decbddrefext

DECBDDREFEXT(3)                  BDD FUNCTIONS                 DECBDDREFEXT(3)



NAME
       decbddrefext - decrements the external reference of a 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"
       bddnode ∗decbddrefext( BddNode )
         bddnode ∗BddNode;

PARAMETERS
       BddNode             The bdd node.

DESCRIPTION
       decbddrefext decrements the number of external reference of the bdd
       node BddNode.

RETURN VALUE
       decbddrefext returns the BddNode pointer.

ERRORS
       "negative reference, index xxx error !"
              The BddNode must have a postive number of external reference.

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 );
          decbddrefext( BddNode );
          /* displays Node VAR: 0  INDEX: 2  MARK: 0  REF_EXT: 0  REF_INT: 0 */
          viewbddnode( (bddsystem ∗)0, 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                DECBDDREFEXT(3)