NAME

fmax, fmaxf, fmaxl - determine maximum numeric value 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);


DESCRIPTION

^[CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C standard.

These functions shall determine the maximum numeric value of their arguments. ^[MX]  NaN arguments shall be treated as missing data: if one argument is a NaN and the other numeric, then these functions shall choose the numeric value.

RETURN VALUE

Upon successful completion, these functions shall return the maximum numeric value of their arguments.

^[MX] If just one argument is a NaN, the other argument shall be returned.

If x and y are NaN, a NaN shall be returned.

ERRORS

No errors are defined.

EXAMPLES

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

fdim, fmin

XBD <math.h>

CHANGE HISTORY

First released in Issue 6. Derived from the ISO/IEC 9899:1999 standard.

Issue 7

Austin Group Interpretation 1003.1-2001 #007 is applied.