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added minisat code base

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Tom
2019-02-08 23:07:45 +01:00
parent 0a0fbcc46d
commit 4f9ae6c67d
31 changed files with 5063 additions and 8 deletions
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84
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/*******************************************************************************************[Alg.h]
Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson
Copyright (c) 2007-2010, 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.
**************************************************************************************************/
#ifndef Minisat_Alg_h
#define Minisat_Alg_h
#include "mtl/Vec.h"
namespace Minisat {
//=================================================================================================
// Useful functions on vector-like types:
//=================================================================================================
// Removing and searching for elements:
//
template<class V, class T>
static inline void remove(V& ts, const T& t)
{
int j = 0;
for (; j < ts.size() && ts[j] != t; j++);
assert(j < ts.size());
for (; j < ts.size()-1; j++) ts[j] = ts[j+1];
ts.pop();
}
template<class V, class T>
static inline bool find(V& ts, const T& t)
{
int j = 0;
for (; j < ts.size() && ts[j] != t; j++);
return j < ts.size();
}
//=================================================================================================
// Copying vectors with support for nested vector types:
//
// Base case:
template<class T>
static inline void copy(const T& from, T& to)
{
to = from;
}
// Recursive case:
template<class T>
static inline void copy(const vec<T>& from, vec<T>& to, bool append = false)
{
if (!append)
to.clear();
for (int i = 0; i < from.size(); i++){
to.push();
copy(from[i], to.last());
}
}
template<class T>
static inline void append(const vec<T>& from, vec<T>& to){ copy(from, to, true); }
//=================================================================================================
}
#endif

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/*****************************************************************************************[Alloc.h]
Copyright (c) 2008-2010, 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.
**************************************************************************************************/
#ifndef Minisat_Alloc_h
#define Minisat_Alloc_h
#include "mtl/XAlloc.h"
#include "mtl/Vec.h"
namespace Minisat {
//=================================================================================================
// Simple Region-based memory allocator:
template<class T>
class RegionAllocator
{
T* memory;
uint32_t sz;
uint32_t cap;
uint32_t wasted_;
void capacity(uint32_t min_cap);
public:
// TODO: make this a class for better type-checking?
typedef uint32_t Ref;
enum { Ref_Undef = UINT32_MAX };
enum { Unit_Size = sizeof(uint32_t) };
explicit RegionAllocator(uint32_t start_cap = 1024*1024) : memory(NULL), sz(0), cap(0), wasted_(0){ capacity(start_cap); }
~RegionAllocator()
{
if (memory != NULL)
::free(memory);
}
uint32_t size () const { return sz; }
uint32_t wasted () const { return wasted_; }
Ref alloc (int size);
void free (int size) { wasted_ += size; }
// Deref, Load Effective Address (LEA), Inverse of LEA (AEL):
T& operator[](Ref r) { assert(r >= 0 && r < sz); return memory[r]; }
const T& operator[](Ref r) const { assert(r >= 0 && r < sz); return memory[r]; }
T* lea (Ref r) { assert(r >= 0 && r < sz); return &memory[r]; }
const T* lea (Ref r) const { assert(r >= 0 && r < sz); return &memory[r]; }
Ref ael (const T* t) { assert((void*)t >= (void*)&memory[0] && (void*)t < (void*)&memory[sz-1]);
return (Ref)(t - &memory[0]); }
void moveTo(RegionAllocator& to) {
if (to.memory != NULL) ::free(to.memory);
to.memory = memory;
to.sz = sz;
to.cap = cap;
to.wasted_ = wasted_;
memory = NULL;
sz = cap = wasted_ = 0;
}
};
template<class T>
void RegionAllocator<T>::capacity(uint32_t min_cap)
{
if (cap >= min_cap) return;
uint32_t prev_cap = cap;
while (cap < min_cap){
// NOTE: Multiply by a factor (13/8) without causing overflow, then add 2 and make the
// result even by clearing the least significant bit. The resulting sequence of capacities
// is carefully chosen to hit a maximum capacity that is close to the '2^32-1' limit when
// using 'uint32_t' as indices so that as much as possible of this space can be used.
uint32_t delta = ((cap >> 1) + (cap >> 3) + 2) & ~1;
cap += delta;
if (cap <= prev_cap)
throw OutOfMemoryException();
}
// printf(" .. (%p) cap = %u\n", this, cap);
assert(cap > 0);
memory = (T*)xrealloc(memory, sizeof(T)*cap);
}
template<class T>
typename RegionAllocator<T>::Ref
RegionAllocator<T>::alloc(int size)
{
// printf("ALLOC called (this = %p, size = %d)\n", this, size); fflush(stdout);
assert(size > 0);
capacity(sz + size);
uint32_t prev_sz = sz;
sz += size;
// Handle overflow:
if (sz < prev_sz)
throw OutOfMemoryException();
return prev_sz;
}
//=================================================================================================
}
#endif

