174 lines
5.2 KiB
C
174 lines
5.2 KiB
C
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/***********************************************************************************
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CryptoMiniSat -- Copyright (c) 2009 Mate Soos
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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**************************************************************************************************/
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#ifndef DOUBLEPACKEDROW_H
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#define DOUBLEPACKEDROW_H
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#ifdef _MSC_VER
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#include <msvc/stdint.h>
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#else
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#include <stdint.h>
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#endif //_MSC_VER
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#include <stdlib.h>
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#include "SolverTypes.h"
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namespace MINISAT
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{
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using namespace MINISAT;
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class DoublePackedRow
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{
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private:
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class BitIter {
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public:
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inline void operator=(const lbool toSet)
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{
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val &= ~((unsigned char)3 << offset);
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val |= toSet.value << offset;
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}
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inline operator lbool() const
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{
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return lbool((val >> offset) & 3);
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}
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inline const bool isUndef() const {
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return ((lbool)*this).isUndef();
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}
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inline const bool isDef() const {
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return ((lbool)*this).isDef();
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}
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inline const bool getBool() const {
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return ((lbool)*this).getBool();
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}
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inline const bool operator==(lbool b) const {
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return ((lbool)*this) == b;
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}
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inline const bool operator!=(lbool b) const {
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return ((lbool)*this) != b;
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}
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const lbool operator^(const bool b) const {
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return ((lbool)*this) ^ b;
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}
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private:
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friend class DoublePackedRow;
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inline BitIter(unsigned char& mp, const uint32_t _offset) :
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val(mp)
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, offset(_offset)
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{}
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unsigned char& val;
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const uint32_t offset;
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};
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class BitIterConst {
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public:
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inline operator lbool() const
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{
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return lbool((val >> offset) & 3);
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}
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inline const bool isUndef() const {
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return ((lbool)*this).isUndef();
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}
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inline const bool isDef() const {
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return ((lbool)*this).isDef();
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}
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inline const bool getBool() const {
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return ((lbool)*this).getBool();
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}
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inline const bool operator==(lbool b) const {
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return ((lbool)*this) == b;
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}
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inline const bool operator!=(lbool b) const {
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return ((lbool)*this) != b;
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}
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const lbool operator^(const bool b) const {
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return ((lbool)*this) ^ b;
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}
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private:
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friend class DoublePackedRow;
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inline BitIterConst(unsigned char& mp, const uint32_t _offset) :
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val(mp)
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, offset(_offset)
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{}
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const unsigned char& val;
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const uint32_t offset;
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};
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public:
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DoublePackedRow() :
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numElems(0)
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, mp(NULL)
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{}
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uint32_t size() const
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{
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return numElems;
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}
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void growTo(const uint32_t newNumElems)
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{
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uint32_t oldSize = numElems/4 + (bool)(numElems % 4);
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uint32_t newSize = newNumElems/4 + (bool)(newNumElems % 4);
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if (oldSize >= newSize) {
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numElems = std::max(newNumElems, numElems);
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return;
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}
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mp = (unsigned char*)realloc(mp, newSize*sizeof(unsigned char));
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numElems = newNumElems;
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}
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inline BitIter operator[](const uint32_t at)
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{
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return BitIter(mp[at/4], (at%4)*2);
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}
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inline const BitIterConst operator[](const uint32_t at) const
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{
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return BitIterConst(mp[at/4], (at%4)*2);
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}
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inline void push(const lbool val)
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{
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growTo(numElems+1);
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(*this)[numElems-1] = val;
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}
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/*void clear(const uint32_t at)
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{
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mp[at/32] &= ~((uint64_t)3 << ((at%32)*2));
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}*/
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private:
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Var numElems;
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unsigned char *mp;
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};
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}; //NAMESPACE MINISAT
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#endif //DOUBLEPACKEDROW_H
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