delbddnode

DELBDDNODE(3)                    BDD FUNCTIONS                   DELBDDNODE(3)



NAME
       delbddnode - deletes an unused bdd node.


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"
       void delbddnode( BddSystem, BddNode )
         bddsystem ∗BddSystem;
         bddnode   ∗BddNode;

PARAMETERS
       BddSystem           The bdd system.

       BddNode             The bdd node.

DESCRIPTION
       delbddnode tries to delete the bdd node BddNode and its children, if
       they have not external reference, in the bdd system BddSystem.  If a
       null pointer is given, the default bdd system is used. The use of this
       function is not recommended because, it takes time.  It is better to
       call the decbddrefext function, and do a garbage collection with the
       garbagebddsystem function.

RETURN VALUE
       delbddnode returns nothing.

EXAMPLE
       #include "bdd101.h"
          bddsystem  ∗BddSystem;
          bddcircuit ∗BddCircuit;
          bddnode    ∗BddNode;
          chain_list ∗Expr;
          BddSystem  = createbddsystem( 100, 1000, 100, 50000 );
          BddCircuit = createbddcircuit( "hello_world", 10, 10, BddSystem );
          BddNode = addbddcircuitin( (bddcircuit ∗)0, "i0", 0, BDD_IN_MODE_FIRST );
          BddNode = addbddnode( (bddsystem ∗)0, BddNode->INDEX, BddNode->LOW, BddNode->HIGH );
          Expr = convertbddcircuitabl( (bddcircuit ∗)0, BddNode );
          delbddnode( (bddsystem ∗)0, decbddrefext( BddNode ) );
          /* displays (not i0) */
          viewablexpr( Expr, ABL_VIEW_VHDL );
          freeablexpr( Expr );
          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.






ASIM/LIP6                       October 1, 1997                  DELBDDNODE(3)