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authorAlan Mishchenko <alanmi@berkeley.edu>2007-09-30 08:01:00 -0700
committerAlan Mishchenko <alanmi@berkeley.edu>2007-09-30 08:01:00 -0700
commite54d9691616b9a0326e2fdb3156bb4eeb8abfcd7 (patch)
treede3ffe87c3e17950351e3b7d97fa18318bd5ea9a /src/opt/lpk/lpkCut.c
parent7d7e60f2dc84393cd4c5db22d2eaf7b1fb1a79b2 (diff)
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-/**CFile****************************************************************
-
- FileName [lpkCut.c]
-
- SystemName [ABC: Logic synthesis and verification system.]
-
- PackageName [Fast Boolean matching for LUT structures.]
-
- Synopsis []
-
- Author [Alan Mishchenko]
-
- Affiliation [UC Berkeley]
-
- Date [Ver. 1.0. Started - April 28, 2007.]
-
- Revision [$Id: lpkCut.c,v 1.00 2007/04/28 00:00:00 alanmi Exp $]
-
-***********************************************************************/
-
-#include "lpkInt.h"
-#include "cloud.h"
-
-////////////////////////////////////////////////////////////////////////
-/// DECLARATIONS ///
-////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////
-/// FUNCTION DEFINITIONS ///
-////////////////////////////////////////////////////////////////////////
-
-/**Function*************************************************************
-
- Synopsis [Computes the truth table of one cut.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-CloudNode * Lpk_CutTruthBdd_rec( CloudManager * dd, Hop_Man_t * pMan, Hop_Obj_t * pObj, int nVars )
-{
- CloudNode * pTruth, * pTruth0, * pTruth1;
- assert( !Hop_IsComplement(pObj) );
- if ( pObj->pData )
- {
- assert( ((unsigned)pObj->pData) & 0xffff0000 );
- return pObj->pData;
- }
- // get the plan for a new truth table
- if ( Hop_ObjIsConst1(pObj) )
- pTruth = dd->one;
- else
- {
- assert( Hop_ObjIsAnd(pObj) );
- // compute the truth tables of the fanins
- pTruth0 = Lpk_CutTruthBdd_rec( dd, pMan, Hop_ObjFanin0(pObj), nVars );
- pTruth1 = Lpk_CutTruthBdd_rec( dd, pMan, Hop_ObjFanin1(pObj), nVars );
- pTruth0 = Cloud_NotCond( pTruth0, Hop_ObjFaninC0(pObj) );
- pTruth1 = Cloud_NotCond( pTruth1, Hop_ObjFaninC1(pObj) );
- // creat the truth table of the node
- pTruth = Cloud_bddAnd( dd, pTruth0, pTruth1 );
- }
- pObj->pData = pTruth;
- return pTruth;
-}
-
-/**Function*************************************************************
-
- Synopsis [Verifies that the factoring is correct.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-CloudNode * Lpk_CutTruthBdd( Lpk_Man_t * p, Lpk_Cut_t * pCut )
-{
- CloudManager * dd = p->pDsdMan->dd;
- Hop_Man_t * pManHop = p->pNtk->pManFunc;
- Hop_Obj_t * pObjHop;
- Abc_Obj_t * pObj, * pFanin;
- CloudNode * pTruth;
- int i, k, iCount = 0;
-
-// return NULL;
-// Lpk_NodePrintCut( p, pCut );
- // initialize the leaves
- Lpk_CutForEachLeaf( p->pNtk, pCut, pObj, i )
- pObj->pCopy = (Abc_Obj_t *)dd->vars[pCut->nLeaves-1-i];
-
- // construct truth table in the topological order
- Lpk_CutForEachNodeReverse( p->pNtk, pCut, pObj, i )
- {
- // get the local AIG
- pObjHop = Hop_Regular(pObj->pData);
- // clean the data field of the nodes in the AIG subgraph
- Hop_ObjCleanData_rec( pObjHop );
