.\"   $Id: delbddnodeassoc.3,v 1.1 2002/03/18 11:26:50 ludo Exp $
.\" @(#)delbddnodeassoc.2 2.7 96/07/02 ; Labo masi cao-vlsi; Author : Jacomme Ludovic
.TH DELBDDNODEASSOC 3 "October 1, 1997" "ASIM/LIP6" "BDD FUNCTIONS"
.SH NAME
delbddnodeassoc \- deletes a \fBbdd\fP node in a variable association.
.so jessie/alliance/alc_origin.1.en.gz
.SH SYNOPSYS
.nf
.if n \{\
.ft B \}
.if t \{\
.ft CR \}
#include "bdd101.h"
int delbddnodeassoc( BddSystem, BddAssoc, Variable )
  bddsystem  \(**BddSystem;
  bddassoc   \(**BddAssoc;
  bddvar      Variable;
.ft R
.fi
.SH PARAMETERS
.TP 20
\fIBddSystem\fP
The \fBbdd\fP system.
.TP
\fIBddAssoc\fP
The variable association.
.TP
\fIVariable\fP
The variable number.
.SH DESCRIPTION
\fBdelbddnodeassoc\fP deletes the \fBbdd\fP node associated to the
variable number \fIVariable\fP, in the variable association \fIBddAssoc\fP,
in the \fBbdd\fP system \fIBddSystem\fP.
If a null pointer is given, the default \fBbdd\fP system is used.
The number of external reference of the associated \fBbdd\fP node is incremented.
.br
.SH RETURN VALUE
\fBdelbddnodeassoc\fP returns 1 if the variable is found, 0 otherwise.
.SH ERRORS
.if n \{\
.ft B \}
.if t \{\
.ft CR \}
"variable xxx out of range, error !"
.ft R
.RS
The \fIVariable\fP parameter must be less or equal to
the \fIBddSystem->NUMBER_VAR\fP field.
.RE
.SH EXAMPLE
.ta 3n 6n 9n 12n 15n 18n 21n
.nf
.if n \{\
.ft B \}
.if t \{\
.ft CR \}
#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 );
.ft R
.fi
.SH SEE ALSO
.BR bdd (1)


.so jessie/alliance/alc_bug_report.1.en.gz