SYNOPSYS

#include "bdd101.h"
bddnode *cofactorbddnode( BddSystem, BddNode1, BddNode2 )
  bddsystem *BddSystem;
  bddnode   *BddNode1;
  bddnode   *BddNode2;

PARAMETERS

BddSystem

The bdd system.

BddNode1

The first bdd node.

BddNode2

The second bdd node.

DESCRIPTION

cofactorbddnode computes the generalized cofactor of BddNode1 by BddNode2, in the bdd system BddSystem. If a null pointer is given, the default bdd system is used.

RETURN VALUE

cofactorbddnode returns the resulting bdd node.

EXAMPLE

#include "bdd101.h"
   bddsystem  *BddSystem;
   bddcircuit *BddCircuit;
   bddnode    *BddNode1;
   bddnode    *BddNode2;
   bddnode    *BddNode;
   chain_list *Expr;
   BddSystem  = createbddsystem( 100, 1000, 100, 50000 );
   BddCircuit = createbddcircuit( "hello_world", 10, 10, BddSystem );
   Expr = createablbinexpr( ABL_OR,
                            createablatom( "i0" ),
                            createablatom( "i1" ) );
   BddNode1 = addbddcircuitabl( BddCircuit, Expr );
   freeablexpr( Expr );
   Expr = createablbinexpr( ABL_AND,
                            createablatom( "i0" ),
                            createablatom( "i1" ) );
   BddNode2 = addbddcircuitabl( BddCircuit, Expr );
   freeablexpr( Expr );
   BddNode = cofactorbddnode( (bddsystem *)0, BddNode1, BddNode2 );
   Expr = convertbddcircuitabl( BddCircuit, BddNode );
   /* displays '1' */
   viewablexpr( Expr, ABL_VIEW_VHDL );
   freeablexpr( Expr );
   destroybddsystem( (bddsystem *)0 );
   destroybddcircuit( (bddcircuit *)0 );