1 files changed, 113 insertions, 0 deletions
diff --git a/src/opt/mfs/mfsSat.c b/src/opt/mfs/mfsSat.c
new file mode 100644
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+/**CFile****************************************************************
+
+  FileName    [mfsSat.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [The good old minimization with complete don't-cares.]
+
+  Synopsis    []
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: mfsSat.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "mfsInt.h"
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [Enumerates through the SAT assignments.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Abc_NtkMfsSolveSat_iter( Mfs_Man_t * p )
+{
+    int Lits[MFS_FANIN_MAX];
+    int RetValue, iVar, b, Mint;
+    RetValue = sat_solver_solve( p->pSat, NULL, NULL, (sint64)10000, (sint64)0, (sint64)0, (sint64)0 );
+    if ( RetValue != l_True )
+        return 0;
+    // add SAT assignment to the solver
+    Mint = 0;
+    Vec_IntForEachEntry( p->vProjVars, iVar, b )
+    {
+        Lits[b] = toLit( iVar );
+        if ( sat_solver_var_value( p->pSat, iVar ) )
+        {
+            Mint |= (1 << b);
+            Lits[b] = lit_neg( Lits[b] );
+        }
+    }
+    assert( !Aig_InfoHasBit(p->uCare, Mint) );
+    Aig_InfoSetBit( p->uCare, Mint );
+    // add the blocking clause
+    RetValue = sat_solver_addclause( p->pSat, Lits, Lits + Vec_IntSize(p->vProjVars) );
+    if ( RetValue == 0 )
+        return 0;
+    return 1;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Enumerates through the SAT assignments.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Abc_NtkMfsSolveSat( Mfs_Man_t * p, Abc_Obj_t * pNode )
+{
+    Aig_Obj_t * pObjPo;
+    int i;
+    // collect projection variables
+    Vec_IntClear( p->vProjVars );
+    Vec_PtrForEachEntryStart( p->pAigWin->vPos, pObjPo, i, Aig_ManPoNum(p->pAigWin) - Abc_ObjFaninNum(pNode) )
+    {
+        assert( p->pCnf->pVarNums[pObjPo->Id] >= 0 );
+        Vec_IntPush( p->vProjVars, p->pCnf->pVarNums[pObjPo->Id] );
+    }
+
+    // prepare the truth table of care set
+    p->nFanins = Vec_IntSize( p->vProjVars );
+    p->nWords = Aig_TruthWordNum( p->nFanins );
+    memset( p->uCare, 0, sizeof(unsigned) * p->nWords );
+
+    // iterate through the SAT assignments
+    while ( Abc_NtkMfsSolveSat_iter( p ) );
+
+    // write statistics
+    p->nCares = 0;
+    for ( i = 0; i < p->nWords; i++ )
+        p->nCares += Aig_WordCountOnes( p->uCare[i] );
+
+    p->nMintsCare  += p->nCares;
+    p->nMintsTotal += 32 * p->nWords;
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+