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Diffstat (limited to 'lib/libcxx/src/charconv.cpp')
| -rw-r--r-- | lib/libcxx/src/charconv.cpp | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/lib/libcxx/src/charconv.cpp b/lib/libcxx/src/charconv.cpp deleted file mode 100644 index ec241db7447..00000000000 --- a/lib/libcxx/src/charconv.cpp +++ /dev/null @@ -1,233 +0,0 @@ -//===------------------------- charconv.cpp -------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#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) -{ - *buffer = '0' + static_cast<char>(i); - return buffer + 1; -} - -template <typename T> -inline _LIBCPP_INLINE_VISIBILITY char* -append2(char* buffer, T i) -{ - memcpy(buffer, &cDigitsLut[(i)*2], 2); - return buffer + 2; -} - -template <typename T> -inline _LIBCPP_INLINE_VISIBILITY char* -append3(char* buffer, T i) -{ - return append2(append1(buffer, (i) / 100), (i) % 100); -} - -template <typename T> -inline _LIBCPP_INLINE_VISIBILITY char* -append4(char* buffer, T i) -{ - return append2(append2(buffer, (i) / 100), (i) % 100); -} - -char* -__u32toa(uint32_t value, char* buffer) -{ - if (value < 10000) - { - if (value < 100) - { - if (value < 10) - buffer = append1(buffer, value); - else - buffer = append2(buffer, value); - } - else - { - if (value < 1000) - buffer = append3(buffer, value); - else - buffer = append4(buffer, value); - } - } - else if (value < 100000000) - { - // value = bbbbcccc - const uint32_t b = value / 10000; - const uint32_t c = value % 10000; - - if (value < 1000000) - { - if (value < 100000) - buffer = append1(buffer, b); - else - buffer = append2(buffer, b); - } - else - { - if (value < 10000000) - buffer = append3(buffer, b); - else - buffer = append4(buffer, b); - } - - buffer = append4(buffer, c); - } - else - { - // value = aabbbbcccc in decimal - const uint32_t a = value / 100000000; // 1 to 42 - value %= 100000000; - - if (a < 10) - buffer = append1(buffer, a); - else - buffer = append2(buffer, a); - - buffer = append4(buffer, value / 10000); - buffer = append4(buffer, value % 10000); - } - - return buffer; -} - -char* -__u64toa(uint64_t value, char* buffer) -{ - if (value < 100000000) - { - uint32_t v = static_cast<uint32_t>(value); - if (v < 10000) - { - if (v < 100) - { - if (v < 10) - buffer = append1(buffer, v); - else - buffer = append2(buffer, v); - } - else - { - if (v < 1000) - buffer = append3(buffer, v); - else - buffer = append4(buffer, v); - } - } - else - { - // value = bbbbcccc - const uint32_t b = v / 10000; - const uint32_t c = v % 10000; - - if (v < 1000000) - { - if (v < 100000) - buffer = append1(buffer, b); - else - buffer = append2(buffer, b); - } - else - { - if (v < 10000000) - buffer = append3(buffer, b); - else - buffer = append4(buffer, b); - } - - buffer = append4(buffer, c); - } - } - else if (value < 10000000000000000) - { - const uint32_t v0 = static_cast<uint32_t>(value / 100000000); - const uint32_t v1 = static_cast<uint32_t>(value % 100000000); - - const uint32_t b0 = v0 / 10000; - const uint32_t c0 = v0 % 10000; - - if (v0 < 1000000) - { - if (v0 < 100000) - buffer = append1(buffer, b0); - else - buffer = append2(buffer, b0); - } - else - { - if (v0 < 10000000) - buffer = append3(buffer, b0); - else - buffer = append4(buffer, b0); - } - - buffer = append4(buffer, c0); - 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; - - if (a < 100) - { - if (a < 10) - buffer = append1(buffer, a); - else - buffer = append2(buffer, a); - } - else - { - if (a < 1000) - buffer = append3(buffer, a); - else - buffer = append4(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 |