is_integral.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2021 Tobias Hienzsch
 
#ifndef TETL_TYPE_TRAITS_IS_INTEGRAL_HPP
#define TETL_TYPE_TRAITS_IS_INTEGRAL_HPP
 
#include <etl/_type_traits/bool_constant.hpp>
 
#if __has_builtin(__is_integral)
namespace etl {
 
template <typename T>
struct is_integral : bool_constant<__is_integral(T)> { };
 
template <typename T>
 
inline constexpr bool is_integral_v = __is_integral(T);
 
} // namespace etl
 
#else
 
    #include <etl/_mpl/contains.hpp>
    #include <etl/_type_traits/remove_cv.hpp>
 
namespace etl {
 
template <typename T>
inline constexpr bool is_integral_v = mpl::contains_v<
    remove_cv_t<T>,
    mpl::list<
        bool,
        char,
        signed char,
        unsigned char,
        wchar_t,
        char8_t,
        char16_t,
        char32_t,
        short,
        unsigned short,
        int,
        unsigned int,
        long,
        unsigned long,
        long long,
        unsigned long long
    >
>;
 
template <typename T>
struct is_integral : bool_constant<is_integral_v<T> > { };
 
} // namespace etl
 
#endif
 
#endif // TETL_TYPE_TRAITS_IS_INTEGRAL_HPP