---
name: "SDL_floorf"
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_floorf"
---

# SDL\_floorf(3)

Compute the floor of x .

## NAME

SDL\_floorf - Compute the floor of **x** .

## HEADER FILE

Defined in SDL3/SDL\_stdinc.h

## SYNOPSIS

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

**float SDL\_floorf(float x);**

## DESCRIPTION

The floor of **x** is the largest integer **y** such that **y**\>**x** , i.e **x** rounded down to the nearest integer.

Domain: **-INF**\<=**x**\<=**INF** Range: **-INF**\<=**y**\<=**INF** , y integer

This function operates on single-precision floating point values, use

**SDL\_floor**\
  for double-precision floats.

## FUNCTION PARAMETERS

- *x*

  floating point value.

## RETURN VALUE

Returns the floor of **x** .

## THREAD SAFETY

It is safe to call this function from any thread.

## AVAILABILITY

This function is available since SDL 3.2.0.

## SEE ALSO

**•**(3), [**SDL\_floor**(3)](/SDL_floor/3.md), **•**(3), [**SDL\_ceilf**(3)](/SDL_ceilf/3.md), **•**(3), [**SDL\_truncf**(3)](/SDL_truncf/3.md), **•**(3), [**SDL\_roundf**(3)](/SDL_roundf/3.md), **•**(3), [**SDL\_lroundf**(3)](/SDL_lroundf/3.md)