_heap.h

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/*
 *
 * 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) 1997
 * Silicon Graphics Computer Systems, Inc.
 *
 * 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 _STLP_INTERNAL_HEAP_H
#define _STLP_INTERNAL_HEAP_H
 
_STLP_BEGIN_NAMESPACE
 
// Heap-manipulation functions: push_heap, pop_heap, make_heap, sort_heap.
 
template <class _RandomAccessIterator>
void
push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last);
 
 
template <class _RandomAccessIterator, class _Compare>
void
push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
          _Compare __comp);
 
template <class _RandomAccessIterator, class _Distance, class _Tp>
void
__adjust_heap(_RandomAccessIterator __first, _Distance __holeIndex,
              _Distance __len, _Tp __val);
 
template <class _RandomAccessIterator, class _Tp, class _Distance>
inline void
__pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
           _RandomAccessIterator __result, _Tp __val, _Distance*)
{
  *__result = *__first;
  __adjust_heap(__first, _Distance(0), _Distance(__last - __first), __val);
}
 
template <class _RandomAccessIterator>
void pop_heap(_RandomAccessIterator __first,
        _RandomAccessIterator __last);
 
template <class _RandomAccessIterator, class _Distance,
          class _Tp, class _Compare>
void
__adjust_heap(_RandomAccessIterator __first, _Distance __holeIndex,
              _Distance __len, _Tp __val, _Compare __comp);
 
template <class _RandomAccessIterator, class _Tp, class _Compare,
          class _Distance>
inline void
__pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
           _RandomAccessIterator __result, _Tp __val, _Compare __comp,
           _Distance*)
{
  *__result = *__first;
  __adjust_heap(__first, _Distance(0), _Distance(__last - __first),
                __val, __comp);
}
 
template <class _RandomAccessIterator, class _Compare>
void
pop_heap(_RandomAccessIterator __first,
         _RandomAccessIterator __last, _Compare __comp);
 
template <class _RandomAccessIterator>
void
make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last);
 
template <class _RandomAccessIterator, class _Compare>
void
make_heap(_RandomAccessIterator __first,
          _RandomAccessIterator __last, _Compare __comp);
 
template <class _RandomAccessIterator>
_STLP_INLINE_LOOP
void sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
  while (__last - __first > 1)
    pop_heap(__first, __last--);
}
 
template <class _RandomAccessIterator, class _Compare>
_STLP_INLINE_LOOP
void
sort_heap(_RandomAccessIterator __first,
          _RandomAccessIterator __last, _Compare __comp)
{
  while (__last - __first > 1)
    pop_heap(__first, __last--, __comp);
}
 
_STLP_END_NAMESPACE
 
# if !defined (_STLP_LINK_TIME_INSTANTIATION)
#  include <stl/_heap.c>
# endif
 
#endif /* _STLP_INTERNAL_HEAP_H */
 
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