---
name: "SDL_AUDIO_ISUNSIGNED"
section: "3"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_AUDIO_ISUNSIGNED"
---

# SDL\_AUDIO\_ISUNSIGNED(3)

Determine if an SDL\_AudioFormat represents unsigned data.

## NAME

SDL\_AUDIO\_ISUNSIGNED - Determine if an  **SDL\_AudioFormat**\
  represents unsigned data.

## HEADER FILE

Defined in SDL3/SDL\_audio.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**#define SDL\_AUDIO\_ISUNSIGNED(x)      (!SDL\_AUDIO\_ISSIGNED(x))**

## DESCRIPTION

For example, **SDL\_AUDIO\_ISUNSIGNED(SDL\_AUDIO\_S16)** returns 0.

## RETURN VALUE

Returns non-zero if format is unsigned, zero otherwise.

## THREAD SAFETY

It is safe to call this macro from any thread.

## AVAILABILITY

This macro is available since SDL 3.2.0.