3c56437eaf
This patch does a few things: - `__libcpp_is_signed_integer` and `__libcpp_is_unsigned_integer` are refactored to be variable templates instead of class templates. - the two traits are merged into a single header `<__type_traits/integer_traits.h>`. - `__libcpp_signed_integer`, `__libcpp_unsigned_integer` and `__libcpp_integer` are moved into the same header. - The above mentioned concepts are renamed to `__signed_integer`, `__unsigned_integer` and `__signed_or_unsigned_integer` respectively.
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___UTILITY_CMP_H
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#define _LIBCPP___UTILITY_CMP_H
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#include <__config>
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#include <__type_traits/integer_traits.h>
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#include <__type_traits/is_signed.h>
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#include <__type_traits/make_unsigned.h>
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#include <limits>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER >= 20
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template <__signed_or_unsigned_integer _Tp, __signed_or_unsigned_integer _Up>
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_LIBCPP_HIDE_FROM_ABI constexpr bool cmp_equal(_Tp __t, _Up __u) noexcept {
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if constexpr (is_signed_v<_Tp> == is_signed_v<_Up>)
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return __t == __u;
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else if constexpr (is_signed_v<_Tp>)
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return __t < 0 ? false : make_unsigned_t<_Tp>(__t) == __u;
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else
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return __u < 0 ? false : __t == make_unsigned_t<_Up>(__u);
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}
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template <__signed_or_unsigned_integer _Tp, __signed_or_unsigned_integer _Up>
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_LIBCPP_HIDE_FROM_ABI constexpr bool cmp_not_equal(_Tp __t, _Up __u) noexcept {
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return !std::cmp_equal(__t, __u);
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}
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template <__signed_or_unsigned_integer _Tp, __signed_or_unsigned_integer _Up>
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_LIBCPP_HIDE_FROM_ABI constexpr bool cmp_less(_Tp __t, _Up __u) noexcept {
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if constexpr (is_signed_v<_Tp> == is_signed_v<_Up>)
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return __t < __u;
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else if constexpr (is_signed_v<_Tp>)
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return __t < 0 ? true : make_unsigned_t<_Tp>(__t) < __u;
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else
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return __u < 0 ? false : __t < make_unsigned_t<_Up>(__u);
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}
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template <__signed_or_unsigned_integer _Tp, __signed_or_unsigned_integer _Up>
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_LIBCPP_HIDE_FROM_ABI constexpr bool cmp_greater(_Tp __t, _Up __u) noexcept {
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return std::cmp_less(__u, __t);
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}
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template <__signed_or_unsigned_integer _Tp, __signed_or_unsigned_integer _Up>
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_LIBCPP_HIDE_FROM_ABI constexpr bool cmp_less_equal(_Tp __t, _Up __u) noexcept {
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return !std::cmp_greater(__t, __u);
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}
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template <__signed_or_unsigned_integer _Tp, __signed_or_unsigned_integer _Up>
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_LIBCPP_HIDE_FROM_ABI constexpr bool cmp_greater_equal(_Tp __t, _Up __u) noexcept {
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return !std::cmp_less(__t, __u);
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}
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template <__signed_or_unsigned_integer _Tp, __signed_or_unsigned_integer _Up>
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_LIBCPP_HIDE_FROM_ABI constexpr bool in_range(_Up __u) noexcept {
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return std::cmp_less_equal(__u, numeric_limits<_Tp>::max()) &&
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std::cmp_greater_equal(__u, numeric_limits<_Tp>::min());
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}
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#endif // _LIBCPP_STD_VER >= 20
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_LIBCPP_END_NAMESPACE_STD
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___UTILITY_CMP_H
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