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/**CFile****************************************************************
FileName [sfmNtk.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [SAT-based optimization using internal don't-cares.]
Synopsis [Logic network.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: sfmNtk.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
***********************************************************************/
#include "sfmInt.h"
ABC_NAMESPACE_IMPL_START
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sfm_CheckConsistency( Vec_Wec_t * vFanins, int nPis, int nPos, Vec_Str_t * vFixed )
{
Vec_Int_t * vArray;
int i, k, Fanin;
// check entries
Vec_WecForEachLevel( vFanins, vArray, i )
{
// PIs have no fanins
if ( i < nPis )
assert( Vec_IntSize(vArray) == 0 && Vec_StrEntry(vFixed, i) == (char)0 );
// nodes are in a topo order; POs cannot be fanins
Vec_IntForEachEntry( vArray, Fanin, k )
assert( Fanin < i && Fanin + nPos < Vec_WecSize(vFanins) );
// POs have one fanout
if ( i + nPos >= Vec_WecSize(vFanins) )
assert( Vec_IntSize(vArray) == 1 && Vec_StrEntry(vFixed, i) == (char)0 );
}
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Wec_t * Sfm_CreateFanout( Vec_Wec_t * vFanins )
{
Vec_Wec_t * vFanouts;
Vec_Int_t * vArray;
int i, k, Fanin;
// count fanouts
vFanouts = Vec_WecStart( Vec_WecSize(vFanins) );
Vec_WecForEachLevel( vFanins, vArray, i )
Vec_IntForEachEntry( vArray, Fanin, k )
Vec_WecEntry( vFanouts, Fanin )->nSize++;
// allocate fanins
Vec_WecForEachLevel( vFanouts, vArray, i )
{
k = vArray->nSize; vArray->nSize = 0;
Vec_IntGrow( vArray, k );
}
// add fanouts
Vec_WecForEachLevel( vFanins, vArray, i )
Vec_IntForEachEntry( vArray, Fanin, k )
Vec_IntPush( Vec_WecEntry( vFanouts, Fanin ), i );
// verify
Vec_WecForEachLevel( vFanins, vArray, i )
assert( Vec_IntSize(vArray) == Vec_IntCap(vArray) );
return vFanouts;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Int_t * Sfm_CreateLevel( Vec_Wec_t * vFanins )
{
Vec_Int_t * vLevels;
Vec_Int_t * vArray;
int i, k, Fanin, * pLevels;
vLevels = Vec_IntStart( Vec_WecSize(vFanins) );
pLevels = Vec_IntArray( vLevels );
Vec_WecForEachLevel( vFanins, vArray, i )
Vec_IntForEachEntry( vArray, Fanin, k )
pLevels[i] = Abc_MaxInt( pLevels[i], pLevels[Fanin] + 1 );
return vLevels;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Wec_t * Sfm_CreateCnf( Sfm_Ntk_t * p )
{
Vec_Wec_t * vCnfs;
Vec_Str_t * vCnf, * vCnfBase;
word uTruth;
int i;
vCnf = Vec_StrAlloc( 100 );
vCnfs = Vec_WecStart( p->nObjs );
Vec_WrdForEachEntryStartStop( p->vTruths, uTruth, i, p->nPis, Vec_WrdSize(p->vTruths)-p->nPos )
{
Sfm_TruthToCnf( uTruth, Vec_IntSize(Vec_WecEntry(p->vFanins, i)), p->vCover, vCnf );
vCnfBase = (Vec_Str_t *)Vec_WecEntry( vCnfs, i );
Vec_StrGrow( vCnfBase, Vec_StrSize(vCnf) );
memcpy( Vec_StrArray(vCnfBase), Vec_StrArray(vCnf), Vec_StrSize(vCnf) );
vCnfBase->nSize = Vec_StrSize(vCnf);
}
Vec_StrFree( vCnf );
return vCnfs;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Sfm_Ntk_t * Sfm_NtkConstruct( Vec_Wec_t * vFanins, int nPis, int nPos, Vec_Str_t * vFixed, Vec_Wrd_t * vTruths )
{
Sfm_Ntk_t * p;
Sfm_CheckConsistency( vFanins, nPis, nPos, vFixed );
p = ABC_CALLOC( Sfm_Ntk_t, 1 );
p->nObjs = Vec_WecSize( vFanins );
p->nPis = nPis;
p->nPos = nPos;
p->nNodes = p->nObjs - p->nPis - p->nPos;
p->vFanins = vFanins;
// user data
p->vFixed = vFixed;
p->vTruths = vTruths;
// attributes
p->vFanouts = Sfm_CreateFanout( vFanins );
p->vLevels = Sfm_CreateLevel( vFanins );
Vec_IntFill( &p->vTravIds, p->nObjs, 0 );
Vec_IntFill( &p->vId2Var, p->nObjs, -1 );
Vec_IntFill( &p->vVar2Id, p->nObjs, -1 );
p->vCover = Vec_IntAlloc( 1 << 16 );
p->vCnfs = Sfm_CreateCnf( p );
return p;
}
void Sfm_NtkFree( Sfm_Ntk_t * p )
{
// user data
Vec_WecFree( p->vFanins );
Vec_StrFree( p->vFixed );
Vec_WrdFree( p->vTruths );
// attributes
Vec_WecFree( p->vFanouts );
Vec_IntFree( p->vLevels );
ABC_FREE( p->vTravIds.pArray );
ABC_FREE( p->vId2Var.pArray );
ABC_FREE( p->vVar2Id.pArray );
Vec_WecFree( p->vCnfs );
Vec_IntFree( p->vCover );
// other data
Vec_IntFreeP( &p->vLeaves );
Vec_IntFreeP( &p->vRoots );
Vec_IntFreeP( &p->vNodes );
Vec_IntFreeP( &p->vTfo );
Vec_IntFreeP( &p->vDivs );
Vec_IntFreeP( &p->vLits );
Vec_WecFreeP( &p->vClauses );
Vec_IntFreeP( &p->vFaninMap );
if ( p->pSat0 ) sat_solver_delete( p->pSat0 );
if ( p->pSat1 ) sat_solver_delete( p->pSat1 );
ABC_FREE( p );
}
/**Function*************************************************************
Synopsis [Public APIs of this network.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Int_t * Sfm_NodeReadFanins( Sfm_Ntk_t * p, int i )
{
return Vec_WecEntry( p->vFanins, i );
}
word Sfm_NodeReadTruth( Sfm_Ntk_t * p, int i )
{
return Vec_WrdEntry( p->vTruths, i );
}
int Sfm_NodeReadFixed( Sfm_Ntk_t * p, int i )
{
return (int)Vec_StrEntry( p->vFixed, i );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
ABC_NAMESPACE_IMPL_END
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