---
name: "SDL_lround"
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_lround"
---

# SDL\_lround(3)

Round x to the nearest integer representable as a long

## NAME

SDL\_lround - Round **x** to the nearest integer representable as a long

## HEADER FILE

Defined in SDL3/SDL\_stdinc.h

## SYNOPSIS

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

**long SDL\_lround(double x);**

## DESCRIPTION

Rounds **x** to the nearest integer. Values halfway between integers will be rounded away from zero.

Domain: **-INF**\<=**x**\<=**INF** Range: **MIN\_LONG**\<=**y**\<=**MAX\_LONG** This function operates on double-precision floating point values, use

**SDL\_lroundf**\
  for single-precision floats. To get the result as a floating-point type, use  **SDL\_round** .

## FUNCTION PARAMETERS

- *x*

  floating point value.

## RETURN VALUE

Returns the nearest integer to **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\_lroundf**(3)](/SDL_lroundf/3.md), **•**(3), [**SDL\_round**(3)](/SDL_round/3.md), **•**(3), [**SDL\_floor**(3)](/SDL_floor/3.md), **•**(3), [**SDL\_ceil**(3)](/SDL_ceil/3.md), **•**(3), [**SDL\_trunc**(3)](/SDL_trunc/3.md)