- // set the initial truth tables at the fanins
- Abc_ObjForEachFanin( pObj, pFanin, k )
- {
- assert( ((unsigned)pFanin->pCopy) & 0xffff0000 );
- Hop_ManPi( pManHop, k )->pData = pFanin->pCopy;
- }
- // compute the truth table of internal nodes
- pTruth = Lpk_CutTruthBdd_rec( dd, pManHop, pObjHop, pCut->nLeaves );
- if ( Hop_IsComplement(pObj->pData) )
- pTruth = Cloud_Not(pTruth);
- // set the truth table at the node
- pObj->pCopy = (Abc_Obj_t *)pTruth;
-
- }
-
-// Cloud_bddPrint( dd, pTruth );
-// printf( "Bdd size = %d. Total nodes = %d.\n", Cloud_DagSize( dd, pTruth ), dd->nNodesCur-dd->nVars-1 );
- return pTruth;
-}
-
-
-/**Function*************************************************************
-
- Synopsis [Computes the truth table of one cut.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-unsigned * Lpk_CutTruth_rec( Hop_Man_t * pMan, Hop_Obj_t * pObj, int nVars, Vec_Ptr_t * vTtNodes, int * piCount )
-{
- unsigned * pTruth, * pTruth0, * pTruth1;
- assert( !Hop_IsComplement(pObj) );
- if ( pObj->pData )
- {
- assert( ((unsigned)pObj->pData) & 0xffff0000 );
- return pObj->pData;
- }
- // get the plan for a new truth table
- pTruth = Vec_PtrEntry( vTtNodes, (*piCount)++ );
- if ( Hop_ObjIsConst1(pObj) )
- Kit_TruthFill( pTruth, nVars );
- else
- {
- assert( Hop_ObjIsAnd(pObj) );
- // compute the truth tables of the fanins
- pTruth0 = Lpk_CutTruth_rec( pMan, Hop_ObjFanin0(pObj), nVars, vTtNodes, piCount );
- pTruth1 = Lpk_CutTruth_rec( pMan, Hop_ObjFanin1(pObj), nVars, vTtNodes, piCount );
- // creat the truth table of the node
- Kit_TruthAndPhase( pTruth, pTruth0, pTruth1, nVars, Hop_ObjFaninC0(pObj), Hop_ObjFaninC1(pObj) );
- }
- pObj->pData = pTruth;
- return pTruth;
-}
-
-/**Function*************************************************************
-
- Synopsis [Computes the truth able of one cut.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-unsigned * Lpk_CutTruth( Lpk_Man_t * p, Lpk_Cut_t * pCut, int fInv )
-{
- Hop_Man_t * pManHop = p->pNtk->pManFunc;
- Hop_Obj_t * pObjHop;
- Abc_Obj_t * pObj, * pFanin;
- unsigned * pTruth;
- int i, k, iCount = 0;
-// Lpk_NodePrintCut( p, pCut );
- assert( pCut->nNodes > 0 );
-
- // initialize the leaves
- Lpk_CutForEachLeaf( p->pNtk, pCut, pObj, i )
- pObj->pCopy = Vec_PtrEntry( p->vTtElems, fInv? pCut->nLeaves-1-i : i );
-
- // construct truth table in the topological order
- Lpk_CutForEachNodeReverse( p->pNtk, pCut, pObj, i )
- {
- // get the local AIG
- pObjHop = Hop_Regular(pObj->pData);
- // clean the data field of the nodes in the AIG subgraph
- Hop_ObjCleanData_rec( pObjHop );
- // set the initial truth tables at the fanins
- Abc_ObjForEachFanin( pObj, pFanin, k )
- {
- assert( ((unsigned)pFanin->pCopy) & 0xffff0000 );
- Hop_ManPi( pManHop, k )->pData = pFanin->pCopy;
- }
- // compute the truth table of internal nodes
- pTruth = Lpk_CutTruth_rec( pManHop, pObjHop, pCut->nLeaves, p->vTtNodes, &iCount );
- if ( Hop_IsComplement(pObj->pData) )
- Kit_TruthNot( pTruth, pTruth, pCut->nLeaves );
- // set the truth table at the node
- pObj->pCopy = (Abc_Obj_t *)pTruth;
- }
-
- // make sure direct truth table is stored elsewhere (assuming the first call for direct truth!!!)
