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//===-- Analogous to <utility> ----------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC_SUPPORT_CPP_UTILITY_H
#define LLVM_LIBC_SRC_SUPPORT_CPP_UTILITY_H
#include "src/__support/CPP/type_traits.h"
#include "src/__support/macros/attributes.h"
namespace __llvm_libc::cpp {
template <typename T, T... Ints> struct integer_sequence {
static_assert(is_integral_v<T>);
template <T Next> using append = integer_sequence<T, Ints..., Next>;
};
namespace internal {
template <typename T, int N> struct make_integer_sequence {
using type =
typename make_integer_sequence<T, N - 1>::type::template append<N>;
};
template <typename T> struct make_integer_sequence<T, -1> {
using type = integer_sequence<T>;
};
} // namespace internal
template <typename T, int N>
using make_integer_sequence =
typename internal::make_integer_sequence<T, N - 1>::type;
template <typename T>
LIBC_INLINE constexpr T &&forward(typename remove_reference<T>::type &value) {
return static_cast<T &&>(value);
}
template <typename T>
LIBC_INLINE constexpr T &&forward(typename remove_reference<T>::type &&value) {
return static_cast<T &&>(value);
}
template <typename T>
LIBC_INLINE constexpr typename remove_reference<T>::type &&move(T &&value) {
return static_cast<typename remove_reference<T>::type &&>(value);
}
} // namespace __llvm_libc::cpp
#endif // LLVM_LIBC_SRC_SUPPORT_CPP_UTILITY_H
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