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/**CFile****************************************************************
FileName [cnf.h]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [DAG-aware AIG rewriting.]
Synopsis [External declarations.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - April 28, 2007.]
Revision [$Id: cnf.h,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
***********************************************************************/
#ifndef ABC__aig__cnf__cnf_h
#define ABC__aig__cnf__cnf_h
////////////////////////////////////////////////////////////////////////
/// INCLUDES ///
////////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "misc/vec/vec.h"
#include "aig/aig/aig.h"
#include "opt/dar/darInt.h"
////////////////////////////////////////////////////////////////////////
/// PARAMETERS ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_HEADER_START
////////////////////////////////////////////////////////////////////////
/// BASIC TYPES ///
////////////////////////////////////////////////////////////////////////
typedef struct Cnf_Man_t_ Cnf_Man_t;
typedef struct Cnf_Dat_t_ Cnf_Dat_t;
typedef struct Cnf_Cut_t_ Cnf_Cut_t;
// the CNF asserting outputs of AIG to be 1
struct Cnf_Dat_t_
{
Aig_Man_t * pMan; // the AIG manager, for which CNF is computed
int nVars; // the number of variables
int nLiterals; // the number of CNF literals
int nClauses; // the number of CNF clauses
int ** pClauses; // the CNF clauses
int * pVarNums; // the number of CNF variable for each node ID (-1 if unused)
int * pObj2Clause; // the mapping of objects into clauses
int * pObj2Count; // the mapping of objects into clause number
unsigned char * pClaPols; // polarity of input literals in each clause
Vec_Int_t * vMapping; // mapping of internal nodes
};
// the cut used to represent node in the AIG
struct Cnf_Cut_t_
{
char nFanins; // the number of leaves
char Cost; // the cost of this cut
short nWords; // the number of words in truth table
Vec_Int_t * vIsop[2]; // neg/pos ISOPs
int pFanins[0]; // the fanins (followed by the truth table)
};
// the CNF computation manager
struct Cnf_Man_t_
{
Aig_Man_t * pManAig; // the underlying AIG manager
char * pSopSizes; // sizes of SOPs for 4-variable functions
char ** pSops; // the SOPs for 4-variable functions
int aArea; // the area of the mapping
Aig_MmFlex_t * pMemCuts; // memory manager for cuts
int nMergeLimit; // the limit on the size of merged cut
unsigned * pTruths[4]; // temporary truth tables
Vec_Int_t * vMemory; // memory for intermediate ISOP representation
abctime timeCuts;
abctime timeMap;
abctime timeSave;
};
static inline Dar_Cut_t * Dar_ObjBestCut( Aig_Obj_t * pObj ) { Dar_Cut_t * pCut; int i; Dar_ObjForEachCut( pObj, pCut, i ) if ( pCut->fBest ) return pCut; return NULL; }
static inline int Cnf_CutSopCost( Cnf_Man_t * p, Dar_Cut_t * pCut ) { return p->pSopSizes[pCut->uTruth] + p->pSopSizes[0xFFFF & ~pCut->uTruth]; }
static inline int Cnf_CutLeaveNum( Cnf_Cut_t * pCut ) { return pCut->nFanins; }
static inline int * Cnf_CutLeaves( Cnf_Cut_t * pCut ) { return pCut->pFanins; }
static inline unsigned * Cnf_CutTruth( Cnf_Cut_t * pCut ) { return (unsigned *)(pCut->pFanins + pCut->nFanins); }
static inline Cnf_Cut_t * Cnf_ObjBestCut( Aig_Obj_t * pObj ) { return (Cnf_Cut_t *)pObj->pData; }
static inline void Cnf_ObjSetBestCut( Aig_Obj_t * pObj, Cnf_Cut_t * pCut ) { pObj->pData = pCut; }
////////////////////////////////////////////////////////////////////////
/// MACRO DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// ITERATORS ///
////////////////////////////////////////////////////////////////////////
// iterator over the clauses
#define Cnf_CnfForClause( p, pBeg, pEnd, i ) \
for ( i = 0; i < p->nClauses && (pBeg = p->pClauses[i]) && (pEnd = p->pClauses[i+1]); i++ )
// iterator over leaves of the cut
#define Cnf_CutForEachLeaf( p, pCut, pLeaf, i ) \
for ( i = 0; (i < (int)(pCut)->nFanins) && ((pLeaf) = Aig_ManObj(p, (pCut)->pFanins[i])); i++ )
////////////////////////////////////////////////////////////////////////
/// FUNCTION DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
/*=== cnfCore.c ========================================================*/
extern Vec_Int_t * Cnf_DeriveMappingArray( Aig_Man_t * pAig );
extern Cnf_Dat_t * Cnf_Derive( Aig_Man_t * pAig, int nOutputs );
