iswalpha.hpp

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// SPDX-License-Identifier: BSL-1.0
 
#ifndef TETL_CWCTYPE_ISWALPHA_HPP
#define TETL_CWCTYPE_ISWALPHA_HPP
 
#include <etl/_cwchar/wint_t.hpp>
 
namespace etl {
[[nodiscard]] constexpr auto iswalpha(wint_t ch) noexcept -> int
{
    auto isLower = ch >= L'a' && ch <= L'z';
    auto isUpper = ch >= L'A' && ch <= L'Z';
    return static_cast<int>(isLower || isUpper);
}
} // namespace etl
 
#endif // TETL_CWCTYPE_ISWALPHA_HPP