diff options
author | danlark <danlark@yandex-team.ru> | 2022-02-10 16:46:10 +0300 |
---|---|---|
committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:46:10 +0300 |
commit | baa58daefa91fde4b4769facdbd2903763b9c6a8 (patch) | |
tree | 1a2c5ffcf89eb53ecd79dbc9bc0a195c27404d0c /contrib/libs/cxxsupp/libcxx/src/charconv.cpp | |
parent | 3426a9bc7f169ae9da54cef557ad2a33f6e8eee0 (diff) | |
download | ydb-baa58daefa91fde4b4769facdbd2903763b9c6a8.tar.gz |
Restoring authorship annotation for <danlark@yandex-team.ru>. Commit 2 of 2.
Diffstat (limited to 'contrib/libs/cxxsupp/libcxx/src/charconv.cpp')
-rw-r--r-- | contrib/libs/cxxsupp/libcxx/src/charconv.cpp | 218 |
1 files changed, 109 insertions, 109 deletions
diff --git a/contrib/libs/cxxsupp/libcxx/src/charconv.cpp b/contrib/libs/cxxsupp/libcxx/src/charconv.cpp index c16b534e8a..78439f9683 100644 --- a/contrib/libs/cxxsupp/libcxx/src/charconv.cpp +++ b/contrib/libs/cxxsupp/libcxx/src/charconv.cpp @@ -1,65 +1,65 @@ -//===------------------------- charconv.cpp -------------------------------===// -// -// 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 -// -//===----------------------------------------------------------------------===// - -#include "charconv" -#include <string.h> - -_LIBCPP_BEGIN_NAMESPACE_STD - -namespace __itoa -{ - -static constexpr char cDigitsLut[200] = { - '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'}; - -template <typename T> -inline _LIBCPP_INLINE_VISIBILITY char* +//===------------------------- charconv.cpp -------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#include "charconv" +#include <string.h> + +_LIBCPP_BEGIN_NAMESPACE_STD + +namespace __itoa +{ + +static constexpr char cDigitsLut[200] = { + '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'}; + +template <typename T> +inline _LIBCPP_INLINE_VISIBILITY char* append1(char* buffer, T i) noexcept -{ - *buffer = '0' + static_cast<char>(i); - return buffer + 1; -} - -template <typename T> -inline _LIBCPP_INLINE_VISIBILITY char* +{ + *buffer = '0' + static_cast<char>(i); + return buffer + 1; +} + +template <typename T> +inline _LIBCPP_INLINE_VISIBILITY char* append2(char* buffer, T i) noexcept -{ - memcpy(buffer, &cDigitsLut[(i)*2], 2); - return buffer + 2; -} - -template <typename T> -inline _LIBCPP_INLINE_VISIBILITY char* +{ + memcpy(buffer, &cDigitsLut[(i)*2], 2); + return buffer + 2; +} + +template <typename T> +inline _LIBCPP_INLINE_VISIBILITY char* append3(char* buffer, T i) noexcept -{ - return append2(append1(buffer, (i) / 100), (i) % 100); -} - -template <typename T> -inline _LIBCPP_INLINE_VISIBILITY char* +{ + return append2(append1(buffer, (i) / 100), (i) % 100); +} + +template <typename T> +inline _LIBCPP_INLINE_VISIBILITY char* append4(char* buffer, T i) noexcept -{ - return append2(append2(buffer, (i) / 100), (i) % 100); -} - +{ + return append2(append2(buffer, (i) / 100), (i) % 100); +} + template <typename T> inline _LIBCPP_INLINE_VISIBILITY char* append2_no_zeros(char* buffer, T v) noexcept @@ -81,7 +81,7 @@ append4_no_zeros(char* buffer, T v) noexcept else return append4(buffer, v); } - + template <typename T> inline _LIBCPP_INLINE_VISIBILITY char* append8_no_zeros(char* buffer, T v) noexcept @@ -97,64 +97,64 @@ append8_no_zeros(char* buffer, T v) noexcept } return buffer; } - + char* __u32toa(uint32_t value, char* buffer) noexcept { if (value < 100000000) { buffer = append8_no_zeros(buffer, value); - } - else - { - // value = aabbbbcccc in decimal - const uint32_t a = value / 100000000; // 1 to 42 - value %= 100000000; - + } + else + { + // value = aabbbbcccc in decimal + const uint32_t a = value / 100000000; // 1 to 42 + value %= 100000000; + buffer = append2_no_zeros(buffer, a); - buffer = append4(buffer, value / 10000); - buffer = append4(buffer, value % 10000); - } - - return buffer; -} - -char* + buffer = append4(buffer, value / 10000); + buffer = append4(buffer, value % 10000); + } + + return buffer; +} + +char* __u64toa(uint64_t value, char* buffer) noexcept -{ - if (value < 100000000) - { - uint32_t v = static_cast<uint32_t>(value); +{ + if (value < 100000000) + { + uint32_t v = static_cast<uint32_t>(value); buffer = append8_no_zeros(buffer, v); - } - else if (value < 10000000000000000) - { - const uint32_t v0 = static_cast<uint32_t>(value / 100000000); - const uint32_t v1 = static_cast<uint32_t>(value % 100000000); - + } + else if (value < 10000000000000000) + { + const uint32_t v0 = static_cast<uint32_t>(value / 100000000); + const uint32_t v1 = static_cast<uint32_t>(value % 100000000); + buffer = append8_no_zeros(buffer, v0); - buffer = append4(buffer, v1 / 10000); - buffer = append4(buffer, v1 % 10000); - } - else - { - const uint32_t a = - static_cast<uint32_t>(value / 10000000000000000); // 1 to 1844 - value %= 10000000000000000; - + buffer = append4(buffer, v1 / 10000); + buffer = append4(buffer, v1 % 10000); + } + else + { + const uint32_t a = + static_cast<uint32_t>(value / 10000000000000000); // 1 to 1844 + value %= 10000000000000000; + buffer = append4_no_zeros(buffer, a); - - const uint32_t v0 = static_cast<uint32_t>(value / 100000000); - const uint32_t v1 = static_cast<uint32_t>(value % 100000000); - buffer = append4(buffer, v0 / 10000); - buffer = append4(buffer, v0 % 10000); - buffer = append4(buffer, v1 / 10000); - buffer = append4(buffer, v1 % 10000); - } - - return buffer; -} - -} // namespace __itoa - -_LIBCPP_END_NAMESPACE_STD + + const uint32_t v0 = static_cast<uint32_t>(value / 100000000); + const uint32_t v1 = static_cast<uint32_t>(value % 100000000); + buffer = append4(buffer, v0 / 10000); + buffer = append4(buffer, v0 % 10000); + buffer = append4(buffer, v1 / 10000); + buffer = append4(buffer, v1 % 10000); + } + + return buffer; +} + +} // namespace __itoa + +_LIBCPP_END_NAMESPACE_STD |