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():
_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.
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).
| Interface | Attribute | Value |
|---|---|---|
| fmax(), fmaxf(), fmaxl() | Thread safety | MT-Safe |
Conforming to
C99, POSIX.1-2001, POSIX.1-2008.
See Also
Colophon
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Referenced By
The man pages fmaxf(3) and fmaxl(3) are aliases of fmax(3).