mirror of
https://github.com/reactos/reactos.git
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247 lines
7.6 KiB
C
247 lines
7.6 KiB
C
/*
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*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Copyright (c) 1996,1997
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* Silicon Graphics Computer Systems, Inc.
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*
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* Copyright (c) 1997
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* Moscow Center for SPARC Technology
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*
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* Copyright (c) 1999
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* Boris Fomitchev
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*
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* This material is provided "as is", with absolutely no warranty expressed
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* or implied. Any use is at your own risk.
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*
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* Permission to use or copy this software for any purpose is hereby granted
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* without fee, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*
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*/
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#ifndef _STLP_HEAP_C
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#define _STLP_HEAP_C
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#ifndef _STLP_INTERNAL_HEAP_H
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# include <stl/_heap.h>
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#endif
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#ifndef _STLP_INTERNAL_ITERATOR_BASE_H
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# include <stl/_iterator_base.h>
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#endif
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_STLP_BEGIN_NAMESPACE
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template <class _RandomAccessIterator, class _Distance, class _Tp>
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_STLP_INLINE_LOOP
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void
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__push_heap(_RandomAccessIterator __first,
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_Distance __holeIndex, _Distance __topIndex, _Tp __val)
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{
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_Distance __parent = (__holeIndex - 1) / 2;
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while (__holeIndex > __topIndex && *(__first + __parent) < __val) {
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*(__first + __holeIndex) = *(__first + __parent);
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__holeIndex = __parent;
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__parent = (__holeIndex - 1) / 2;
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}
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*(__first + __holeIndex) = __val;
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}
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template <class _RandomAccessIterator, class _Distance, class _Tp>
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inline void
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__push_heap_aux(_RandomAccessIterator __first,
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_RandomAccessIterator __last, _Distance*, _Tp*)
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{
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__push_heap(__first, _Distance((__last - __first) - 1), _Distance(0),
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_Tp(*(__last - 1)));
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}
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template <class _RandomAccessIterator>
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void
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push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
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{
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__push_heap_aux(__first, __last,
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_STLP_DISTANCE_TYPE(__first, _RandomAccessIterator), _STLP_VALUE_TYPE(__first, _RandomAccessIterator));
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}
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template <class _RandomAccessIterator, class _Distance, class _Tp,
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class _Compare>
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_STLP_INLINE_LOOP
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void
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__push_heap(_RandomAccessIterator __first, _Distance __holeIndex,
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_Distance __topIndex, _Tp __val, _Compare __comp)
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{
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_Distance __parent = (__holeIndex - 1) / 2;
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while (__holeIndex > __topIndex && __comp(*(__first + __parent), __val)) {
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_STLP_VERBOSE_ASSERT(!__comp(__val, *(__first + __parent)), _StlMsg_INVALID_STRICT_WEAK_PREDICATE)
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*(__first + __holeIndex) = *(__first + __parent);
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__holeIndex = __parent;
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__parent = (__holeIndex - 1) / 2;
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}
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*(__first + __holeIndex) = __val;
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}
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template <class _RandomAccessIterator, class _Compare,
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class _Distance, class _Tp>
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inline void
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__push_heap_aux(_RandomAccessIterator __first,
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_RandomAccessIterator __last, _Compare __comp,
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_Distance*, _Tp*)
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{
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__push_heap(__first, _Distance((__last - __first) - 1), _Distance(0),
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_Tp(*(__last - 1)), __comp);
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}
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template <class _RandomAccessIterator, class _Compare>
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void
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push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
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_Compare __comp)
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{
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__push_heap_aux(__first, __last, __comp,
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_STLP_DISTANCE_TYPE(__first, _RandomAccessIterator), _STLP_VALUE_TYPE(__first, _RandomAccessIterator));
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}
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template <class _RandomAccessIterator, class _Distance, class _Tp>
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void
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__adjust_heap(_RandomAccessIterator __first, _Distance __holeIndex,
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_Distance __len, _Tp __val) {
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_Distance __topIndex = __holeIndex;
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_Distance __secondChild = 2 * __holeIndex + 2;
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while (__secondChild < __len) {
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if (*(__first + __secondChild) < *(__first + (__secondChild - 1)))
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__secondChild--;
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*(__first + __holeIndex) = *(__first + __secondChild);
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__holeIndex = __secondChild;
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__secondChild = 2 * (__secondChild + 1);
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}
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if (__secondChild == __len) {
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*(__first + __holeIndex) = *(__first + (__secondChild - 1));
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__holeIndex = __secondChild - 1;
