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+/**CFile****************************************************************
+
+  FileName    [msat.h]
+
+  PackageName [A C version of SAT solver MINISAT, originally developed 
+  in C++ by Niklas Een and Niklas Sorensson, Chalmers University of 
+  Technology, Sweden: http://www.cs.chalmers.se/~een/Satzoo.]
+
+  Synopsis    [External definitions of the solver.]
+
+  Author      [Alan Mishchenko <alanmi@eecs.berkeley.edu>]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - January 1, 2004.]
+
+  Revision    [$Id: msat.h,v 1.6 2004/05/12 06:30:20 satrajit Exp $]
+
+***********************************************************************/
+
+#ifndef __MSAT_H__
+#define __MSAT_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+////////////////////////////////////////////////////////////////////////
+///                          INCLUDES                                ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                         PARAMETERS                               ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                    STRUCTURE DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+#ifdef bool
+#undef bool
+#endif
+
+#ifndef __MVTYPES_H__
+typedef int  bool;
+#endif
+
+typedef struct Msat_Solver_t_      Msat_Solver_t;
+
+// the vector of intergers and of clauses
+typedef struct Msat_IntVec_t_      Msat_IntVec_t;
+typedef struct Msat_ClauseVec_t_   Msat_ClauseVec_t;
+typedef struct Msat_VarHeap_t_     Msat_VarHeap_t;
+
+// the return value of the solver
+typedef enum { MSAT_FALSE = -1, MSAT_UNKNOWN = 0, MSAT_TRUE = 1 } Msat_Type_t;
+
+// representation of variables and literals
+// the literal (l) is the variable (v) and the sign (s)
+// s = 0 the variable is positive
+// s = 1 the variable is negative
+#define MSAT_VAR2LIT(v,s) (2*(v)+(s)) 
+#define MSAT_LITNOT(l)    ((l)^1)
+#define MSAT_LITSIGN(l)   ((l)&1)     
+#define MSAT_LIT2VAR(l)   ((l)>>1)
+
+////////////////////////////////////////////////////////////////////////
+///                       GLOBAL VARIABLES                           ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                       MACRO DEFINITIONS                          ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DECLARATIONS                        ///
+////////////////////////////////////////////////////////////////////////
+
+/*=== satRead.c ============================================================*/
+extern bool             Msat_SolverParseDimacs( FILE * pFile, Msat_Solver_t ** p, int fVerbose );
+/*=== satSolver.c ===========================================================*/
+// adding vars, clauses, simplifying the database, and solving
+extern bool             Msat_SolverAddVar( Msat_Solver_t * p, int Level );
+extern bool             Msat_SolverAddClause( Msat_Solver_t * p, Msat_IntVec_t * pLits );
+extern bool             Msat_SolverSimplifyDB( Msat_Solver_t * p );
+extern bool             Msat_SolverSolve( Msat_Solver_t * p, Msat_IntVec_t * pVecAssumps, int nBackTrackLimit, int nTimeLimit );
+// printing stats, assignments, and clauses
+extern void             Msat_SolverPrintStats( Msat_Solver_t * p );
+extern void             Msat_SolverPrintAssignment( Msat_Solver_t * p );
+extern void             Msat_SolverPrintClauses( Msat_Solver_t * p );
+extern void             Msat_SolverWriteDimacs( Msat_Solver_t * p, char * pFileName );
+// access to the solver internal data
+extern int              Msat_SolverReadVarNum( Msat_Solver_t * p );
+extern int              Msat_SolverReadClauseNum( Msat_Solver_t * p );
+extern int              Msat_SolverReadVarAllocNum( Msat_Solver_t * p );
+extern int *            Msat_SolverReadAssignsArray( Msat_Solver_t * p );
+extern int *            Msat_SolverReadModelArray( Msat_Solver_t * p );
+extern unsigned         Msat_SolverReadTruth( Msat_Solver_t * p );
+extern int              Msat_SolverReadBackTracks( Msat_Solver_t * p );
+extern int              Msat_SolverReadInspects( Msat_Solver_t * p );
+extern void             Msat_SolverSetVerbosity( Msat_Solver_t * p, int fVerbose );
+extern void             Msat_SolverSetProofWriting( Msat_Solver_t * p, int fProof );
+extern void             Msat_SolverSetVarTypeA( Msat_Solver_t * p, int Var );
+extern void             Msat_SolverSetVarMap( Msat_Solver_t * p, Msat_IntVec_t * vVarMap );
