FMAX(3) Linux Programmer s Manual FMAX(3)

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; 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.


SEE ALSO fmin(3)

COLOPHON This page is part of release 3.22 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at

2008-08-11 FMAX(3)