stl_relops.h

/*
 *
 * 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.
 *
 * Copyright (c) 1996,1997
 * Silicon Graphics
 *
 * 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.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 */

/* NOTE: This is an internal header file, included by other STL headers.
 *   You should not attempt to use it directly.
 */

#ifndef __SGI_STL_INTERNAL_RELOPS
#define __SGI_STL_INTERNAL_RELOPS

__STL_BEGIN_RELOPS_NAMESPACE

//重载操作符：!=,>,<=,>=;
template <class _Tp>
inline bool operator!=(const _Tp& __x, const _Tp& __y) {
  return !(__x == __y);
}

template <class _Tp>
inline bool operator>(const _Tp& __x, const _Tp& __y) {
  return __y < __x;
}

template <class _Tp>
inline bool operator<=(const _Tp& __x, const _Tp& __y) {
  return !(__y < __x);
}

template <class _Tp>
inline bool operator>=(const _Tp& __x, const _Tp& __y) {
  return !(__x < __y);
}

__STL_END_RELOPS_NAMESPACE

#endif /* __SGI_STL_INTERNAL_RELOPS */

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