llvm/libc/src/stdlib/str_from_util.h

//===-- Implementation header for strfromx() utilitites -------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// According to the C23 standard, any input character sequences except a
// precision specifier and the usual floating point formats, namely
// %{a,A,e,E,f,F,g,G}, are not allowed and any code that does otherwise results
// in undefined behaviour(including use of a '%%' conversion specifier); which
// in this case is that the buffer string is simply populated with the format
// string. The case of the input being nullptr should be handled in the calling
// function (strfromf, strfromd, strfroml) itself.

#ifndef LLVM_LIBC_SRC_STDLIB_STRFROM_UTIL_H
#define LLVM_LIBC_SRC_STDLIB_STRFROM_UTIL_H

#include "src/__support/CPP/type_traits.h"
#include "src/__support/macros/config.h"
#include "src/__support/str_to_integer.h"
#include "src/stdio/printf_core/converter_atlas.h"
#include "src/stdio/printf_core/core_structs.h"
#include "src/stdio/printf_core/writer.h"

#include <stddef.h>

namespace LIBC_NAMESPACE_DECL {
namespace internal {

storage_type;

template <typename T>
printf_core::FormatSection parse_format_string(const char *__restrict format,
                                               T fp) { … }

template <typename T>
int strfromfloat_convert(printf_core::Writer *writer,
                         const printf_core::FormatSection &section) { … }

} // namespace internal
} // namespace LIBC_NAMESPACE_DECL

#endif // LLVM_LIBC_SRC_STDLIB_STRFROM_UTIL_H