addbddvarbefore

ADDBDDVARBEFORE(3)               BDD FUNCTIONS              ADDBDDVARBEFORE(3)



NAME
       addbddvarbefore - adds a new variable, before an existing one.


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 ∗addbddvarbefore( BddSystem )
         bddsystem ∗BddSystem;
         bddindex      Index;

PARAMETERS
       BddSystem           The bdd system.

       Index               The bdd index of an existing variable.

DESCRIPTION
       addbddvarbefore creates a new variable, with the number
       BddSystem->INDEX_TO_VAR[ Index ] in the bdd system BddSystem.  If a
       null pointer is given, the default bdd system is used.

RETURN VALUE
       addbddvarbefore returns a pointer to the bdd node of the new variable.

ERRORS
       "no more variables, error !"
              There is no variable number left.
       "index xxx out of range, error !"
              The Index parameter must be a valid index.

EXAMPLE
       #include "bdd101.h"
          bddsystem  ∗BddSystem;
          bddnode    ∗BddNode1;
          bddnode    ∗BddNode2;
          BddSystem  = createbddsystem( 100, 1000, 100, 50000 );
          BddNode1 = addbddvarfirst( (bddsystem ∗)0 );
          BddNode2 = addbddvarbefore( (bddsystem ∗)0, BddNode1->INDEX );
          destroybddsystem( (bddsystem ∗)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             ADDBDDVARBEFORE(3)