---
name: "llrintf"
section: "3"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/llrint"
---

# llrintf(3)

convert to integer

Part of [llrint(3)](/llrint/3.md).

## NAME

**llrint**, **llrintf**, **llrintl**, **lrint**, **lrintf**, **lrintl** – convert to integer

## LIBRARY

Math Library (libm, -lm)

## SYNOPSIS

**#include \<math.h\>**

*long long*\

**llrint**(*double x*);

*long long*\

**llrintf**(*float x*);

*long long*\

**llrintl**(*long double x*);

*long*\

**lrint**(*double x*);

*long*\

**lrintf**(*float x*);

*long*\

**lrintl**(*long double x*);

## DESCRIPTION

The **lrint**() function returns the integer nearest to its argument *x* according to the current rounding mode. If the rounded result is too large to be represented as a *long* value, an invalid exception is raised and the return value is undefined. Otherwise, if *x* is not an integer, **lrint**() raises an inexact exception. When the rounded result is representable as a *long*, the expression **lrint**(*x*) is equivalent to (*long*)**rint**(*x*) (although the former may be more efficient).

The **llrint**(), **llrintf**(), **llrintl**(), **lrintf**(), and **lrintl**() functions differ from **lrint**() only in their input and output types.

## SEE ALSO

[lround(3)](/lround/3.md), [math(3)](/math/3.md), [rint(3)](/rint/3.md), [round(3)](/round/3.md)

## STANDARDS

These functions conform to ISO/IEC 9899:1999 (“ISO C99”).

## HISTORY

The **llrint**(), **llrintf**(), **lrint**(), and **lrintf**() routines first appeared in FreeBSD 5.4. The long double variants were introduced in FreeBSD 8.0.