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/******************************************************************************************[Heap.h]
Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson
Copyright (c) 2007-2010, 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.
**************************************************************************************************/
#ifndef Minisat_Heap_h
#define Minisat_Heap_h
#include "mtl/Vec.h"
namespace Minisat {
//=================================================================================================
// A heap implementation with support for decrease/increase key.
template<class Comp>
class Heap {
Comp lt; // The heap is a minimum-heap with respect to this comparator
vec<int> heap; // Heap of integers
vec<int> indices; // Each integers position (index) in the Heap
// 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; }
void percolateUp(int i)
{
int x = heap[i];
int p = parent(i);
while (i != 0 && lt(x, heap[p])){
heap[i] = heap[p];
indices[heap[p]] = i;
i = p;
p = parent(p);
}
heap [i] = x;
indices[x] = i;
}
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];
indices[heap[i]] = i;
i = child;
}
heap [i] = x;
indices[x] = i;
}
public:
Heap(const Comp& c) : lt(c) { }
int size () const { return heap.size(); }
bool empty () const { return heap.size() == 0; }
bool inHeap (int n) const { return n < indices.size() && indices[n] >= 0; }
int operator[](int index) const { assert(index < heap.size()); return heap[index]; }
void decrease (int n) { assert(inHeap(n)); percolateUp (indices[n]); }
void increase (int n) { assert(inHeap(n)); percolateDown(indices[n]); }
// Safe variant of insert/decrease/increase:
void update(int n)
{
if (!inHeap(n))
insert(n);
else {
percolateUp(indices[n]);
percolateDown(indices[n]); }
}
void insert(int n)
{
indices.growTo(n+1, -1);
assert(!inHeap(n));
indices[n] = heap.size();
heap.push(n);
percolateUp(indices[n]);
}
int removeMin()
{
int x = heap[0];
heap[0] = heap.last();
indices[heap[0]] = 0;
indices[x] = -1;
heap.pop();
if (heap.size() > 1) percolateDown(0);
return x;
}
// Rebuild the heap from scratch, using the elements in 'ns':
void build(vec<int>& ns) {
for (int i = 0; i < heap.size(); i++)
indices[heap[i]] = -1;
heap.clear();
for (int i = 0; i < ns.size(); i++){
indices[ns[i]] = i;
heap.push(ns[i]); }
for (int i = heap.size() / 2 - 1; i >= 0; i--)
percolateDown(i);
}
void clear(bool dealloc = false)
{
for (int i = 0; i < heap.size(); i++)
indices[heap[i]] = -1;
heap.clear(dealloc);
}
};
//=================================================================================================
}
#endif

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/**************************************************************************************[IntTypes.h]
Copyright (c) 2009-2010, 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.
**************************************************************************************************/
#ifndef Minisat_IntTypes_h
#define Minisat_IntTypes_h
#ifdef __sun
// Not sure if there are newer versions that support C99 headers. The
// needed features are implemented in the headers below though:
# include <sys/int_types.h>
# include <sys/int_fmtio.h>
# include <sys/int_limits.h>
#else
# include <stdint.h>
# include <inttypes.h>
#endif
#include <limits.h>
//=================================================================================================
#endif

