Scroll to navigation

EXISTBDDNODEASSOCOFF(3) BDD FUNCTIONS EXISTBDDNODEASSOCOFF(3)

NAME

existbddnodeassocoff - computes an existantial quantification.

ORIGIN

This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Université Pierre et Marie CURIE, in Paris, France.

Web : http://asim.lip6.fr/recherche/alliance/
E-mail : alliance-users@asim.lip6.fr

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 );

SEE ALSO

bdd(1)

BUG REPORT

This tool is under development at the ASIM department of the LIP6 laboratory.
We need your feedback to improve documentation and tools.

October 1, 1997 ASIM/LIP6