Linux manual pages Section 3: Subroutines  

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);
 
[Note] Note
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
[Note] Note

Link with −lm.

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

Multithreading (see pthreads(7))

The fmax(), fmaxf(), and fmaxl() functions are thread-safe.

CONFORMING TO

C99, POSIX.1-2001.

SEE ALSO

fmin(3)

COLOPHON

This page is part of release 3.54 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man−pages/.


  Copyright 2002 Walter Harms (walter.harmsinformatik.uni-oldenburg.de)
and Copyright 2008, Linux Foundation, written by Michael Kerrisk
    <mtk.manpagesgmail.com>

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