- if ( fInv == 0 )
- {
- pTruth = Vec_PtrEntry( p->vTtNodes, iCount++ );
- Kit_TruthCopy( pTruth, (unsigned *)pObj->pCopy, pCut->nLeaves );
- }
- assert( iCount <= Vec_PtrSize(p->vTtNodes) );
- return pTruth;
-}
-
-
-/**Function*************************************************************
-
- Synopsis [Returns 1 if at least one entry has changed.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-void Lpk_NodeRecordImpact( Lpk_Man_t * p )
-{
- Lpk_Cut_t * pCut;
- Vec_Ptr_t * vNodes = Vec_VecEntry( p->vVisited, p->pObj->Id );
- Abc_Obj_t * pNode;
- int i, k;
- // collect the nodes that impact the given node
- Vec_PtrClear( vNodes );
- for ( i = 0; i < p->nCuts; i++ )
- {
- pCut = p->pCuts + i;
- for ( k = 0; k < (int)pCut->nLeaves; k++ )
- {
- pNode = Abc_NtkObj( p->pNtk, pCut->pLeaves[k] );
- if ( pNode->fMarkC )
- continue;
- pNode->fMarkC = 1;
- Vec_PtrPush( vNodes, (void *)pNode->Id );
- Vec_PtrPush( vNodes, (void *)Abc_ObjFanoutNum(pNode) );
- }
- }
- // clear the marks
- Vec_PtrForEachEntry( vNodes, pNode, i )
- {
- pNode = Abc_NtkObj( p->pNtk, (int)pNode );
- pNode->fMarkC = 0;
- i++;
- }
-//printf( "%d ", Vec_PtrSize(vNodes) );
-}
-
-/**Function*************************************************************
-
- Synopsis [Returns 1 if the cut has structural DSD.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-int Lpk_NodeCutsCheckDsd( Lpk_Man_t * p, Lpk_Cut_t * pCut )
-{
- Abc_Obj_t * pObj, * pFanin;
- int i, k, nCands, fLeavesOnly, RetValue;
- assert( pCut->nLeaves > 0 );
- // clear ref counters
- memset( p->pRefs, 0, sizeof(int) * pCut->nLeaves );
- // mark cut leaves
- Lpk_CutForEachLeaf( p->pNtk, pCut, pObj, i )
- {
- assert( pObj->fMarkA == 0 );
- pObj->fMarkA = 1;
- pObj->pCopy = (void *)i;
- }
- // ref leaves pointed from the internal nodes
- nCands = 0;
- Lpk_CutForEachNode( p->pNtk, pCut, pObj, i )
- {
- fLeavesOnly = 1;
- Abc_ObjForEachFanin( pObj, pFanin, k )
- if ( pFanin->fMarkA )
- p->pRefs[(int)pFanin->pCopy]++;
- else
- fLeavesOnly = 0;
- if ( fLeavesOnly )
- p->pCands[nCands++] = pObj->Id;
- }
- // look at the nodes that only point to the leaves
- RetValue = 0;
- for ( i = 0; i < nCands; i++ )
- {
- pObj = Abc_NtkObj( p->pNtk, p->pCands[i] );
- Abc_ObjForEachFanin( pObj, pFanin, k )
- {
- assert( pFanin->fMarkA == 1 );
- if ( p->pRefs[(int)pFanin->pCopy] > 1 )
- break;
- }
- if ( k == Abc_ObjFaninNum(pObj) )
- {
- RetValue = 1;
- break;
- }
- }
- // unmark cut leaves
- Lpk_CutForEachLeaf( p->pNtk, pCut, pObj, i )
- pObj->fMarkA = 0;
- return RetValue;
-}
-
-/**Function*************************************************************
-
- Synopsis [Returns 1 if pDom is contained in pCut.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-static inline int Lpk_NodeCutsOneDominance( Lpk_Cut_t * pDom, Lpk_Cut_t * pCut )
-{
- int i, k;
- for ( i = 0; i < (int)pDom->nLeaves; i++ )
- {
- for ( k = 0; k < (int)pCut->nLeaves; k++ )
- if ( pDom->pLeaves[i] == pCut->pLeaves[k] )
- break;
- if ( k == (int)pCut->nLeaves ) // node i in pDom is not contained in pCut
- return 0;
- }
- // every node in pDom is contained in pCut
- return 1;
-}
-
-/**Function*************************************************************
-
- Synopsis [Check if the cut exists.]