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/*******************************************************************************************[Map.h]
Copyright (c) 2006-2010, 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.
**************************************************************************************************/
#ifndef Minisat_Map_h
#define Minisat_Map_h
#include "mtl/IntTypes.h"
#include "mtl/Vec.h"
namespace Minisat {
//=================================================================================================
// Default hash/equals functions
//
template<class K> struct Hash { uint32_t operator()(const K& k) const { return hash(k); } };
template<class K> struct Equal { bool operator()(const K& k1, const K& k2) const { return k1 == k2; } };
template<class K> struct DeepHash { uint32_t operator()(const K* k) const { return hash(*k); } };
template<class K> struct DeepEqual { bool operator()(const K* k1, const K* k2) const { return *k1 == *k2; } };
static inline uint32_t hash(uint32_t x){ return x; }
static inline uint32_t hash(uint64_t x){ return (uint32_t)x; }
static inline uint32_t hash(int32_t x) { return (uint32_t)x; }
static inline uint32_t hash(int64_t x) { return (uint32_t)x; }
//=================================================================================================
// Some primes
//
static const int nprimes = 25;
static const int primes [nprimes] = { 31, 73, 151, 313, 643, 1291, 2593, 5233, 10501, 21013, 42073, 84181, 168451, 337219, 674701, 1349473, 2699299, 5398891, 10798093, 21596719, 43193641, 86387383, 172775299, 345550609, 691101253 };
//=================================================================================================
// Hash table implementation of Maps
//
template<class K, class D, class H = Hash<K>, class E = Equal<K> >
class Map {
public:
struct Pair { K key; D data; };
private:
H hash;
E equals;
vec<Pair>* table;
int cap;
int size;
// Don't allow copying (error prone):
Map<K,D,H,E>& operator = (Map<K,D,H,E>& other) { assert(0); }
Map (Map<K,D,H,E>& other) { assert(0); }
bool checkCap(int new_size) const { return new_size > cap; }
int32_t index (const K& k) const { return hash(k) % cap; }
void _insert (const K& k, const D& d) {
vec<Pair>& ps = table[index(k)];
ps.push(); ps.last().key = k; ps.last().data = d; }
void rehash () {
const vec<Pair>* old = table;
int old_cap = cap;
int newsize = primes[0];
for (int i = 1; newsize <= cap && i < nprimes; i++)
newsize = primes[i];
table = new vec<Pair>[newsize];
cap = newsize;
for (int i = 0; i < old_cap; i++){
for (int j = 0; j < old[i].size(); j++){
_insert(old[i][j].key, old[i][j].data); }}
delete [] old;
// printf(" --- rehashing, old-cap=%d, new-cap=%d\n", cap, newsize);
}
public:
Map () : table(NULL), cap(0), size(0) {}
Map (const H& h, const E& e) : hash(h), equals(e), table(NULL), cap(0), size(0){}
~Map () { delete [] table; }
// PRECONDITION: the key must already exist in the map.
const D& operator [] (const K& k) const
{
assert(size != 0);
const D* res = NULL;
const vec<Pair>& ps = table[index(k)];
for (int i = 0; i < ps.size(); i++)
if (equals(ps[i].key, k))
res = &ps[i].data;
assert(res != NULL);
return *res;
}
// PRECONDITION: the key must already exist in the map.
D& operator [] (const K& k)
{
assert(size != 0);
D* res = NULL;
vec<Pair>& ps = table[index(k)];
for (int i = 0; i < ps.size(); i++)
if (equals(ps[i].key, k))
res = &ps[i].data;
assert(res != NULL);
return *res;
}
// PRECONDITION: the key must *NOT* exist in the map.
void insert (const K& k, const D& d) { if (checkCap(size+1)) rehash(); _insert(k, d); size++; }
bool peek (const K& k, D& d) const {
if (size == 0) return false;
const vec<Pair>& ps = table[index(k)];
for (int i = 0; i < ps.size(); i++)
if (equals(ps[i].key, k)){
d = ps[i].data;
return true; }
return false;
}
bool has (const K& k) const {
if (size == 0) return false;
const vec<Pair>& ps = table[index(k)];
for (int i = 0; i < ps.size(); i++)
if (equals(ps[i].key, k))
return true;
return false;
}
// PRECONDITION: the key must exist in the map.
void remove(const K& k) {
assert(table != NULL);
vec<Pair>& ps = table[index(k)];
int j = 0;
for (; j < ps.size() && !equals(ps[j].key, k); j++);
assert(j < ps.size());
ps[j] = ps.last();
ps.pop();
size--;
}
void clear () {
cap = size = 0;
delete [] table;
table = NULL;
}
int elems() const { return size; }
int bucket_count() const { return cap; }
// NOTE: the hash and equality objects are not moved by this method:
void moveTo(Map& other){
delete [] other.table;
other.table = table;
other.cap = cap;
other.size = size;
table = NULL;
size = cap = 0;
}
// NOTE: given a bit more time, I could make a more C++-style iterator out of this:
const vec<Pair>& bucket(int i) const { return table[i]; }
};
//=================================================================================================
}
#endif

