Scroll to navigation

ISBDDVARINSUPPORT(3) BDD FUNCTIONS ISBDDVARINSUPPORT(3)

NAME

isbddvarinsupport - tests if a variable appears in a bdd.

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"
int isbddvarinsupport( BddSystem, BddNode, Variable )
  bddsystem ∗BddSystem;
  bddnode   ∗BddNode;
  bddvar     Variable;

PARAMETERS

BddSystem
The bdd system.
BddNode
The bdd node.
Variable
The variable number.

DESCRIPTION

isbddvarinsupport tests if the variable number Variable appears in the support of the bdd node BddNode, in the bdd system BddSystem. If a null pointer is given, the default bdd system is used.

RETURN VALUE

isbddvarinsupport returns 1 if Variable appears, 0 otherwise.

ERRORS

"variable xxx out of range, error !"
The Variable parameter must be less or equal to the BddSystem->NUMBER_VAR field.

EXAMPLE

#include "bdd101.h"
   bddsystem  ∗BddSystem;
   bddcircuit ∗BddCircuit;
   bddnode    ∗BddNode;
   bddnode    ∗BddVariable;
   chain_list ∗Expr;
   bddvar         Variable;
   BddSystem  = createbddsystem( 100, 1000, 100, 50000 );
   BddCircuit = createbddcircuit( "hello_world", 10, 10, BddSystem );
   Expr = createablbinexpr( ABL_AND,
                            createablatom( "i0" ),
                            createablatom( "i1" ) );
   BddNode = addbddcircuitabl( BddCircuit, Expr );
   freeablexpr( Expr );
   BddVariable = searchbddcircuitin( (bddcircuit ∗)0, "i0" );
   Variable = getbddvarbyindex( (bddsystem ∗ 0), BddVariable->INDEX ) );
   /* displays 1 */
   printf( "%d", isbddvarinsupport( (bddsystem ∗)0, BddNode, Variable ) );
   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