-
- Description [Returns 1 if the cut exists.]
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-int Lpk_NodeCutsOneFilter( Lpk_Cut_t * pCuts, int nCuts, Lpk_Cut_t * pCutNew )
-{
- Lpk_Cut_t * pCut;
- int i, k;
- assert( pCutNew->uSign[0] || pCutNew->uSign[1] );
- // try to find the cut
- for ( i = 0; i < nCuts; i++ )
- {
- pCut = pCuts + i;
- if ( pCut->nLeaves == 0 )
- continue;
- if ( pCut->nLeaves == pCutNew->nLeaves )
- {
- if ( pCut->uSign[0] == pCutNew->uSign[0] && pCut->uSign[1] == pCutNew->uSign[1] )
- {
- for ( k = 0; k < (int)pCutNew->nLeaves; k++ )
- if ( pCut->pLeaves[k] != pCutNew->pLeaves[k] )
- break;
- if ( k == (int)pCutNew->nLeaves )
- return 1;
- }
- continue;
- }
- if ( pCut->nLeaves < pCutNew->nLeaves )
- {
- // skip the non-contained cuts
- if ( (pCut->uSign[0] & pCutNew->uSign[0]) != pCut->uSign[0] )
- continue;
- if ( (pCut->uSign[1] & pCutNew->uSign[1]) != pCut->uSign[1] )
- continue;
- // check containment seriously
- if ( Lpk_NodeCutsOneDominance( pCut, pCutNew ) )
- return 1;
- continue;
- }
- // check potential containment of other cut
-
- // skip the non-contained cuts
- if ( (pCut->uSign[0] & pCutNew->uSign[0]) != pCutNew->uSign[0] )
- continue;
- if ( (pCut->uSign[1] & pCutNew->uSign[1]) != pCutNew->uSign[1] )
- continue;
- // check containment seriously
- if ( Lpk_NodeCutsOneDominance( pCutNew, pCut ) )
- pCut->nLeaves = 0; // removed
- }
- return 0;
-}
-
-/**Function*************************************************************
-
- Synopsis [Prints the given cut.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-void Lpk_NodePrintCut( Lpk_Man_t * p, Lpk_Cut_t * pCut, int fLeavesOnly )
-{
- Abc_Obj_t * pObj;
- int i;
- if ( !fLeavesOnly )
- printf( "LEAVES:\n" );
- Lpk_CutForEachLeaf( p->pNtk, pCut, pObj, i )
- printf( "%d,", pObj->Id );
- if ( !fLeavesOnly )
- {
- printf( "\nNODES:\n" );
- Lpk_CutForEachNode( p->pNtk, pCut, pObj, i )
- {
- printf( "%d,", pObj->Id );
- assert( Abc_ObjIsNode(pObj) );
- }
- printf( "\n" );
- }
-}
-
-/**Function*************************************************************
-
- Synopsis [Set the cut signature.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-void Lpk_NodeCutSignature( Lpk_Cut_t * pCut )
-{
- unsigned i;
- pCut->uSign[0] = pCut->uSign[1] = 0;
- for ( i = 0; i < pCut->nLeaves; i++ )
- {
- pCut->uSign[(pCut->pLeaves[i] & 32) > 0] |= (1 << (pCut->pLeaves[i] & 31));
- if ( i != pCut->nLeaves - 1 )
- assert( pCut->pLeaves[i] < pCut->pLeaves[i+1] );
- }
-}
-
-
-/**Function*************************************************************
-
- Synopsis [Computes the set of all cuts.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-void Lpk_NodeCutsOne( Lpk_Man_t * p, Lpk_Cut_t * pCut, int Node )
-{
- Lpk_Cut_t * pCutNew;
- Abc_Obj_t * pObj, * pFanin;
- int i, k, j, nLeavesNew;
-/*
- printf( "Exploring cut " );
- Lpk_NodePrintCut( p, pCut, 1 );
- printf( "with node %d\n", Node );