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/*****************************************************************************************[Queue.h]
Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson
Copyright (c) 2007-2010, 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.
**************************************************************************************************/
#ifndef Minisat_Queue_h
#define Minisat_Queue_h
#include "mtl/Vec.h"
namespace Minisat {
//=================================================================================================
template<class T>
class Queue {
vec<T> buf;
int first;
int end;
public:
typedef T Key;
Queue() : buf(1), first(0), end(0) {}
void clear (bool dealloc = false) { buf.clear(dealloc); buf.growTo(1); first = end = 0; }
int size () const { return (end >= first) ? end - first : end - first + buf.size(); }
const T& operator [] (int index) const { assert(index >= 0); assert(index < size()); return buf[(first + index) % buf.size()]; }
T& operator [] (int index) { assert(index >= 0); assert(index < size()); return buf[(first + index) % buf.size()]; }
T peek () const { assert(first != end); return buf[first]; }
void pop () { assert(first != end); first++; if (first == buf.size()) first = 0; }
void insert(T elem) { // INVARIANT: buf[end] is always unused
buf[end++] = elem;
if (end == buf.size()) end = 0;
if (first == end){ // Resize:
vec<T> tmp((buf.size()*3 + 1) >> 1);
//**/printf("queue alloc: %d elems (%.1f MB)\n", tmp.size(), tmp.size() * sizeof(T) / 1000000.0);
int i = 0;
for (int j = first; j < buf.size(); j++) tmp[i++] = buf[j];
for (int j = 0 ; j < end ; j++) tmp[i++] = buf[j];
first = 0;
end = buf.size();
tmp.moveTo(buf);
}
}
};
//=================================================================================================
}
#endif

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/******************************************************************************************[Sort.h]
Copyright (c) 2003-2007, Niklas Een, Niklas Sorensson
Copyright (c) 2007-2010, 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.
**************************************************************************************************/
#ifndef Minisat_Sort_h
#define Minisat_Sort_h
#include "mtl/Vec.h"
//=================================================================================================
// Some sorting algorithms for vec's
namespace Minisat {
template<class T>
struct LessThan_default {
bool operator () (T x, T y) { return x < y; }
};
template <class T, class LessThan>
void selectionSort(T* array, int size, LessThan lt)
{
int i, j, best_i;
T tmp;
for (i = 0; i < size-1; i++){
best_i = i;
for (j = i+1; j < size; j++){
if (lt(array[j], array[best_i]))
best_i = j;
}
tmp = array[i]; array[i] = array[best_i]; array[best_i] = tmp;
}
}
template <class T> static inline void selectionSort(T* array, int size) {
selectionSort(array, size, LessThan_default<T>()); }
template <class T, class LessThan>
void sort(T* array, int size, LessThan lt)
{
if (size <= 15)
selectionSort(array, size, lt);
else{
T pivot = array[size / 2];
T tmp;
int i = -1;
int j = size;
for(;;){
do i++; while(lt(array[i], pivot));
do j--; while(lt(pivot, array[j]));
if (i >= j) break;
tmp = array[i]; array[i] = array[j]; array[j] = tmp;
}
sort(array , i , lt);
sort(&array[i], size-i, lt);
}
}
template <class T> static inline void sort(T* array, int size) {
sort(array, size, LessThan_default<T>()); }
//=================================================================================================
// For 'vec's:
template <class T, class LessThan> void sort(vec<T>& v, LessThan lt) {
sort((T*)v, v.size(), lt); }
template <class T> void sort(vec<T>& v) {
sort(v, LessThan_default<T>()); }
//=================================================================================================
}
#endif

