NAME

delbddnodeassoc - deletes a bdd node in a variable association.

See the file buster/alliance/alc_origin.1.en.gz.

SYNOPSYS

#include "bdd101.h"
int delbddnodeassoc( BddSystem, BddAssoc, Variable )


  bddsystem  ∗BddSystem;


  bddassoc   ∗BddAssoc;


  bddvar      Variable;

PARAMETERS

BddSystem: The bdd system.
BddAssoc: The variable association.
Variable: The variable number.

DESCRIPTION

delbddnodeassoc deletes the bdd node associated to the variable number Variable, in the variable association BddAssoc, in the bdd system BddSystem. If a null pointer is given, the default bdd system is used. The number of external reference of the associated bdd node is incremented.

RETURN VALUE

delbddnodeassoc returns 1 if the variable is found, 0 otherwise.

ERRORS

"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;


   bddcircuit ∗BddCircuit;


   bddnode    ∗BddNode;


   bddnode    ∗BddSubst;


   bddnode    ∗BddVariable;


   bddassoc   ∗Assoc;


   chain_list ∗Expr;


   bddvar         Variable;


   BddSystem  = createbddsystem( 100, 1000, 100, 50000 );


   BddCircuit = createbddcircuit( "hello_world", 10, 10, BddSystem );


   Expr = createablbinexpr( ABL_AND,


                            createablatom( "i0" ),


                            createablatom( "i1" ) );


   BddNode = addbddcircuitabl( BddCircuit, Expr );


   freeablexpr( Expr );


   Expr = createablbinexpr( ABL_OR,


                            createablatom( "i2" ),


                            createablatom( "i3" ) );


   BddSubst = addbddcircuitabl( BddCircuit, Expr );


   freeablexpr( Expr );


   BddVariable = searchbddcircuitin( (bddcircuit ∗)0, "i0" );


   Variable = getbddvarbyindex( (bddsystem ∗)0, BddVariable->INDEX );


   Assoc = addbddassoc( (bddsystem ∗)0 );


   addbddnodeassoc( (bddsystem ∗)0, Assoc, Variable, BddSubst );


   BddNode = substbddnodeassoc( (bddsystem ∗)0, BddSubst, Assoc );


   delbddnodeassoc( (bddsystem ∗)0, Assoc, Variable );


   Expr = convertbddcircuitabl( BddCircuit, BddNode );


   /* displays ((i3 or i2) and i1) */


   viewablexpr( Expr, ABL_VIEW_VHDL );


   freeablexpr( Expr );


   destroybddassoc( (bddsystem ∗)0 );


   destroybddsystem( (bddsystem ∗)0 );


   destroybddcircuit( (bddcircuit ∗)0 );