-*/
- // check if the cut can stand adding one more internal node
- if ( pCut->nNodes == LPK_SIZE_MAX )
- return;
-
- // if the node is a PI, quit
- pObj = Abc_NtkObj( p->pNtk, Node );
- if ( Abc_ObjIsCi(pObj) )
- return;
- assert( Abc_ObjIsNode(pObj) );
- assert( Abc_ObjFaninNum(pObj) <= p->pPars->nLutSize );
-
- // if the node is not in the MFFC, check the limit
- if ( !Abc_NodeIsTravIdCurrent(pObj) )
- {
- if ( (int)pCut->nNodesDup == p->pPars->nLutsOver )
- return;
- assert( (int)pCut->nNodesDup < p->pPars->nLutsOver );
- }
-
- // check the possibility of adding this node using the signature
- nLeavesNew = pCut->nLeaves - 1;
- Abc_ObjForEachFanin( pObj, pFanin, i )
- {
- if ( (pCut->uSign[(pFanin->Id & 32) > 0] & (1 << (pFanin->Id & 31))) )
- continue;
- if ( ++nLeavesNew > p->pPars->nVarsMax )
- return;
- }
-
- // initialize the set of leaves to the nodes in the cut
- assert( p->nCuts < LPK_CUTS_MAX );
- pCutNew = p->pCuts + p->nCuts;
- pCutNew->nLeaves = 0;
- for ( i = 0; i < (int)pCut->nLeaves; i++ )
- if ( pCut->pLeaves[i] != Node )
- pCutNew->pLeaves[pCutNew->nLeaves++] = pCut->pLeaves[i];
-
- // add new nodes
- Abc_ObjForEachFanin( pObj, pFanin, i )
- {
- // find the place where this node belongs
- for ( k = 0; k < (int)pCutNew->nLeaves; k++ )
- if ( pCutNew->pLeaves[k] >= pFanin->Id )
- break;
- if ( k < (int)pCutNew->nLeaves && pCutNew->pLeaves[k] == pFanin->Id )
- continue;
- // check if there is room
- if ( (int)pCutNew->nLeaves == p->pPars->nVarsMax )
- return;
- // move all the nodes
- for ( j = pCutNew->nLeaves; j > k; j-- )
- pCutNew->pLeaves[j] = pCutNew->pLeaves[j-1];
- pCutNew->pLeaves[k] = pFanin->Id;
- pCutNew->nLeaves++;
- assert( pCutNew->nLeaves <= LPK_SIZE_MAX );
-
- }
- // skip the contained cuts
- Lpk_NodeCutSignature( pCutNew );
- if ( Lpk_NodeCutsOneFilter( p->pCuts, p->nCuts, pCutNew ) )
- return;
-
- // update the set of internal nodes
- assert( pCut->nNodes < LPK_SIZE_MAX );
- memcpy( pCutNew->pNodes, pCut->pNodes, pCut->nNodes * sizeof(int) );
- pCutNew->nNodes = pCut->nNodes;
- pCutNew->nNodesDup = pCut->nNodesDup;
-
- // check if the node is already there
- // if so, move the node to be the last
- for ( i = 0; i < (int)pCutNew->nNodes; i++ )
- if ( pCutNew->pNodes[i] == Node )
- {
- for ( k = i; k < (int)pCutNew->nNodes - 1; k++ )
- pCutNew->pNodes[k] = pCutNew->pNodes[k+1];
- pCutNew->pNodes[k] = Node;
- break;
- }
- if ( i == (int)pCutNew->nNodes ) // new node
- {
- pCutNew->pNodes[ pCutNew->nNodes++ ] = Node;
- pCutNew->nNodesDup += !Abc_NodeIsTravIdCurrent(pObj);
- }
- // the number of nodes does not exceed MFFC plus duplications
- assert( pCutNew->nNodes <= p->nMffc + pCutNew->nNodesDup );
- // add the cut to storage
- assert( p->nCuts < LPK_CUTS_MAX );
- p->nCuts++;
-}
-
-/**Function*************************************************************
-
- Synopsis [Computes the set of all cuts.]
