chromium/third_party/libc++/src/include/__random/subtract_with_carry_engine.h

//===----------------------------------------------------------------------===//
//
// 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_SUBTRACT_WITH_CARRY_ENGINE_H
#define _LIBCPP___RANDOM_SUBTRACT_WITH_CARRY_ENGINE_H

#include <__algorithm/equal.h>
#include <__algorithm/min.h>
#include <__config>
#include <__random/is_seed_sequence.h>
#include <__random/linear_congruential_engine.h>
#include <cstddef>
#include <cstdint>
#include <iosfwd>
#include <limits>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

_LIBCPP_PUSH_MACROS
#include <__undef_macros>

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _UIntType, size_t __w, size_t __s, size_t __r>
class _LIBCPP_TEMPLATE_VIS subtract_with_carry_engine;

template <class _UInt, size_t _Wp, size_t _Sp, size_t _Rp>
_LIBCPP_HIDE_FROM_ABI bool operator==(const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __x,
                                      const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __y);

template <class _UInt, size_t _Wp, size_t _Sp, size_t _Rp>
_LIBCPP_HIDE_FROM_ABI bool operator!=(const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __x,
                                      const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __y);

template <class _CharT, class _Traits, class _UInt, size_t _Wp, size_t _Sp, size_t _Rp>
_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __x);

template <class _CharT, class _Traits, class _UInt, size_t _Wp, size_t _Sp, size_t _Rp>
_LIBCPP_HIDE_FROM_ABI basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __x);

template <class _UIntType, size_t __w, size_t __s, size_t __r>
class _LIBCPP_TEMPLATE_VIS subtract_with_carry_engine { … };

template <class _UIntType, size_t __w, size_t __s, size_t __r>
_LIBCPP_CONSTEXPR const size_t subtract_with_carry_engine<_UIntType, __w, __s, __r>::word_size;

template <class _UIntType, size_t __w, size_t __s, size_t __r>
_LIBCPP_CONSTEXPR const size_t subtract_with_carry_engine<_UIntType, __w, __s, __r>::short_lag;

template <class _UIntType, size_t __w, size_t __s, size_t __r>
_LIBCPP_CONSTEXPR const size_t subtract_with_carry_engine<_UIntType, __w, __s, __r>::long_lag;

template <class _UIntType, size_t __w, size_t __s, size_t __r>
_LIBCPP_CONSTEXPR const typename subtract_with_carry_engine<_UIntType, __w, __s, __r>::result_type
    subtract_with_carry_engine<_UIntType, __w, __s, __r>::default_seed;

template <class _UIntType, size_t __w, size_t __s, size_t __r>
void subtract_with_carry_engine<_UIntType, __w, __s, __r>::seed(result_type __sd, integral_constant<unsigned, 1>) { … }

template <class _UIntType, size_t __w, size_t __s, size_t __r>
void subtract_with_carry_engine<_UIntType, __w, __s, __r>::seed(result_type __sd, integral_constant<unsigned, 2>) { … }

template <class _UIntType, size_t __w, size_t __s, size_t __r>
template <class _Sseq>
void subtract_with_carry_engine<_UIntType, __w, __s, __r>::__seed(_Sseq& __q, integral_constant<unsigned, 1>) { … }

template <class _UIntType, size_t __w, size_t __s, size_t __r>
template <class _Sseq>
void subtract_with_carry_engine<_UIntType, __w, __s, __r>::__seed(_Sseq& __q, integral_constant<unsigned, 2>) { … }

template <class _UIntType, size_t __w, size_t __s, size_t __r>
_UIntType subtract_with_carry_engine<_UIntType, __w, __s, __r>::operator()() { … }

template <class _UInt, size_t _Wp, size_t _Sp, size_t _Rp>
_LIBCPP_HIDE_FROM_ABI bool operator==(const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __x,
                                      const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __y) { … }

template <class _UInt, size_t _Wp, size_t _Sp, size_t _Rp>
inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __x,
                                             const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __y) { … }

template <class _CharT, class _Traits, class _UInt, size_t _Wp, size_t _Sp, size_t _Rp>
_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __x) { … }

template <class _CharT, class _Traits, class _UInt, size_t _Wp, size_t _Sp, size_t _Rp>
_LIBCPP_HIDE_FROM_ABI basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, subtract_with_carry_engine<_UInt, _Wp, _Sp, _Rp>& __x) { … }

_LIBCPP_END_NAMESPACE_STD

_LIBCPP_POP_MACROS

#endif // _LIBCPP___RANDOM_SUBTRACT_WITH_CARRY_ENGINE_H