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Partial cleanup of util/lp/*

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This commit is contained in:
Christoph M. Wintersteiger 2017-09-17 16:00:06 +01:00
parent 00651f8f21
commit d61b722b68
109 changed files with 3503 additions and 2023 deletions
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48
src/util/lp/binary_heap_priority_queue.hpp
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@ -1,11 +1,26 @@
/*
Copyright (c) 2017 Microsoft Corporation
Author: Lev Nachmanson
*/
/*++
Copyright (c) 2017 Microsoft Corporation
Module Name:
<name>
Abstract:
<abstract>
Author:
Lev Nachmanson (levnach)
Revision History:
--*/
#include "util/vector.h"
#include "util/lp/binary_heap_priority_queue.h"
namespace lean {
// is is the child place in heap
namespace lp {
// this is the child place in the heap
template <typename T> void binary_heap_priority_queue<T>::swap_with_parent(unsigned i) {
unsigned parent = m_heap[i >> 1];
put_at(i >> 1, m_heap[i]);
@ -29,12 +44,12 @@ template <typename T> void binary_heap_priority_queue<T>::decrease_priority(unsi
}
}
#ifdef LEAN_DEBUG
#ifdef Z3DEBUG
template <typename T> bool binary_heap_priority_queue<T>::is_consistent() const {
for (int i = 0; i < m_heap_inverse.size(); i++) {
int i_index = m_heap_inverse[i];
lean_assert(i_index <= static_cast<int>(m_heap_size));
lean_assert(i_index == -1 || m_heap[i_index] == i);
SASSERT(i_index <= static_cast<int>(m_heap_size));
SASSERT(i_index == -1 || m_heap[i_index] == i);
}
for (unsigned i = 1; i < m_heap_size; i++) {
unsigned ch = i << 1;
@ -49,13 +64,14 @@ template <typename T> bool binary_heap_priority_queue<T>::is_consistent() const
return true;
}
#endif
template <typename T> void binary_heap_priority_queue<T>::remove(unsigned o) {
T priority_of_o = m_priorities[o];
int o_in_heap = m_heap_inverse[o];
if (o_in_heap == -1) {
return; // nothing to do
}
lean_assert(static_cast<unsigned>(o_in_heap) <= m_heap_size);
SASSERT(static_cast<unsigned>(o_in_heap) <= m_heap_size);
if (static_cast<unsigned>(o_in_heap) < m_heap_size) {
put_at(o_in_heap, m_heap[m_heap_size--]);
if (m_priorities[m_heap[o_in_heap]] > priority_of_o) {
@ -72,11 +88,11 @@ template <typename T> void binary_heap_priority_queue<T>::remove(unsigned o) {
}
}
} else {
lean_assert(static_cast<unsigned>(o_in_heap) == m_heap_size);
SASSERT(static_cast<unsigned>(o_in_heap) == m_heap_size);
m_heap_size--;
}
m_heap_inverse[o] = -1;
// lean_assert(is_consistent());
// SASSERT(is_consistent());
}
// n is the initial queue capacity.
// The capacity will be enlarged two times automatically if needed
@ -102,7 +118,7 @@ template <typename T> void binary_heap_priority_queue<T>::put_to_heap(unsigned i
template <typename T> void binary_heap_priority_queue<T>::enqueue_new(unsigned o, const T& priority) {
m_heap_size++;
int i = m_heap_size;
lean_assert(o < m_priorities.size());
SASSERT(o < m_priorities.size());
m_priorities[o] = priority;
put_at(i, o);
while (i > 1 && m_priorities[m_heap[i >> 1]] > priority) {
@ -134,7 +150,7 @@ template <typename T> void binary_heap_priority_queue<T>::change_priority_for_ex
/// return the first element of the queue and removes it from the queue
template <typename T> unsigned binary_heap_priority_queue<T>::dequeue_and_get_priority(T & priority) {
lean_assert(m_heap_size != 0);
SASSERT(m_heap_size != 0);
int ret = m_heap[1];
priority = m_priorities[ret];
put_the_last_at_the_top_and_fix_the_heap();
@ -168,13 +184,13 @@ template <typename T> void binary_heap_priority_queue<T>::put_the_last_at_the_to
}
/// return the first element of the queue and removes it from the queue
template <typename T> unsigned binary_heap_priority_queue<T>::dequeue() {
lean_assert(m_heap_size > 0);
SASSERT(m_heap_size > 0);
int ret = m_heap[1];
put_the_last_at_the_top_and_fix_the_heap();
m_heap_inverse[ret] = -1;
return ret;
}
#ifdef LEAN_DEBUG
#ifdef Z3DEBUG
template <typename T> void binary_heap_priority_queue<T>::print(std::ostream & out) {
vector<int> index;
vector<T> prs;