man addbddvarfirst (3): adds a new variable, before all others.

SYNOPSYS

#include "bdd101.h"
bddnode *addbddvarfirst( BddSystem )
  bddsystem *BddSystem;

PARAMETERS

BddSystem: The bdd system.

DESCRIPTION

addbddvarfirst creates a new variable, with the number 0, in the bdd system BddSystem. If a null pointer is given, the default bdd system is used.

RETURN VALUE

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

ERRORS

"no more variables, error !"

: There is no variable number left.

EXAMPLE

#include "bdd101.h"
   bddsystem  *BddSystem;
   bddnode    *BddNode;
   BddSystem  = createbddsystem( 100, 1000, 100, 50000 );
   BddNode = addbddvarfirst( (bddsystem *)0 );
   destroybddsystem( (bddsystem *)0 );