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

# incbddrefint(3)

increments the internal reference of a bdd node.

## NAME

incbddrefint - increments the internal reference of a **bdd** node.

## SYNOPSYS

```
#include "bdd101.h"
bddnode ∗incbddrefint( BddNode )
  bddnode ∗BddNode;
```

## PARAMETERS

- *BddNode*

  The **bdd** node.

## DESCRIPTION

**incbddrefint** increments the number of internal reference of the **bdd** node *BddNode*.\

## RETURN VALUE

**incbddrefint** returns the *BddNode* pointer.

## 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 );
   BddNode = addbddcircuitin( (bddcircuit ∗)0, "i0", 0, BDD_IN_MODE_FIRST );
   BddNode = addbddnode( (bddsystem ∗)0, BddNode->INDEX, BddNode->LOW, BddNode->HIGH );
   Expr = convertbddcircuitabl( (bddcircuit ∗)0, BddNode );
   incbddrefint( BddNode );
   /* displays Node VAR: 0  INDEX: 2  MARK: 0  REF_EXT: 1  REF_INT: 1 */
   viewbddnode( (bddsystem ∗)0, BddNode );
   /* displays (not i0) */
   viewablexpr( Expr, ABL_VIEW_VHDL );
   freeablexpr( Expr );
   destroybddsystem( (bddsystem ∗)0 );
   destroybddcircuit( (bddcircuit ∗)0 );
```

## SEE ALSO

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