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/*******************************************************************************************[Vec.h]
Copyright (c) 2003-2007, Niklas Een, Niklas Sorensson
Copyright (c) 2007-2010, 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.
**************************************************************************************************/
#ifndef Minisat_Vec_h
#define Minisat_Vec_h
#include <assert.h>
#include <new>
#include "mtl/IntTypes.h"
#include "mtl/XAlloc.h"
namespace Minisat {
//=================================================================================================
// Automatically resizable arrays
//
// NOTE! Don't use this vector on datatypes that cannot be re-located in memory (with realloc)
template<class T>
class vec {
T* data;
int sz;
int cap;
// Don't allow copying (error prone):
vec<T>& operator = (vec<T>& other) { assert(0); return *this; }
vec (vec<T>& other) { assert(0); }
// Helpers for calculating next capacity:
static inline int imax (int x, int y) { int mask = (y-x) >> (sizeof(int)*8-1); return (x&mask) + (y&(~mask)); }
//static inline void nextCap(int& cap){ cap += ((cap >> 1) + 2) & ~1; }
static inline void nextCap(int& cap){ cap += ((cap >> 1) + 2) & ~1; }
public:
// Constructors:
vec() : data(NULL) , sz(0) , cap(0) { }
explicit vec(int size) : data(NULL) , sz(0) , cap(0) { growTo(size); }
vec(int size, const T& pad) : data(NULL) , sz(0) , cap(0) { growTo(size, pad); }
~vec() { clear(true); }
// Pointer to first element:
operator T* (void) { return data; }
// Size operations:
int size (void) const { return sz; }
void shrink (int nelems) { assert(nelems <= sz); for (int i = 0; i < nelems; i++) sz--, data[sz].~T(); }
void shrink_ (int nelems) { assert(nelems <= sz); sz -= nelems; }
int capacity (void) const { return cap; }
void capacity (int min_cap);
void growTo (int size);
void growTo (int size, const T& pad);
void clear (bool dealloc = false);
// Stack interface:
void push (void) { if (sz == cap) capacity(sz+1); new (&data[sz]) T(); sz++; }
void push (const T& elem) { if (sz == cap) capacity(sz+1); data[sz++] = elem; }
void push_ (const T& elem) { assert(sz < cap); data[sz++] = elem; }
void pop (void) { assert(sz > 0); sz--, data[sz].~T(); }
// NOTE: it seems possible that overflow can happen in the 'sz+1' expression of 'push()', but
// in fact it can not since it requires that 'cap' is equal to INT_MAX. This in turn can not
// happen given the way capacities are calculated (below). Essentially, all capacities are
// even, but INT_MAX is odd.
const T& last (void) const { return data[sz-1]; }
T& last (void) { return data[sz-1]; }
// Vector interface:
const T& operator [] (int index) const { return data[index]; }
T& operator [] (int index) { return data[index]; }
// Duplicatation (preferred instead):
void copyTo(vec<T>& copy) const { copy.clear(); copy.growTo(sz); for (int i = 0; i < sz; i++) copy[i] = data[i]; }
void moveTo(vec<T>& dest) { dest.clear(true); dest.data = data; dest.sz = sz; dest.cap = cap; data = NULL; sz = 0; cap = 0; }
};
template<class T>
void vec<T>::capacity(int min_cap) {
if (cap >= min_cap) return;
int add = imax((min_cap - cap + 1) & ~1, ((cap >> 1) + 2) & ~1); // NOTE: grow by approximately 3/2
if (add > INT_MAX - cap || ((data = (T*)::realloc(data, (cap += add) * sizeof(T))) == NULL) && errno == ENOMEM)
throw OutOfMemoryException();
}
template<class T>
void vec<T>::growTo(int size, const T& pad) {
if (sz >= size) return;
capacity(size);
for (int i = sz; i < size; i++) data[i] = pad;
sz = size; }
template<class T>
void vec<T>::growTo(int size) {
if (sz >= size) return;
capacity(size);
for (int i = sz; i < size; i++) new (&data[i]) T();
sz = size; }
template<class T>
void vec<T>::clear(bool dealloc) {
if (data != NULL){
for (int i = 0; i < sz; i++) data[i].~T();
sz = 0;
if (dealloc) free(data), data = NULL, cap = 0; } }
//=================================================================================================
}
#endif

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minisat/mtl/XAlloc.h Normal file
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/****************************************************************************************[XAlloc.h]
Copyright (c) 2009-2010, 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.
**************************************************************************************************/
#ifndef Minisat_XAlloc_h
#define Minisat_XAlloc_h
#include <errno.h>
#include <stdlib.h>
namespace Minisat {
//=================================================================================================
// Simple layer on top of malloc/realloc to catch out-of-memory situtaions and provide some typing:
class OutOfMemoryException{};
static inline void* xrealloc(void *ptr, size_t size)
{
void* mem = realloc(ptr, size);
if (mem == NULL && errno == ENOMEM){
throw OutOfMemoryException();
}else
return mem;
}
//=================================================================================================
}
#endif

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##
## This file is for system specific configurations. For instance, on
## some systems the path to zlib needs to be added. Example:
##
## CFLAGS += -I/usr/local/include
## LFLAGS += -L/usr/local/lib

