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

# createbddsystem(3)

creates a bdd system.

## NAME

createbddsystem - creates a **bdd** system.

## SYNOPSYS

```
#include "bdd101.h"
bddsystem ∗createbddsystem( ModelVar, ModelOper, MaxVar, MaxNode  )
  long   ModelVar;
  long   ModelOper;
  long   MaxVar;
  long   MaxNode;
```

## PARAMETERS

- *ModelVar*

  Initial size of the hash table uses for a variable.

- *ModelOper*

  Size of the hash table uses as a cache.

- *MaxVar*

  Initial maximum number of variables.

- *MaxNode*

  Maximum nodes allowed.

## DESCRIPTION

**createbddsystem** creates and initializes a **bdd** system. \

## RETURN VALUE

**createbddsystem** returns a pointer to the **bdd** system created.

## ERRORS

**"system model variable xxx error !"**

The *ModelVar* parameter must be a positive value.

**"system model oper xxx error !"**

The *ModelOper* parameter must be a positive value.

**"variable xxx out of range error !"**

The *MaxVar* parameter must be less than *BDD\_MAX\_VAR*.

## EXAMPLE

```
#include "bdd101.h"
   bddsystem ∗BddSystem;
   BddSystem = createbddsystem( 100, 1000, 100, 50000 );
   ...
   destroybddsystem( BddSystem );
```

## SEE ALSO

[**bdd**(1)](/bdd/1.md) **resetbddsytem(3),** **destroybddsytem(3).**