SYNOPSYS

#include "bdd101.h"
bddnode *implybddnode( 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

implybddnode tests if the intersection of BddNode1 and not BddNode2, exists, in the bdd system BddSystem. If a null pointer is given, the default bdd system is used.

RETURN VALUE

implybddnode returns the bdd node zero if there is no intersection, and a computed bdd node otherwise.

EXAMPLE

#include "bdd101.h"
   bddsystem  *BddSystem;
   bddcircuit *BddCircuit;
   bddnode    *BddNode1;
   bddnode    *BddNode2;
   bddnode    *BddImply;
   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" ) );
   BddNode1 = addbddcircuitabl( BddCircuit, Expr );
   freeablexpr( Expr );
   BddImply = implybddnode( (bddsystem *)0, BddNode1, BddNode2 );
   Expr = convertbddcircuitabl( BddCircuit, BddNode );
   /* displays (i0 and (not i1)) */
   viewablexpr( Expr, ABL_VIEW_VHDL );
   freeablexpr( Expr );
   destroybddsystem( (bddsystem *)0 );
   destroybddcircuit( (bddcircuit *)0 );