-
- Description []
-
- SideEffects []
-
- SeeAlso []
-
-***********************************************************************/
-int Lpk_NodeCuts( Lpk_Man_t * p )
-{
- Lpk_Cut_t * pCut, * pCut2;
- int i, k, Temp, nMffc, fChanges;
-
- // mark the MFFC of the node with the current trav ID
- nMffc = p->nMffc = Abc_NodeMffcLabel( p->pObj );
- assert( nMffc > 0 );
- if ( nMffc == 1 )
- return 0;
-
- // initialize the first cut
- pCut = p->pCuts; p->nCuts = 1;
- pCut->nNodes = 0;
- pCut->nNodesDup = 0;
- pCut->nLeaves = 1;
- pCut->pLeaves[0] = p->pObj->Id;
- // assign the signature
- Lpk_NodeCutSignature( pCut );
-
- // perform the cut computation
- for ( i = 0; i < p->nCuts; i++ )
- {
- pCut = p->pCuts + i;
- if ( pCut->nLeaves == 0 )
- continue;
-
- // try to expand the fanins of this cut
- for ( k = 0; k < (int)pCut->nLeaves; k++ )
- {
- // create a new cut
- Lpk_NodeCutsOne( p, pCut, pCut->pLeaves[k] );
- // quit if the number of cuts has exceeded the limit
- if ( p->nCuts == LPK_CUTS_MAX )
- break;
- }
- if ( p->nCuts == LPK_CUTS_MAX )
- break;
- }
- if ( p->nCuts == LPK_CUTS_MAX )
- p->nNodesOver++;
-
- // record the impact of this node
- if ( p->pPars->fSatur )
- Lpk_NodeRecordImpact( p );
-
- // compress the cuts by removing empty ones, those with negative Weight, and decomposable ones
- p->nEvals = 0;
- for ( i = 0; i < p->nCuts; i++ )
- {
- pCut = p->pCuts + i;
- if ( pCut->nLeaves < 2 )
- continue;
- // compute the minimum number of LUTs needed to implement this cut
- // V = N * (K-1) + 1 ~~~~~ N = Ceiling[(V-1)/(K-1)] = (V-1)/(K-1) + [(V-1)%(K-1) > 0]
- pCut->nLuts = Lpk_LutNumLuts( pCut->nLeaves, p->pPars->nLutSize );
-// pCut->Weight = (float)1.0 * (pCut->nNodes - pCut->nNodesDup - 1) / pCut->nLuts; //p->pPars->nLutsMax;
- pCut->Weight = (float)1.0 * (pCut->nNodes - pCut->nNodesDup) / pCut->nLuts; //p->pPars->nLutsMax;
- if ( pCut->Weight <= 1.001 )
-// if ( pCut->Weight <= 0.999 )
- continue;
- pCut->fHasDsd = Lpk_NodeCutsCheckDsd( p, pCut );
- if ( pCut->fHasDsd )
- continue;
- p->pEvals[p->nEvals++] = i;
- }
- if ( p->nEvals == 0 )
- return 0;
-
- // sort the cuts by Weight
- do {
- fChanges = 0;
- for ( i = 0; i < p->nEvals - 1; i++ )
- {
- pCut = p->pCuts + p->pEvals[i];
- pCut2 = p->pCuts + p->pEvals[i+1];
- if ( pCut->Weight >= pCut2->Weight - 0.001 )
- continue;
- Temp = p->pEvals[i];
- p->pEvals[i] = p->pEvals[i+1];
- p->pEvals[i+1] = Temp;
- fChanges = 1;
- }
- } while ( fChanges );
-/*
- for ( i = 0; i < p->nEvals; i++ )
- {
- pCut = p->pCuts + p->pEvals[i];
- printf( "Cut %3d : W = %5.2f.\n", i, pCut->Weight );
- }
- printf( "\n" );
-*/
- return 1;
-}
-
-////////////////////////////////////////////////////////////////////////
-/// END OF FILE ///
-////////////////////////////////////////////////////////////////////////
-
-