strtoul.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2021 Tobias Hienzsch
 
#ifndef TETL_CSTDLIB_STRTOUL_HPP
#define TETL_CSTDLIB_STRTOUL_HPP
 
#include <etl/_cstring/strlen.hpp>
#include <etl/_strings/to_integer.hpp>
 
namespace etl {
 
/// \brief Interprets an integer value in a byte string pointed to by str.
///
/// https://en.cppreference.com/w/cpp/string/byte/strtoul
[[nodiscard]] constexpr auto strtoul(char const* str, char const** last, int base) noexcept -> unsigned long
{
    auto const res = strings::to_integer<unsigned long>(str, static_cast<unsigned long>(base));
    if (last != nullptr) {
        *last = res.end;
    }
    return res.value;
}
 
/// \brief Interprets an integer value in a byte string pointed to by str.
///
/// https://en.cppreference.com/w/cpp/string/byte/strtoul
[[nodiscard]] constexpr auto strtoull(char const* str, char const** last, int base) noexcept -> unsigned long long
{
    auto const res = strings::to_integer<unsigned long long>(str, static_cast<unsigned long long>(base));
    if (last != nullptr) {
        *last = res.end;
    }
    return res.value;
}
 
} // namespace etl
 
#endif // TETL_CSTDLIB_STRTOUL_HPP