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diff --git a/src/prop/minisat/mtl/BasicHeap.h b/src/prop/minisat/mtl/BasicHeap.h
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-/******************************************************************************************[Heap.h]
-MiniSat -- Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
-associated documentation files (the "Software"), to deal in the Software without restriction,
-including without limitation the rights to use, copy, modify, merge, publish, distribute,
-sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or
-substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
-NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
-OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-**************************************************************************************************/
-
-#include "cvc4_private.h"
-
-#ifndef CVC4_MiniSat_BasicHeap_h
-#define CVC4_MiniSat_BasicHeap_h
-
-#include "Vec.h"
-
-namespace CVC4 {
-namespace prop {
-namespace minisat {
-
-//=================================================================================================
-// A heap implementation with support for decrease/increase key.
-
-
-template<class Comp>
-class BasicHeap {
- Comp lt;
- vec<int> heap; // heap of ints
-
- // Index "traversal" functions
- static inline int left (int i) { return i*2+1; }
- static inline int right (int i) { return (i+1)*2; }
- static inline int parent(int i) { return (i-1) >> 1; }
-
- inline void percolateUp(int i)
- {
- int x = heap[i];
- while (i != 0 && lt(x, heap[parent(i)])){
- heap[i] = heap[parent(i)];
- i = parent(i);
- }
- heap [i] = x;
- }
-
-
- inline void percolateDown(int i)
- {
- int x = heap[i];
- while (left(i) < heap.size()){
- int child = right(i) < heap.size() && lt(heap[right(i)], heap[left(i)]) ? right(i) : left(i);
- if (!lt(heap[child], x)) break;
- heap[i] = heap[child];
- i = child;
- }
- heap[i] = x;
- }
-
-
- bool heapProperty(int i) {
- return i >= heap.size()
- || ((i == 0 || !lt(heap[i], heap[parent(i)])) && heapProperty(left(i)) && heapProperty(right(i))); }
-
-
- public:
- BasicHeap(const C& c) : comp(c) { }
-
- int size () const { return heap.size(); }
- bool empty () const { return heap.size() == 0; }
- int operator[](int index) const { return heap[index+1]; }
- void clear (bool dealloc = false) { heap.clear(dealloc); }
- void insert (int n) { heap.push(n); percolateUp(heap.size()-1); }
-
-
- int removeMin() {
- int r = heap[0];
- heap[0] = heap.last();
- heap.pop();
- if (heap.size() > 1) percolateDown(0);
- return r;
- }
-
-
- // DEBUG: consistency checking
- bool heapProperty() {
- return heapProperty(1); }
-
-
- // COMPAT: should be removed
- int getmin () { return removeMin(); }
-};
-
-
-//=================================================================================================
-
-}/* CVC4::prop::minisat namespace */
-}/* CVC4::prop namespace */
-}/* CVC4 namespace */
-
-#endif /* CVC4_MiniSat_BasicHeap_h */
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