windows-nt/Source/XPSP1/NT/base/crts/crtw32/stdhpp/utility

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2020-09-26 03:20:57 -05:00
// utility standard header
#pragma once
#ifndef _UTILITY_
#define _UTILITY_
#include <iosfwd>
#pragma pack(push,8)
#pragma warning(push,3)
_STD_BEGIN
// TEMPLATE FUNCTION swap (from <algorithm>)
template<class _Ty> inline
void swap(_Ty& _Left, _Ty& _Right)
{ // exchange values stored at _Left and _Right
_Ty _Tmp = _Left;
_Left = _Right, _Right = _Tmp;
}
// TEMPLATE STRUCT pair
template<class _Ty1,
class _Ty2> struct pair
{ // store a pair of values
typedef pair<_Ty1, _Ty2> _Myt;
typedef _Ty1 first_type;
typedef _Ty2 second_type;
pair()
: first(_Ty1()), second(_Ty2())
{ // construct from defaults
}
pair(const _Ty1& _Val1, const _Ty2& _Val2)
: first(_Val1), second(_Val2)
{ // construct from specified values
}
template<class _Other1,
class _Other2>
pair(const pair<_Other1, _Other2>& _Right)
: first(_Right.first), second(_Right.second)
{ // construct from compatible pair
}
void swap(_Myt& _Right)
{ // exchange contents with _Right
std::swap(first, _Right.first);
std::swap(second, _Right.second);
}
friend void swap(_Myt& _Left, _Myt& _Right)
{ // swap _Left and _Right deques
_Left.swap(_Right);
}
_Ty1 first; // the first stored value
_Ty2 second; // the second stored value
};
// pair TEMPLATE OPERATORS
template<class _Ty1,
class _Ty2> inline
bool __cdecl operator==(const pair<_Ty1, _Ty2>& _Left,
const pair<_Ty1, _Ty2>& _Right)
{ // test for pair equality
return (_Left.first == _Right.first && _Left.second == _Right.second);
}
template<class _Ty1,
class _Ty2> inline
bool __cdecl operator!=(const pair<_Ty1, _Ty2>& _Left,
const pair<_Ty1, _Ty2>& _Right)
{ // test for pair inequality
return (!(_Left == _Right));
}
template<class _Ty1,
class _Ty2> inline
bool __cdecl operator<(const pair<_Ty1, _Ty2>& _Left,
const pair<_Ty1, _Ty2>& _Right)
{ // test if _Left < _Right for pairs
return (_Left.first < _Right.first ||
!(_Right.first < _Left.first) && _Left.second < _Right.second);
}
template<class _Ty1,
class _Ty2> inline
bool __cdecl operator>(const pair<_Ty1, _Ty2>& _Left,
const pair<_Ty1, _Ty2>& _Right)
{ // test if _Left > _Right for pairs
return (_Right < _Left);
}
template<class _Ty1,
class _Ty2> inline
bool __cdecl operator<=(const pair<_Ty1, _Ty2>& _Left,
const pair<_Ty1, _Ty2>& _Right)
{ // test if _Left <= _Right for pairs
return (!(_Right < _Left));
}
template<class _Ty1,
class _Ty2> inline
bool __cdecl operator>=(const pair<_Ty1, _Ty2>& _Left,
const pair<_Ty1, _Ty2>& _Right)
{ // test if _Left >= _Right for pairs
return (!(_Left < _Right));
}
template<class _Ty1,
class _Ty2> inline
pair<_Ty1, _Ty2> __cdecl make_pair(_Ty1 _Val1, _Ty2 _Val2)
{ // return pair composed from arguments
return (pair<_Ty1, _Ty2>(_Val1, _Val2));
}
// TEMPLATE OPERATORS
namespace rel_ops
{ // nested namespace to hide relational operators from std
template<class _Ty> inline
bool __cdecl operator!=(const _Ty& _Left, const _Ty& _Right)
{ // test for inequality, in terms of equality
return (!(_Left == _Right));
}
template<class _Ty> inline
bool __cdecl operator>(const _Ty& _Left, const _Ty& _Right)
{ // test if _Left > _Right, in terms of operator<
return (_Right < _Left);
}
template<class _Ty> inline
bool __cdecl operator<=(const _Ty& _Left, const _Ty& _Right)
{ // test if _Left <= _Right, in terms of operator<
return (!(_Right < _Left));
}
template<class _Ty> inline
bool __cdecl operator>=(const _Ty& _Left, const _Ty& _Right)
{ // test if _Left >= _Right, in terms of operator<
return (!(_Left < _Right));
}
}
_STD_END
#pragma warning(pop)
#pragma pack(pop)
#endif /* _UTILITY_ */
/*
* Copyright (c) 1992-2001 by P.J. Plauger. ALL RIGHTS RESERVED.
* Consult your license regarding permissions and restrictions.
*/
/*
* This file is derived from software bearing the following
* restrictions:
*
* Copyright (c) 1994
* Hewlett-Packard Company
*
* Permission to use, copy, modify, distribute and sell this
* software and its documentation for any purpose is hereby
* granted without fee, provided that the above copyright notice
* appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation.
* Hewlett-Packard Company makes no representations about the
* suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
V3.10:0009 */