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Name

cofactorbddnode - computes the generalized cofactor.

Origin

This software belongs to the ALLIANCE CAD system from the CAO-VLSI team at ASIM/LIP6/UPMC laboratory.
LIP6/ASIM
University P. et M. Curie 4, place Jussieu 75252 PARIS Cedex 05 FRANCE
Fax : {33/0} 1.44.27.62.86
E-mail support : alliance-support@asim.lip6.fr

Synopsys

#include bdd101.h"
bddnode *cofactorbddnode( BddSystem, BddNode1, BddNode2 ) bddsystem *BddSystem;
bddnode *BddNode1;
bddnode *BddNode2;

Parameters

BddSystem
The bdd system.
BddNode1
The first bdd node.
BddNode2
The second bdd node.

Description

cofactorbddnode computes the generalized cofactor of BddNode1 by BddNode2, in the bdd system BddSystem. If a null pointer is given, the default bdd system is used.

Return Value

cofactorbddnode returns the resulting bdd node.

Errors

index xxx out of range"
The BddNode2 parameter must be different to the zero bdd node.

Example

#include bdd101.h"
bddsystem *BddSystem;
bddcircuit *BddCircuit;

bddnode
*BddNode1;
bddnode
*BddNode2;
bddnode
*BddNode; chain_list *Expr; BddSystem = createbddsystem( 100, 1000, 100, 50000 ); BddCircuit = createbddcircuit( hello_world", 10, 10, BddSystem );

Expr = createablbinexpr( ABL_OR,
createablatom( i0 ), createablatom( i1 ) ); BddNode1 = addbddcircuitabl( BddCircuit, Expr ); freeablexpr( Expr );
Expr = createablbinexpr( ABL_AND,
createablatom( i0 ), createablatom( i1 ) ); BddNode2 = addbddcircuitabl( BddCircuit, Expr ); freeablexpr( Expr );
BddNode = cofactorbddnode( (bddsystem *)0, BddNode1, BddNode2 ); 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/LIP6/UPMC laboratory, cao-vlsi research team.
We need your feedbak to improve documentation and tools. If you find bugs, please fill-in the form at http://asim.lip6.fr/alliance/support/bug-report/ Thanks for doing this.


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