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

# getbddnodenum(3)

gets the number of nodes in a bdd.

## NAME

getbddnodenum - gets the number of nodes in a **bdd**.

## SYNOPSYS

```
#include "bdd101.h"
long getbddnodenum( BddSystem, BddNode )
  bddsystem ∗BddSystem;
  bddnode   ∗BddNode;
```

## PARAMETERS

- *BddSystem*

  The **bdd** system.

- *BddNode*

  The **bdd** node.

## DESCRIPTION

**getbddnodenum** computes the number of different nodes in *BddNode*, in the **bdd** system *BddSystem*. If a null pointer is given, the default **bdd** system is used.\

## RETURN VALUE

**getbddnodenum** returns the number of the different nodes reached.

## EXAMPLE

```
#include "bdd101.h"
   bddsystem  ∗BddSystem;
   bddcircuit ∗BddCircuit;
   bddnode    ∗BddNode;
   chain_list ∗Expr;
   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 );
   printf( "Number nodes: %ld0,
           getbddnodenum( (bddsystem ∗)0, BddNode ) );
   destroybddsystem( (bddsystem ∗)0 );
   destroybddcircuit( (bddcircuit ∗)0 );
```

## SEE ALSO

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