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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_FLOATING_POINT_H
#define _LIBCPP___CHARCONV_FROM_CHARS_FLOATING_POINT_H
#include <__assert>
#include <__charconv/chars_format.h>
#include <__charconv/from_chars_result.h>
#include <__config>
#include <__cstddef/ptrdiff_t.h>
#include <__system_error/errc.h>
#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
template <class _Fp>
struct __from_chars_result {
_Fp __value;
ptrdiff_t __n;
errc __ec;
};
template <class _Fp>
_LIBCPP_EXPORTED_FROM_ABI __from_chars_result<_Fp> __from_chars_floating_point(
_LIBCPP_NOESCAPE const char* __first, _LIBCPP_NOESCAPE const char* __last, chars_format __fmt);
extern template __from_chars_result<float> __from_chars_floating_point(
_LIBCPP_NOESCAPE const char* __first, _LIBCPP_NOESCAPE const char* __last, chars_format __fmt);
extern template __from_chars_result<double> __from_chars_floating_point(
_LIBCPP_NOESCAPE const char* __first, _LIBCPP_NOESCAPE const char* __last, chars_format __fmt);
template <class _Fp>
_LIBCPP_HIDE_FROM_ABI from_chars_result
__from_chars(const char* __first, const char* __last, _Fp& __value, chars_format __fmt) {
__from_chars_result<_Fp> __r = std::__from_chars_floating_point<_Fp>(__first, __last, __fmt);
if (__r.__ec != errc::invalid_argument)
__value = __r.__value;
return {__first + __r.__n, __r.__ec};
}
_LIBCPP_AVAILABILITY_FROM_CHARS_FLOATING_POINT _LIBCPP_HIDE_FROM_ABI inline from_chars_result
from_chars(const char* __first, const char* __last, float& __value, chars_format __fmt = chars_format::general) {
return std::__from_chars<float>(__first, __last, __value, __fmt);
}
_LIBCPP_AVAILABILITY_FROM_CHARS_FLOATING_POINT _LIBCPP_HIDE_FROM_ABI inline from_chars_result
from_chars(const char* __first, const char* __last, double& __value, chars_format __fmt = chars_format::general) {
return std::__from_chars<double>(__first, __last, __value, __fmt);
}
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___CHARCONV_FROM_CHARS_FLOATING_POINT_H
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