fmax - Man Page

determine maximum of two floating-point numbers

Library

Math library (libm, -lm)

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);

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

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

    _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L

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.

Attributes

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

InterfaceAttributeValue
fmax(), fmaxf(), fmaxl()Thread safetyMT-Safe

Standards

C11, POSIX.1-2008.

History

glibc 2.1. C99, POSIX.1-2001.

See Also

fdim(3), fmin(3)

Referenced By

fdim(3), fmin(3), MAX(3).

The man pages fmaxf(3) and fmaxl(3) are aliases of fmax(3).

2023-10-31 Linux man-pages 6.06