---
name: "implybddnode"
section: "3"
platform: "linux"
package: "alliance"
version: "5.1.1-3"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/implybddnode"
---

# implybddnode(3)

computes a bdd that implies a conjonction of two bdd nodes.

## NAME

implybddnode - computes a **bdd** that implies a conjonction of two **bdd** nodes.

## SYNOPSYS

```
#include "bdd101.h"
bddnode ∗implybddnode( 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

**implybddnode** tests if the intersection of *BddNode1* and not *BddNode2*, exists, in the **bdd** system *BddSystem*. If a null pointer is given, the default **bdd** system is used.\

## RETURN VALUE

**implybddnode** returns the **bdd** node zero if there is no  intersection, and a computed **bdd** node otherwise.

## EXAMPLE

```
#include "bdd101.h"
   bddsystem  ∗BddSystem;
   bddcircuit ∗BddCircuit;
   bddnode    ∗BddNode1;
   bddnode    ∗BddNode2;
   bddnode    ∗BddImply;
   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" ) );
   BddNode1 = addbddcircuitabl( BddCircuit, Expr );
   freeablexpr( Expr );
   BddImply = implybddnode( (bddsystem ∗)0, BddNode1, BddNode2 );
   Expr = convertbddcircuitabl( BddCircuit, BddNode );
   /* displays (i0 and (not i1)) */
   viewablexpr( Expr, ABL_VIEW_VHDL );
   freeablexpr( Expr );
   destroybddsystem( (bddsystem ∗)0 );
   destroybddcircuit( (bddcircuit ∗)0 );
```

## SEE ALSO

[**bdd**(1)](/bdd/1.md)