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/**CFile****************************************************************
FileName [cnfCore.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [AIG-to-CNF conversion.]
Synopsis []
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - April 28, 2007.]
Revision [$Id: cnfCore.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
***********************************************************************/
#include "cnf.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
static Cnf_Man_t * s_pManCnf = NULL;
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Converts AIG into the SAT solver.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Cnf_Dat_t * Cnf_Derive( Aig_Man_t * pAig, int nOutputs )
{
Cnf_Man_t * p;
Cnf_Dat_t * pCnf;
Vec_Ptr_t * vMapped;
Aig_MmFixed_t * pMemCuts;
int clk;
// allocate the CNF manager
if ( s_pManCnf == NULL )
s_pManCnf = Cnf_ManStart();
// connect the managers
p = s_pManCnf;
p->pManAig = pAig;
// generate cuts for all nodes, assign cost, and find best cuts
clk = clock();
pMemCuts = Dar_ManComputeCuts( pAig, 10, 0 );
p->timeCuts = clock() - clk;
// find the mapping
clk = clock();
Cnf_DeriveMapping( p );
p->timeMap = clock() - clk;
// Aig_ManScanMapping( p, 1 );
// convert it into CNF
clk = clock();
Cnf_ManTransferCuts( p );
vMapped = Cnf_ManScanMapping( p, 1, 1 );
pCnf = Cnf_ManWriteCnf( p, vMapped, nOutputs );
Vec_PtrFree( vMapped );
Aig_MmFixedStop( pMemCuts, 0 );
p->timeSave = clock() - clk;
// reset reference counters
Aig_ManResetRefs( pAig );
//PRT( "Cuts ", p->timeCuts );
//PRT( "Map ", p->timeMap );
//PRT( "Saving ", p->timeSave );
return pCnf;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Cnf_Man_t * Cnf_ManRead()
{
return s_pManCnf;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Cnf_ClearMemory()
{
if ( s_pManCnf == NULL )
return;
Cnf_ManStop( s_pManCnf );
s_pManCnf = NULL;
}
#if 0
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Cnf_Dat_t * Cnf_Derive_old( Aig_Man_t * pAig )
{
/*
// iteratively improve area flow
for ( i = 0; i < nIters; i++ )
{
clk = clock();
Cnf_ManScanMapping( p, 0 );
Cnf_ManMapForCnf( p );
PRT( "iter ", clock() - clk );
}
*/
// write the file
vMapped = Aig_ManScanMapping( p, 1 );
Vec_PtrFree( vMapped );
clk = clock();
Cnf_ManTransferCuts( p );
Cnf_ManPostprocess( p );
Cnf_ManScanMapping( p, 0 );
/*
Cnf_ManPostprocess( p );
Cnf_ManScanMapping( p, 0 );
Cnf_ManPostprocess( p );
Cnf_ManScanMapping( p, 0 );
*/
PRT( "Ext ", clock() - clk );
/*
vMapped = Cnf_ManScanMapping( p, 1 );
pCnf = Cnf_ManWriteCnf( p, vMapped );
Vec_PtrFree( vMapped );
// clean up
Cnf_ManFreeCuts( p );
Dar_ManCutsFree( pAig );
return pCnf;
*/
Aig_MmFixedStop( pMemCuts, 0 );
return NULL;
}
#endif
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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