extern Cnf_Dat_t * Cnf_DeriveWithMan( Cnf_Man_t * p, Aig_Man_t * pAig, int nOutputs );
extern Cnf_Dat_t * Cnf_DeriveOther( Aig_Man_t * pAig, int fSkipTtMin );
extern Cnf_Dat_t * Cnf_DeriveOtherWithMan( Cnf_Man_t * p, Aig_Man_t * pAig, int fSkipTtMin );
extern void Cnf_ManPrepare();
extern Cnf_Man_t * Cnf_ManRead();
extern void Cnf_ManFree();
/*=== cnfCut.c ========================================================*/
extern Cnf_Cut_t * Cnf_CutCreate( Cnf_Man_t * p, Aig_Obj_t * pObj );
extern void Cnf_CutPrint( Cnf_Cut_t * pCut );
extern void Cnf_CutFree( Cnf_Cut_t * pCut );
extern void Cnf_CutUpdateRefs( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, Cnf_Cut_t * pCutRes );
extern Cnf_Cut_t * Cnf_CutCompose( Cnf_Man_t * p, Cnf_Cut_t * pCut, Cnf_Cut_t * pCutFan, int iFan );
/*=== cnfData.c ========================================================*/
extern void Cnf_ReadMsops( char ** ppSopSizes, char *** ppSops );
/*=== cnfFast.c ========================================================*/
extern void Cnf_CollectLeaves( Aig_Obj_t * pRoot, Vec_Ptr_t * vSuper, int fStopCompl );
extern void Cnf_ComputeClauses( Aig_Man_t * p, Aig_Obj_t * pRoot, Vec_Ptr_t * vLeaves,
Vec_Ptr_t * vNodes, Vec_Int_t * vMap, Vec_Int_t * vCover, Vec_Int_t * vClauses );
extern void Cnf_DeriveFastMark( Aig_Man_t * p );
extern Cnf_Dat_t * Cnf_DeriveFast( Aig_Man_t * p, int nOutputs );
/*=== cnfMan.c ========================================================*/
extern Cnf_Man_t * Cnf_ManStart();
extern void Cnf_ManStop( Cnf_Man_t * p );
extern Vec_Int_t * Cnf_DataCollectPiSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p );
extern Cnf_Dat_t * Cnf_DataAlloc( Aig_Man_t * pAig, int nVars, int nClauses, int nLiterals );
extern Cnf_Dat_t * Cnf_DataDup( Cnf_Dat_t * p );
extern void Cnf_DataFree( Cnf_Dat_t * p );
extern void Cnf_DataLift( Cnf_Dat_t * p, int nVarsPlus );
extern void Cnf_DataCollectFlipLits( Cnf_Dat_t * p, int iFlipVar, Vec_Int_t * vFlips );
extern void Cnf_DataLiftAndFlipLits( Cnf_Dat_t * p, int nVarsPlus, Vec_Int_t * vLits );
extern void Cnf_DataPrint( Cnf_Dat_t * p, int fReadable );
extern void Cnf_DataWriteIntoFile( Cnf_Dat_t * p, char * pFileName, int fReadable, Vec_Int_t * vForAlls, Vec_Int_t * vExists );
extern void * Cnf_DataWriteIntoSolver( Cnf_Dat_t * p, int nFrames, int fInit );
extern void * Cnf_DataWriteIntoSolverInt( void * pSat, Cnf_Dat_t * p, int nFrames, int fInit );
extern int Cnf_DataWriteOrClause( void * pSat, Cnf_Dat_t * pCnf );
extern int Cnf_DataWriteAndClauses( void * p, Cnf_Dat_t * pCnf );
extern void Cnf_DataTranformPolarity( Cnf_Dat_t * pCnf, int fTransformPos );
extern int Cnf_DataAddXorClause( void * pSat, int iVarA, int iVarB, int iVarC );
/*=== cnfMap.c ========================================================*/
extern void Cnf_DeriveMapping( Cnf_Man_t * p );
extern int Cnf_ManMapForCnf( Cnf_Man_t * p );
/*=== cnfPost.c ========================================================*/
extern void Cnf_ManTransferCuts( Cnf_Man_t * p );
extern void Cnf_ManFreeCuts( Cnf_Man_t * p );
extern void Cnf_ManPostprocess( Cnf_Man_t * p );
/*=== cnfUtil.c ========================================================*/
extern Vec_Ptr_t * Aig_ManScanMapping( Cnf_Man_t * p, int fCollect );
extern Vec_Ptr_t * Cnf_ManScanMapping( Cnf_Man_t * p, int fCollect, int fPreorder );
extern Vec_Int_t * Cnf_DataCollectCiSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p );
extern Vec_Int_t * Cnf_DataCollectCoSatNums( Cnf_Dat_t * pCnf, Aig_Man_t * p );
extern unsigned char * Cnf_DataDeriveLitPolarities( Cnf_Dat_t * p );
extern Cnf_Dat_t * Cnf_DataReadFromFile( char * pFileName );
/*=== cnfWrite.c ========================================================*/
extern Vec_Int_t * Cnf_ManWriteCnfMapping( Cnf_Man_t * p, Vec_Ptr_t * vMapped );
extern void Cnf_SopConvertToVector( char * pSop, int nCubes, Vec_Int_t * vCover );
extern Cnf_Dat_t * Cnf_ManWriteCnf( Cnf_Man_t * p, Vec_Ptr_t * vMapped, int nOutputs );
extern Cnf_Dat_t * Cnf_ManWriteCnfOther( Cnf_Man_t * p, Vec_Ptr_t * vMapped );
extern Cnf_Dat_t * Cnf_DeriveSimple( Aig_Man_t * p, int nOutputs );
extern Cnf_Dat_t * Cnf_DeriveSimpleForRetiming( Aig_Man_t * p );
ABC_NAMESPACE_HEADER_END
#endif
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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