Exemple #1
0
/**Function*************************************************************

  Synopsis    [Updates after accepting single cube divisor.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
void Fxu_UpdateSingle( Fxu_Matrix * p )
{
    Fxu_Single * pSingle;
	Fxu_Cube * pCube, * pCubeNew;
	Fxu_Var * pVarC, * pVarD;
	Fxu_Var * pVar1, * pVar2;

    // read the best divisor from the heap
    pSingle = Fxu_HeapSingleReadMax( p->pHeapSingle );
    // get the variables of this single-cube divisor
    pVar1 = pSingle->pVar1;
    pVar2 = pSingle->pVar2;

    // create two new columns (vars)
    Fxu_UpdateCreateNewVars( p, &pVarC, &pVarD, 1 );
    // create one new row (cube)
    pCubeNew = Fxu_MatrixAddCube( p, pVarD, 0 );
    pCubeNew->pFirst = pCubeNew;
    // set the first cube
    pVarD->pFirst = pCubeNew;

    // start collecting the affected vars and cubes
    Fxu_MatrixRingCubesStart( p );
    Fxu_MatrixRingVarsStart( p );
    // add the vars
    Fxu_MatrixRingVarsAdd( p, pVar1 );
    Fxu_MatrixRingVarsAdd( p, pVar2 );
    // remove the literals and collect the affected cubes
    // remove the divisors associated with this cube
   	// add to the affected cube the literal corresponding to the new column
	Fxu_UpdateMatrixSingleClean( p, pVar1, pVar2, pVarD );
    // stop collecting the affected vars and cubes
    Fxu_MatrixRingCubesStop( p );
    Fxu_MatrixRingVarsStop( p );

    // add the literals to the new cube
    assert( pVar1->iVar < pVar2->iVar );
    assert( Fxu_SingleCountCoincidence( p, pVar1, pVar2 ) == 0 );
    Fxu_MatrixAddLiteral( p, pCubeNew, pVar1 );
    Fxu_MatrixAddLiteral( p, pCubeNew, pVar2 );

    // create new doubles; we cannot add them in the same loop
	// because we first have to create *all* new cubes for each node
    Fxu_MatrixForEachCubeInRing( p, pCube )
   		Fxu_UpdateAddNewDoubles( p, pCube );
    // update the singles after removing some literals
    Fxu_UpdateCleanOldSingles( p );
    // we should undo the rings before creating new singles

    // unmark the cubes
    Fxu_MatrixRingCubesUnmark( p );
    Fxu_MatrixRingVarsUnmark( p );

    // create new singles
    Fxu_UpdateAddNewSingles( p, pVarC );
    Fxu_UpdateAddNewSingles( p, pVarD );
	p->nDivs1++;
}
Exemple #2
0
/**Function*************************************************************

  Synopsis    [Adds the single-cube divisors associated with a new column.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
void Fxu_MatrixComputeSinglesOne( Fxu_Matrix * p, Fxu_Var * pVar )
{
//    int * pValue2Node = p->pValue2Node;
    Fxu_Lit * pLitV, * pLitH;
    Fxu_Var * pVar2;
    int Coin;
//    int CounterAll;
//    int CounterTest;
    int WeightCur;

    // start collecting the affected vars
    Fxu_MatrixRingVarsStart( p );
    // go through all the literals of this variable
    for ( pLitV = pVar->lLits.pHead; pLitV; pLitV = pLitV->pVNext )
        // for this literal, go through all the horizontal literals
        for ( pLitH = pLitV->pHPrev; pLitH; pLitH = pLitH->pHPrev )
        {
            // get another variable
            pVar2 = pLitH->pVar;
//            CounterAll++;
            // skip the var if it is already used
            if ( pVar2->pOrder )
                continue;
            // skip the var if it belongs to the same node
//            if ( pValue2Node[pVar->iVar] == pValue2Node[pVar2->iVar] )
//                continue;
            // collect the var
            Fxu_MatrixRingVarsAdd( p, pVar2 );
        }
    // stop collecting the selected vars
    Fxu_MatrixRingVarsStop( p );