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##
## Template makefile for Standard, Profile, Debug, Release, and Release-static versions
##
## eg: "make rs" for a statically linked release version.
## "make d" for a debug version (no optimizations).
## "make" for the standard version (optimized, but with debug information and assertions active)
PWD = $(shell pwd)
EXEC ?= $(notdir $(PWD))
CSRCS = $(wildcard $(PWD)/*.cc)
DSRCS = $(foreach dir, $(DEPDIR), $(filter-out $(MROOT)/$(dir)/Main.cc, $(wildcard $(MROOT)/$(dir)/*.cc)))
CHDRS = $(wildcard $(PWD)/*.h)
COBJS = $(CSRCS:.cc=.o) $(DSRCS:.cc=.o)
PCOBJS = $(addsuffix p, $(COBJS))
DCOBJS = $(addsuffix d, $(COBJS))
RCOBJS = $(addsuffix r, $(COBJS))
CXX ?= g++
CFLAGS ?= -Wall -Wno-parentheses
LFLAGS ?= -Wall
COPTIMIZE ?= -O3
CFLAGS += -I$(MROOT) -D __STDC_LIMIT_MACROS -D __STDC_FORMAT_MACROS
LFLAGS += -lz
.PHONY : s p d r rs clean
s: $(EXEC)
p: $(EXEC)_profile
d: $(EXEC)_debug
r: $(EXEC)_release
rs: $(EXEC)_static
libs: lib$(LIB)_standard.a
libp: lib$(LIB)_profile.a
libd: lib$(LIB)_debug.a
libr: lib$(LIB)_release.a
## Compile options
%.o: CFLAGS +=$(COPTIMIZE) -g -D DEBUG
%.op: CFLAGS +=$(COPTIMIZE) -pg -g -D NDEBUG
%.od: CFLAGS +=-O0 -g -D DEBUG
%.or: CFLAGS +=$(COPTIMIZE) -g -D NDEBUG
## Link options
$(EXEC): LFLAGS += -g
$(EXEC)_profile: LFLAGS += -g -pg
$(EXEC)_debug: LFLAGS += -g
#$(EXEC)_release: LFLAGS += ...
$(EXEC)_static: LFLAGS += --static
## Dependencies
$(EXEC): $(COBJS)
$(EXEC)_profile: $(PCOBJS)
$(EXEC)_debug: $(DCOBJS)
$(EXEC)_release: $(RCOBJS)
$(EXEC)_static: $(RCOBJS)
lib$(LIB)_standard.a: $(filter-out */Main.o, $(COBJS))
lib$(LIB)_profile.a: $(filter-out */Main.op, $(PCOBJS))
lib$(LIB)_debug.a: $(filter-out */Main.od, $(DCOBJS))
lib$(LIB)_release.a: $(filter-out */Main.or, $(RCOBJS))
## Build rule
%.o %.op %.od %.or: %.cc
@echo Compiling: $(subst $(MROOT)/,,$@)
@$(CXX) $(CFLAGS) -c -o $@ $<
## Linking rules (standard/profile/debug/release)
$(EXEC) $(EXEC)_profile $(EXEC)_debug $(EXEC)_release $(EXEC)_static:
@echo Linking: "$@ ( $(foreach f,$^,$(subst $(MROOT)/,,$f)) )"
@$(CXX) $^ $(LFLAGS) -o $@
## Library rules (standard/profile/debug/release)
lib$(LIB)_standard.a lib$(LIB)_profile.a lib$(LIB)_release.a lib$(LIB)_debug.a:
@echo Making library: "$@ ( $(foreach f,$^,$(subst $(MROOT)/,,$f)) )"
@$(AR) -rcsv $@ $^
## Library Soft Link rule:
libs libp libd libr:
@echo "Making Soft Link: $^ -> lib$(LIB).a"
@ln -sf $^ lib$(LIB).a
## Clean rule
clean:
@rm -f $(EXEC) $(EXEC)_profile $(EXEC)_debug $(EXEC)_release $(EXEC)_static \
$(COBJS) $(PCOBJS) $(DCOBJS) $(RCOBJS) *.core depend.mk
## Make dependencies
depend.mk: $(CSRCS) $(CHDRS)
@echo Making dependencies
@$(CXX) $(CFLAGS) -I$(MROOT) \
$(CSRCS) -MM | sed 's|\(.*\):|$(PWD)/\1 $(PWD)/\1r $(PWD)/\1d $(PWD)/\1p:|' > depend.mk
@for dir in $(DEPDIR); do \
if [ -r $(MROOT)/$${dir}/depend.mk ]; then \
echo Depends on: $${dir}; \
cat $(MROOT)/$${dir}/depend.mk >> depend.mk; \
fi; \
done
-include $(MROOT)/mtl/config.mk
-include depend.mk