wcsncmp.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2020 Tobias Hienzsch
 
#ifndef TETL_CWCHAR_WCSNCMP_HPP
#define TETL_CWCHAR_WCSNCMP_HPP
 
#include <etl/_cstddef/size_t.hpp>
#include <etl/_strings/cstr.hpp>
 
namespace etl {
 
/// \brief Compares at most count wide characters of two null-terminated wide
/// strings. The comparison is done lexicographically.
///
/// \details The sign of the result is the sign of the difference between the
/// values of the first pair of wide characters that differ in the strings being
/// compared.
///
/// The behavior is undefined if lhs or rhs are not pointers to null-terminated
/// strings.
[[nodiscard]] constexpr auto wcsncmp(wchar_t const* lhs, wchar_t const* rhs, etl::size_t count) -> int
{
    return etl::detail::strncmp<wchar_t, etl::size_t>(lhs, rhs, count);
}
 
} // namespace etl
#endif // TETL_CWCHAR_WCSNCMP_HPP