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https://github.com/jart/cosmopolitan.git
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69 lines
1.2 KiB
C++
69 lines
1.2 KiB
C++
// -*-mode:c++;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8-*-
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// vi: set et ft=cpp ts=4 sts=4 sw=4 fenc=utf-8 :vi
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#ifndef COSMOPOLITAN_CTL_UTILITY_H_
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#define COSMOPOLITAN_CTL_UTILITY_H_
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#include "remove_reference.h"
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namespace ctl {
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namespace __ {
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template<typename T>
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struct no_infer_
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{
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typedef T type;
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};
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template<typename T>
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using no_infer = typename no_infer_<T>::type;
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} // namespace __
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template<typename T>
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constexpr T&&
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move(T&& t) noexcept
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{
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typedef remove_reference_t<T> U;
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return static_cast<U&&>(t);
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}
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template<typename T>
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constexpr T&&
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move(T& t) noexcept
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{
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return static_cast<T&&>(t);
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}
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template<typename T>
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constexpr T&&
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forward(__::no_infer<T>& t) noexcept
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{
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return static_cast<T&&>(t);
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}
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template<typename T>
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// TODO(mrdomino): requires move_constructible<T> && move_assignable<T>
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constexpr void
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swap(T& a, T& b) noexcept
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{
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T t(ctl::move(a));
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a = ctl::move(b);
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b = ctl::move(t);
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}
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template<typename T, size_t N>
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// TODO(mrdomino): requires is_swappable
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constexpr void
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swap(T (&a)[N], T (&b)[N]) noexcept
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{
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for (size_t i = 0; i < N; ++i)
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swap(a[i], b[i]);
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}
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template<typename T>
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T&&
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declval() noexcept;
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} // namespace ctl
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#endif // COSMOPOLITAN_CTL_UTILITY_H_
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