ADDBDDVAR(3)							   BDD FUNCTIONS						      ADDBDDVAR(3)

NAME

       addbddvar - adds a new variable in the bdd system.

ORIGIN

       This  software  belongs	to  the  ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite 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 *addbddvar( BddSystem, Variable )
	 bddsystem *BddSystem;
	 bddvar     Variable;

PARAMETERS

       BddSystem	   The bdd system.

       Variable 	   The variable number.

DESCRIPTION

       addbddvar creates a new variable, with the number Variable, in the bdd system BddSystem.  If a null pointer is given, the default bdd  sys-
       tem is used.

RETURN VALUE

       addbddvar returns a pointer to the bdd node of the new variable.

ERRORS

       "no more variables, error !"
	      There is no variable number left.
       "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;
	  bddnode    *BddNode;
	  BddSystem  = createbddsystem( 100, 1000, 100, 50000 );
	  BddNode = addbddvar( (bddsystem *)0, 0 );
	  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						      ADDBDDVAR(3)