+extern void             Msat_SolverMarkLastClauseTypeA( Msat_Solver_t * p );
+extern void             Msat_SolverMarkClausesStart( Msat_Solver_t * p );
+extern float *          Msat_SolverReadFactors( Msat_Solver_t * p );
+// returns the solution after incremental solving
+extern int              Msat_SolverReadSolutions( Msat_Solver_t * p );
+extern int *            Msat_SolverReadSolutionsArray( Msat_Solver_t * p );
+extern Msat_ClauseVec_t *  Msat_SolverReadAdjacents( Msat_Solver_t * p );
+extern Msat_IntVec_t *  Msat_SolverReadConeVars( Msat_Solver_t * p );
+extern Msat_IntVec_t *  Msat_SolverReadVarsUsed( Msat_Solver_t * p );
+/*=== satSolverSearch.c ===========================================================*/
+extern void             Msat_SolverRemoveLearned( Msat_Solver_t * p );
+extern void             Msat_SolverRemoveMarked( Msat_Solver_t * p );
+/*=== satSolverApi.c ===========================================================*/
+// allocation, cleaning, and freeing the solver
+extern Msat_Solver_t *  Msat_SolverAlloc( int nVars, double dClaInc, double dClaDecay, double dVarInc, double dVarDecay, bool fVerbose );
+extern void             Msat_SolverResize( Msat_Solver_t * pMan, int nVarsAlloc );
+extern void             Msat_SolverClean( Msat_Solver_t * p, int nVars );
+extern void             Msat_SolverPrepare( Msat_Solver_t * pSat, Msat_IntVec_t * vVars );
+extern void             Msat_SolverFree( Msat_Solver_t * p );
+/*=== satVec.c ===========================================================*/
+extern Msat_IntVec_t *  Msat_IntVecAlloc( int nCap );
+extern Msat_IntVec_t *  Msat_IntVecAllocArray( int * pArray, int nSize );
+extern Msat_IntVec_t *  Msat_IntVecAllocArrayCopy( int * pArray, int nSize );
+extern Msat_IntVec_t *  Msat_IntVecDup( Msat_IntVec_t * pVec );
+extern Msat_IntVec_t *  Msat_IntVecDupArray( Msat_IntVec_t * pVec );
+extern void             Msat_IntVecFree( Msat_IntVec_t * p );
+extern void             Msat_IntVecFill( Msat_IntVec_t * p, int nSize, int Entry );
+extern int *            Msat_IntVecReleaseArray( Msat_IntVec_t * p );
+extern int *            Msat_IntVecReadArray( Msat_IntVec_t * p );
+extern int              Msat_IntVecReadSize( Msat_IntVec_t * p );
+extern int              Msat_IntVecReadEntry( Msat_IntVec_t * p, int i );
+extern int              Msat_IntVecReadEntryLast( Msat_IntVec_t * p );
+extern void             Msat_IntVecWriteEntry( Msat_IntVec_t * p, int i, int Entry );
+extern void             Msat_IntVecGrow( Msat_IntVec_t * p, int nCapMin );
+extern void             Msat_IntVecShrink( Msat_IntVec_t * p, int nSizeNew );
+extern void             Msat_IntVecClear( Msat_IntVec_t * p );
+extern void             Msat_IntVecPush( Msat_IntVec_t * p, int Entry );
+extern int              Msat_IntVecPushUnique( Msat_IntVec_t * p, int Entry );
+extern void             Msat_IntVecPushUniqueOrder( Msat_IntVec_t * p, int Entry, int fIncrease );
+extern int              Msat_IntVecPop( Msat_IntVec_t * p );
+extern void             Msat_IntVecSort( Msat_IntVec_t * p, int fReverse );
+/*=== satHeap.c ===========================================================*/
+extern Msat_VarHeap_t * Msat_VarHeapAlloc();
+extern void             Msat_VarHeapSetActivity( Msat_VarHeap_t * p, double * pActivity );
+extern void             Msat_VarHeapStart( Msat_VarHeap_t * p, int * pVars, int nVars, int nVarsAlloc );
+extern void             Msat_VarHeapGrow( Msat_VarHeap_t * p, int nSize );
+extern void             Msat_VarHeapStop( Msat_VarHeap_t * p );
+extern void             Msat_VarHeapPrint( FILE * pFile, Msat_VarHeap_t * p );
+extern void             Msat_VarHeapCheck( Msat_VarHeap_t * p );
+extern void             Msat_VarHeapCheckOne( Msat_VarHeap_t * p, int iVar );
+extern int              Msat_VarHeapContainsVar( Msat_VarHeap_t * p, int iVar );
+extern void             Msat_VarHeapInsert( Msat_VarHeap_t * p, int iVar );  
+extern void             Msat_VarHeapUpdate( Msat_VarHeap_t * p, int iVar );  
+extern void             Msat_VarHeapDelete( Msat_VarHeap_t * p, int iVar );  
+extern double           Msat_VarHeapReadMaxWeight( Msat_VarHeap_t * p );
+extern int              Msat_VarHeapCountNodes( Msat_VarHeap_t * p, double WeightLimit );  
+extern int              Msat_VarHeapReadMax( Msat_VarHeap_t * p );  
+extern int              Msat_VarHeapGetMax( Msat_VarHeap_t * p );  
+ 
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////