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}
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__push_heap(__first, __holeIndex, __topIndex, __val);
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}
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template <class _RandomAccessIterator, class _Tp>
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inline void
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__pop_heap_aux(_RandomAccessIterator __first, _RandomAccessIterator __last, _Tp*) {
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__pop_heap(__first, __last - 1, __last - 1,
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_Tp(*(__last - 1)), _STLP_DISTANCE_TYPE(__first, _RandomAccessIterator));
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}
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template <class _RandomAccessIterator>
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void pop_heap(_RandomAccessIterator __first,
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_RandomAccessIterator __last) {
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__pop_heap_aux(__first, __last, _STLP_VALUE_TYPE(__first, _RandomAccessIterator));
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}
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template <class _RandomAccessIterator, class _Distance,
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class _Tp, class _Compare>
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void
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__adjust_heap(_RandomAccessIterator __first, _Distance __holeIndex,
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_Distance __len, _Tp __val, _Compare __comp)
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{
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_Distance __topIndex = __holeIndex;
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_Distance __secondChild = 2 * __holeIndex + 2;
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while (__secondChild < __len) {
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if (__comp(*(__first + __secondChild), *(__first + (__secondChild - 1)))) {
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_STLP_VERBOSE_ASSERT(!__comp(*(__first + (__secondChild - 1)), *(__first + __secondChild)),
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_StlMsg_INVALID_STRICT_WEAK_PREDICATE)
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__secondChild--;
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}
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*(__first + __holeIndex) = *(__first + __secondChild);
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__holeIndex = __secondChild;
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__secondChild = 2 * (__secondChild + 1);
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}
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if (__secondChild == __len) {
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*(__first + __holeIndex) = *(__first + (__secondChild - 1));
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__holeIndex = __secondChild - 1;
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}
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__push_heap(__first, __holeIndex, __topIndex, __val, __comp);
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}
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template <class _RandomAccessIterator, class _Tp, class _Compare>
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inline void
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__pop_heap_aux(_RandomAccessIterator __first,
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_RandomAccessIterator __last, _Tp*, _Compare __comp)
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{
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__pop_heap(__first, __last - 1, __last - 1, _Tp(*(__last - 1)), __comp,
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_STLP_DISTANCE_TYPE(__first, _RandomAccessIterator));
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}
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template <class _RandomAccessIterator, class _Compare>
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void
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pop_heap(_RandomAccessIterator __first,
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_RandomAccessIterator __last, _Compare __comp)
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{
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__pop_heap_aux(__first, __last, _STLP_VALUE_TYPE(__first, _RandomAccessIterator), __comp);
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}
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template <class _RandomAccessIterator, class _Tp, class _Distance>
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_STLP_INLINE_LOOP
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void
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__make_heap(_RandomAccessIterator __first,
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_RandomAccessIterator __last, _Tp*, _Distance*)
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{
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if (__last - __first < 2) return;
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_Distance __len = __last - __first;
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_Distance __parent = (__len - 2)/2;
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for (;;) {
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__adjust_heap(__first, __parent, __len, _Tp(*(__first + __parent)));
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if (__parent == 0) return;
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__parent--;
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}
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}
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template <class _RandomAccessIterator>
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void
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make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
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{
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__make_heap(__first, __last,
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_STLP_VALUE_TYPE(__first, _RandomAccessIterator), _STLP_DISTANCE_TYPE(__first, _RandomAccessIterator));
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}
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template <class _RandomAccessIterator, class _Compare,
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class _Tp, class _Distance>
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_STLP_INLINE_LOOP
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void
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__make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last,
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_Compare __comp, _Tp*, _Distance*)
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{
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if (__last - __first < 2) return;
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_Distance __len = __last - __first;
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_Distance __parent = (__len - 2)/2;
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for (;;) {
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__adjust_heap(__first, __parent, __len, _Tp(*(__first + __parent)),
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__comp);
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if (__parent == 0) return;
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__parent--;
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}
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}
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template <class _RandomAccessIterator, class _Compare>
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void
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make_heap(_RandomAccessIterator __first,
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_RandomAccessIterator __last, _Compare __comp)
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{
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__make_heap(__first, __last, __comp,
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_STLP_VALUE_TYPE(__first, _RandomAccessIterator), _STLP_DISTANCE_TYPE(__first, _RandomAccessIterator));
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}
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_STLP_END_NAMESPACE
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#endif /* _STLP_HEAP_C */
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// Local Variables:
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// mode:C++
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// End:
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