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inline constexpr int __TABLE_SIZE_2 = 69;
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inline constexpr int __ADDITIONAL_BITS_2 = 120;
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inline constexpr uint16_t __POW10_OFFSET_2[__TABLE_SIZE_2] = {
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0, 2, 6, 12, 20, 29, 40, 52, 66, 80,
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95, 112, 130, 150, 170, 192, 215, 240, 265, 292,
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320, 350, 381, 413, 446, 480, 516, 552, 590, 629,
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670, 712, 755, 799, 845, 892, 940, 989, 1040, 1092,
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1145, 1199, 1254, 1311, 1369, 1428, 1488, 1550, 1613, 1678,
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1743, 1810, 1878, 1947, 2017, 2088, 2161, 2235, 2311, 2387,
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2465, 2544, 2625, 2706, 2789, 2873, 2959, 3046, 3133
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};
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inline constexpr uint8_t __MIN_BLOCK_2[__TABLE_SIZE_2] = {
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0, 0, 0, 0, 0, 0, 1, 1, 2, 3,
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3, 4, 4, 5, 5, 6, 6, 7, 7, 8,
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8, 9, 9, 10, 11, 11, 12, 12, 13, 13,
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14, 14, 15, 15, 16, 16, 17, 17, 18, 19,
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19, 20, 20, 21, 21, 22, 22, 23, 23, 24,
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24, 25, 26, 26, 27, 27, 28, 28, 29, 29,
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30, 30, 31, 31, 32, 32, 33, 34, 0
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};
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extern const uint64_t __POW10_SPLIT_2[3133][3];
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// ^^^^^^^^^^ DERIVED FROM d2fixed_full_table.h ^^^^^^^^^^
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// clang-format on
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_STD_END
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#pragma pop_macro("new")
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_STL_RESTORE_CLANG_WARNINGS
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#pragma warning(pop)
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#pragma pack(pop)
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#endif // _STL_COMPILER_PREPROCESSOR
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#endif // _XCHARCONV_RYU_TABLES_H
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