libcxx/src/charconv.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include <charconv>
  10 #include <string.h>
  11
  12 #include "include/to_chars_floating_point.h"
  13
  14 _LIBCPP_BEGIN_NAMESPACE_STD
  15
  16 #ifndef _LIBCPP_ABI_DO_NOT_EXPORT_TO_CHARS_BASE_10
  17
  18 namespace __itoa
  19 {
  20
  21 _LIBCPP_EXPORTED_FROM_ABI char*
  22 __u32toa(uint32_t value, char* buffer) noexcept
  23 {
  24   return __base_10_u32(buffer, value);
  25 }
  26
  27 _LIBCPP_EXPORTED_FROM_ABI char*
  28 __u64toa(uint64_t value, char* buffer) noexcept
  29 {
  30   return __base_10_u64(buffer, value);
  31 }
  32
  33 }  // namespace __itoa
  34
  35 #endif // _LIBCPP_ABI_DO_NOT_EXPORT_TO_CHARS_BASE_10
  36
  37 // The original version of floating-point to_chars was written by Microsoft and
  38 // contributed with the following license.
  39
  40 // Copyright (c) Microsoft Corporation.
  41 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  42
  43 // This implementation is dedicated to the memory of Mary and Thavatchai.
  44
  45 to_chars_result to_chars(char* __first, char* __last, float __value) {
  46   return _Floating_to_chars<_Floating_to_chars_overload::_Plain>(__first, __last, __value, chars_format{}, 0);
  47 }
  48
  49 to_chars_result to_chars(char* __first, char* __last, double __value) {
  50   return _Floating_to_chars<_Floating_to_chars_overload::_Plain>(__first, __last, __value, chars_format{}, 0);
  51 }
  52
  53 to_chars_result to_chars(char* __first, char* __last, long double __value) {
  54   return _Floating_to_chars<_Floating_to_chars_overload::_Plain>(__first, __last, static_cast<double>(__value),
  55                                                                  chars_format{}, 0);
  56 }
  57
  58 to_chars_result to_chars(char* __first, char* __last, float __value, chars_format __fmt) {
  59   return _Floating_to_chars<_Floating_to_chars_overload::_Format_only>(__first, __last, __value, __fmt, 0);
  60 }
  61
  62 to_chars_result to_chars(char* __first, char* __last, double __value, chars_format __fmt) {
  63   return _Floating_to_chars<_Floating_to_chars_overload::_Format_only>(__first, __last, __value, __fmt, 0);
  64 }
  65
  66 to_chars_result to_chars(char* __first, char* __last, long double __value, chars_format __fmt) {
  67   return _Floating_to_chars<_Floating_to_chars_overload::_Format_only>(__first, __last, static_cast<double>(__value),
  68                                                                        __fmt, 0);
  69 }
  70
  71 to_chars_result to_chars(char* __first, char* __last, float __value, chars_format __fmt, int __precision) {
  72   return _Floating_to_chars<_Floating_to_chars_overload::_Format_precision>(__first, __last, __value, __fmt,
  73                                                                             __precision);
  74 }
  75
  76 to_chars_result to_chars(char* __first, char* __last, double __value, chars_format __fmt, int __precision) {
  77   return _Floating_to_chars<_Floating_to_chars_overload::_Format_precision>(__first, __last, __value, __fmt,
  78                                                                             __precision);
  79 }
  80
  81 to_chars_result to_chars(char* __first, char* __last, long double __value, chars_format __fmt, int __precision) {
  82   return _Floating_to_chars<_Floating_to_chars_overload::_Format_precision>(
  83       __first, __last, static_cast<double>(__value), __fmt, __precision);
  84 }
  85
  86 _LIBCPP_END_NAMESPACE_STD