table of contents
RESTRICTBDDNODE(3) | BDD FUNCTIONS | RESTRICTBDDNODE(3) |
NAME¶
restrictbddnode - substitutes a variable by a zero or one, in a bdd.
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 ∗restrictbddnode( BddSystem, BddNode, Variable, BddSubst )
bddsystem ∗BddSystem;
bddnode ∗BddNode;
bddvar Variable;
bddnode ∗BddSubst;
PARAMETERS¶
DESCRIPTION¶
restrictbddnode substitutes all the occurency of the variable Variable in the bdd node BddNode by the bdd node BddSubst, in the bdd system BddSystem. If a null pointer is given, the default bdd system is used. The BddSubst must be a the node BddSystem->ONE or BddSystem->ZERO.
RETURN VALUE¶
restrictbddnode returns the resulting bdd node.
ERRORS¶
"variable xxx out of range, error !"
EXAMPLE¶
#include "bdd101.h"
bddsystem ∗BddSystem;
bddcircuit ∗BddCircuit;
bddnode ∗BddVariable;
bddnode ∗BddNode;
bddnode ∗BddSubst;
chain_list ∗Expr;
bddvar Variable;
BddSystem = createbddsystem( 100, 1000, 100, 50000 );
BddCircuit = createbddcircuit( "hello_world", 10, 10, BddSystem );
Expr = createablbinexpr( ABL_OR,
createablatom( "i0" ),
createablatom( "i1" ) );
BddNode = addbddcircuitabl( BddCircuit, Expr );
freeablexpr( Expr );
BddSubst = BddSystem->ONE;
BddVariable = searchbddcircuitin( (bddcircuit ∗)0, "i0" );
Variable = getbddvarbyindex( (bddsystem ∗)0, BddVariable->INDEX );
BddNode = restrictbddnode( (bddsystem ∗)0, BddNode, Variable, BddSubst );
Expr = convertbddcircuitabl( BddCircuit, BddNode );
/* displays '1' */
viewablexpr( Expr, ABL_VIEW_VHDL );
freeablexpr( Expr );
destroybddsystem( (bddsystem ∗)0 );
destroybddcircuit( (bddcircuit ∗)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.
October 1, 1997 | ASIM/LIP6 |