Louis Dionne 9783f28cbb
[libc++] Format the code base (#74334)
This patch runs clang-format on all of libcxx/include and libcxx/src, in
accordance with the RFC discussed at [1]. Follow-up patches will format
the benchmarks, the test suite and remaining parts of the code. I'm
splitting this one into its own patch so the diff is a bit easier to
review.

This patch was generated with:

   find libcxx/include libcxx/src -type f \
      | grep -v 'module.modulemap.in' \
      | grep -v 'CMakeLists.txt' \
      | grep -v 'README.txt' \
      | grep -v 'libcxx.imp' \
      | grep -v '__config_site.in' \
      | xargs clang-format -i

A Git merge driver is available in libcxx/utils/clang-format-merge-driver.sh
to help resolve merge and rebase issues across these formatting changes.

[1]: https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all
2023-12-18 14:01:33 -05:00

82 lines
2.3 KiB
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___RANDOM_RANDOM_DEVICE_H
#define _LIBCPP___RANDOM_RANDOM_DEVICE_H
#include <__config>
#include <string>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if !defined(_LIBCPP_HAS_NO_RANDOM_DEVICE)
class _LIBCPP_EXPORTED_FROM_ABI random_device {
# ifdef _LIBCPP_USING_DEV_RANDOM
int __f_;
# elif !defined(_LIBCPP_ABI_NO_RANDOM_DEVICE_COMPATIBILITY_LAYOUT)
_LIBCPP_DIAGNOSTIC_PUSH
_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wunused-private-field")
// Apple platforms used to use the `_LIBCPP_USING_DEV_RANDOM` code path, and now
// use `arc4random()` as of this comment. In order to avoid breaking the ABI, we
// retain the same layout as before.
# if defined(__APPLE__)
int __padding_; // padding to fake the `__f_` field above
# endif
// ... vendors can add workarounds here if they switch to a different representation ...
_LIBCPP_DIAGNOSTIC_POP
# endif
public:
// types
typedef unsigned result_type;
// generator characteristics
static _LIBCPP_CONSTEXPR const result_type _Min = 0;
static _LIBCPP_CONSTEXPR const result_type _Max = 0xFFFFFFFFu;
_LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR result_type min() { return _Min; }
_LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR result_type max() { return _Max; }
// constructors
# ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI random_device() : random_device("/dev/urandom") {}
explicit random_device(const string& __token);
# else
explicit random_device(const string& __token = "/dev/urandom");
# endif
~random_device();
// generating functions
result_type operator()();
// property functions
double entropy() const _NOEXCEPT;
random_device(const random_device&) = delete;
void operator=(const random_device&) = delete;
};
#endif // !_LIBCPP_HAS_NO_RANDOM_DEVICE
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___RANDOM_RANDOM_DEVICE_H