# FMAX

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

ERRORS

VERSIONS

ATTRIBUTES

CONFORMING TO

SEE ALSO

COLOPHON

## NAME

fmax, fmaxf,
fmaxl − determine maximum of two floating-point
numbers

## SYNOPSIS

**#include
<math.h>**

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

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

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

Link with
*−lm*.

Feature Test
Macro Requirements for glibc (see
**feature_test_macros**(7)):

**fmax**(),
**fmaxf**(), **fmaxl**():

_XOPEN_SOURCE >= 600
|| _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;

or *cc -std=c99*

## DESCRIPTION

These functions
return the larger value of *x* and *y*.

## RETURN VALUE

These functions
return the maximum of *x* and *y*.

If one argument
is a NaN, the other argument is returned.

If both
arguments are NaN, a NaN is returned.

## ERRORS

No errors
occur.

## VERSIONS

These functions
first appeared in glibc in version 2.1.

## ATTRIBUTES

For an
explanation of the terms used in this section, see
**attributes**(7).

## CONFORMING TO

C99,
POSIX.1-2001.

## SEE ALSO

**fmin**(3)

## COLOPHON

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part of release 3.53 of the Linux *man-pages* project.
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http://www.kernel.org/doc/man−pages/.