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

# fmaximum(3)

floating-point maximum and minimum functions

## NAME

**fmaximum**, **fmaximumf**, **fmaximuml**, **fminimum**, **fminimumf**, **fminimuml** – floating-point maximum and minimum functions

## LIBRARY

Math Library (libm, -lm)

## SYNOPSIS

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

*double*\

**fmaximum**(*double x*, *double y*);

*float*\

**fmaximumf**(*float x*, *float y*);

*long double*\

**fmaximuml**(*long double x*, *long double y*);

*double*\

**fminimum**(*double x*, *double y*);

*float*\

**fminimumf**(*float x*, *float y*);

*long double*\

**fminimuml**(*long double x*, *long double y*);

## DESCRIPTION

The **fmaximum**(), **fmaximumf**(), and **fmaximuml**() functions return the larger of *x* and *y*, and likewise, the **fminimum**(), **fminimumf**(), and **fminimuml**() functions return the smaller of *x* and *y*. They treat +0.0 as being larger than -0.0.

Unlike the [fmax(3)](/fmax/3.md) family of functions, which ignore an , if either argument to **fmaximum**() or **fminimum**() is an , then the result is an . These routines do not raise any floating-point exceptions.

## SEE ALSO

[fmax(3)](/fmax/3.md), [fmaximum\_mag(3)](/fmaximum_mag/3.md), [fmaximum\_num(3)](/fmaximum_num/3.md), [math(3)](/math/3.md)

## STANDARDS

The **fmaximum**(), **fmaximumf**(), **fmaximuml**(), **fminimum**(), **fminimumf**(), and **fminimuml**() functions conform to ISO/IEC 9899:2024 (“ISO C23”).

## HISTORY

These routines first appeared in FreeBSD 16.0.