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- // -*- 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 _LIBCPP_BIT
- #define _LIBCPP_BIT
- /*
- bit synopsis
- namespace std {
- // [bit.cast], bit_cast
- template<class To, class From>
- constexpr To bit_cast(const From& from) noexcept; // C++20
- // [bit.byteswap], byteswap
- template<class T>
- constexpr T byteswap(T value) noexcept; // C++23
- // [bit.pow.two], integral powers of 2
- template <class T>
- constexpr bool has_single_bit(T x) noexcept; // C++20
- template <class T>
- constexpr T bit_ceil(T x); // C++20
- template <class T>
- constexpr T bit_floor(T x) noexcept; // C++20
- template <class T>
- constexpr int bit_width(T x) noexcept; // C++20
- // [bit.rotate], rotating
- template<class T>
- constexpr T rotl(T x, int s) noexcept; // C++20
- template<class T>
- constexpr T rotr(T x, int s) noexcept; // C++20
- // [bit.count], counting
- template<class T>
- constexpr int countl_zero(T x) noexcept; // C++20
- template<class T>
- constexpr int countl_one(T x) noexcept; // C++20
- template<class T>
- constexpr int countr_zero(T x) noexcept; // C++20
- template<class T>
- constexpr int countr_one(T x) noexcept; // C++20
- template<class T>
- constexpr int popcount(T x) noexcept; // C++20
- // [bit.endian], endian
- enum class endian {
- little = see below, // C++20
- big = see below, // C++20
- native = see below // C++20
- };
- } // namespace std
- */
- #include <__assert> // all public C++ headers provide the assertion handler
- #include <__bit/bit_cast.h>
- #include <__bit/bit_ceil.h>
- #include <__bit/bit_floor.h>
- #include <__bit/bit_log2.h>
- #include <__bit/bit_width.h>
- #include <__bit/blsr.h>
- #include <__bit/byteswap.h>
- #include <__bit/countl.h>
- #include <__bit/countr.h>
- #include <__bit/endian.h>
- #include <__bit/has_single_bit.h>
- #include <__bit/popcount.h>
- #include <__bit/rotate.h>
- #include <__config>
- #include <version>
- #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
- # pragma GCC system_header
- #endif
- #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
- # include <cstdlib>
- # include <iosfwd>
- # include <limits>
- # include <type_traits>
- #endif
- #endif // _LIBCPP_BIT
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