---
name: "AuFormatToDefine"
section: "3x"
platform: "linux"
package: "nas"
version: "1.2p5-3"
release: "Debian 2.0 (Hamm)"
platforms: ["linux"]
url: "https://new.carta.tech/AuFormatToDefine/3x"
---

# AuFormatToDefine(3x)

return the C-preprocess define for a format.

## Name

**AuFormatToDefine** - return the C-preprocess define for a format.

## Synopsis

\#include \<audio/audiolib.h\>

char \***AuFormatToDefine**(*format*)\
\
     unsigned int *format*;

## Arguments

- *format*

  Specifies an audio data format.

## Description

**AuFormatToDefine** returns the C-preprocessor define for *format* or "unknown" if *format* isn't valid.

## See Also

**AuFormatToString**.

audiolib - **Network Audio System** C Language Interface