    // iterate through the selected vars
    Fxu_MatrixForEachVarInRing( p, pVar2 )
    {
//        CounterTest++;
        // count the coincidence
        Coin = Fxu_SingleCountCoincidence( p, pVar2, pVar );
        assert( Coin > 0 );
        // get the new weight
        WeightCur = Coin - 2;
        if ( WeightCur >= 0 )
            Fxu_MatrixAddSingle( p, pVar2, pVar, WeightCur );
    }
Exemple #3
0
/**Function*************************************************************

  Synopsis    [Updates the matrix after selecting two divisors.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
void Fxu_Update( Fxu_Matrix * p, Fxu_Single * pSingle, Fxu_Double * pDouble )
{
	Fxu_Cube * pCube, * pCubeNew;
	Fxu_Var * pVarC, * pVarD;
	Fxu_Var * pVar1, * pVar2;

    // consider trivial cases
    if ( pSingle == NULL )
    {
        assert( pDouble->Weight == Fxu_HeapDoubleReadMaxWeight( p->pHeapDouble ) );
        Fxu_UpdateDouble( p );
        return;
    }
    if ( pDouble == NULL )
    {
        assert( pSingle->Weight == Fxu_HeapSingleReadMaxWeight( p->pHeapSingle ) );
        Fxu_UpdateSingle( p );
        return;
    }

    // get the variables of the single
    pVar1 = pSingle->pVar1;
    pVar2 = pSingle->pVar2;

    // remove the best double from the heap
    Fxu_HeapDoubleDelete( p->pHeapDouble, pDouble );
	// remove the best divisor from the table
	Fxu_ListTableDelDivisor( p, pDouble );

    // create two new columns (vars)
    Fxu_UpdateCreateNewVars( p, &pVarC, &pVarD, 1 );
    // create one new row (cube)
    pCubeNew = Fxu_MatrixAddCube( p, pVarD, 0 );
    pCubeNew->pFirst = pCubeNew;
    // set the first cube of the positive var
    pVarD->pFirst = pCubeNew;

    // start collecting the affected vars and cubes
    Fxu_MatrixRingCubesStart( p );
    Fxu_MatrixRingVarsStart( p );
    // add the vars
    Fxu_MatrixRingVarsAdd( p, pVar1 );
    Fxu_MatrixRingVarsAdd( p, pVar2 );
    // remove the literals and collect the affected cubes
    // remove the divisors associated with this cube
   	// add to the affected cube the literal corresponding to the new column
	Fxu_UpdateMatrixSingleClean( p, pVar1, pVar2, pVarD );
	// replace each two cubes of the pair by one new cube
	// the new cube contains the base and the new literal
    Fxu_UpdateDoublePairs( p, pDouble, pVarC );
    // stop collecting the affected vars and cubes
    Fxu_MatrixRingCubesStop( p );
    Fxu_MatrixRingVarsStop( p );

    // add the literals to the new cube
    assert( pVar1->iVar < pVar2->iVar );
    assert( Fxu_SingleCountCoincidence( p, pVar1, pVar2 ) == 0 );
    Fxu_MatrixAddLiteral( p, pCubeNew, pVar1 );
    Fxu_MatrixAddLiteral( p, pCubeNew, pVar2 );

    // create new doubles; we cannot add them in the same loop
	// because we first have to create *all* new cubes for each node
    Fxu_MatrixForEachCubeInRing( p, pCube )
   		Fxu_UpdateAddNewDoubles( p, pCube );
    // update the singles after removing some literals
    Fxu_UpdateCleanOldSingles( p );

    // undo the temporary rings with cubes and vars
    Fxu_MatrixRingCubesUnmark( p );
    Fxu_MatrixRingVarsUnmark( p );
    // we should undo the rings before creating new singles

    // create new singles
    Fxu_UpdateAddNewSingles( p, pVarC );
    Fxu_UpdateAddNewSingles( p, pVarD );

	// recycle the divisor
	MEM_FREE_FXU( p, Fxu_Double, 1, pDouble );
	p->nDivs3++;
}