NAME

existbddnodeassocoff - computes an existantial quantification.

See the file buster/alliance/alc_origin.1.en.gz.

SYNOPSYS

#include "bdd101.h"
bddnode ∗existbddnodeassocoff( BddSystem, BddNode, BddAssoc )


  bddsystem ∗BddSystem;


  bddnode   ∗BddNode;


  bddassoc  ∗BddAssoc;

PARAMETERS

BddSystem: The bdd system.
BddNode: The bdd node to treat.
BddAssoc: The variable association.

DESCRIPTION

existbddnodeassocoff suppress in the bdd node BddNode complemented, all the variables associated with something in the variable association BddAssoc, in the bdd system BddSystem. If a null pointer is given, the default bdd system is used.

RETURN VALUE

existbddnodeassocoff returns the computed bdd node.

ERRORS

"bad variable association xxx, error !"

The BddAssoc parameter must a valid variable association.

EXAMPLE

#include "bdd101.h"


   bddsystem  ∗BddSystem;


   bddcircuit ∗BddCircuit;


   bddnode    ∗BddNode;


   bddnode    ∗BddSubst;


   bddnode    ∗BddVariable;


   bddassoc   ∗Assoc;


   chain_list ∗Expr;


   bddvar         Variable;


   BddSystem  = createbddsystem( 100, 1000, 100, 50000 );


   BddCircuit = createbddcircuit( "hello_world", 10, 10, BddSystem );


   Expr = createablbinexpr( ABL_NAND,


                            createablatom( "i0" ),


                            createablatom( "i1" ) );


   BddNode = addbddcircuitabl( BddCircuit, Expr );


   freeablexpr( Expr );


   BddVariable = searchbddcircuitin( (bddcircuit ∗)0, "i0" );


   Variable = getbddvarbyindex( (bddsystem ∗)0, BddVariable->INDEX );


   Assoc = addbddassoc( (bddsystem ∗)0 );


   addbddnodeassoc( (bddsystem ∗)0, Assoc, Variable, BddSystem->ONE );


   BddNode = existbddnodeassocoff( (bddsystem ∗)0, BddNode, Assoc );


   Expr = convertbddcircuitabl( BddCircuit, BddNode );


   /* displays (not i1) */


   viewablexpr( Expr, ABL_VIEW_VHDL );


   freeablexpr( Expr );


   destroybddassoc( (bddsystem ∗)0 );


   destroybddsystem( (bddsystem ∗)0 );


   destroybddcircuit( (bddcircuit ∗)0 );