2004-11-03 13:51:07 +00:00
|
|
|
.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
|
2007-06-20 22:33:04 +00:00
|
|
|
.TH "FMAX" 3P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
|
2004-11-03 13:51:07 +00:00
|
|
|
.\" fmax
|
2007-09-20 06:03:25 +00:00
|
|
|
.SH PROLOG
|
|
|
|
This manual page is part of the POSIX Programmer's Manual.
|
|
|
|
The Linux implementation of this interface may differ (consult
|
|
|
|
the corresponding Linux manual page for details of Linux behavior),
|
|
|
|
or the interface may not be implemented on Linux.
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH NAME
|
|
|
|
fmax, fmaxf, fmaxl \- determine maximum numeric value of two floating-point
|
|
|
|
numbers
|
|
|
|
.SH SYNOPSIS
|
|
|
|
.LP
|
|
|
|
\fB#include <math.h>
|
|
|
|
.br
|
|
|
|
.sp
|
|
|
|
double fmax(double\fP \fIx\fP\fB, double\fP \fIy\fP\fB);
|
|
|
|
.br
|
|
|
|
float fmaxf(float\fP \fIx\fP\fB, float\fP \fIy\fP\fB);
|
|
|
|
.br
|
|
|
|
long double fmaxl(long double\fP \fIx\fP\fB, long double\fP \fIy\fP\fB);
|
|
|
|
.br
|
|
|
|
\fP
|
|
|
|
.SH DESCRIPTION
|
|
|
|
.LP
|
|
|
|
These functions shall determine the maximum numeric value of their
|
|
|
|
arguments. 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.
|
|
|
|
.SH RETURN VALUE
|
|
|
|
.LP
|
|
|
|
Upon successful completion, these functions shall return the maximum
|
|
|
|
numeric value of their arguments.
|
|
|
|
.LP
|
|
|
|
If just one argument is a NaN, the other argument shall be returned.
|
|
|
|
.LP
|
|
|
|
If
|
|
|
|
\fIx\fP and \fIy\fP are NaN, a NaN shall be returned.
|
|
|
|
.SH ERRORS
|
|
|
|
.LP
|
|
|
|
No errors are defined.
|
|
|
|
.LP
|
|
|
|
\fIThe following sections are informative.\fP
|
|
|
|
.SH EXAMPLES
|
|
|
|
.LP
|
|
|
|
None.
|
|
|
|
.SH APPLICATION USAGE
|
|
|
|
.LP
|
|
|
|
None.
|
|
|
|
.SH RATIONALE
|
|
|
|
.LP
|
|
|
|
None.
|
|
|
|
.SH FUTURE DIRECTIONS
|
|
|
|
.LP
|
|
|
|
None.
|
|
|
|
.SH SEE ALSO
|
|
|
|
.LP
|
2007-09-20 06:11:55 +00:00
|
|
|
\fIfdim\fP(), \fIfmin\fP(), the Base Definitions volume of
|
2004-11-03 13:51:07 +00:00
|
|
|
IEEE\ Std\ 1003.1-2001, \fI<math.h>\fP
|
|
|
|
.SH COPYRIGHT
|
|
|
|
Portions of this text are reprinted and reproduced in electronic form
|
|
|
|
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
|
|
|
|
-- Portable Operating System Interface (POSIX), The Open Group Base
|
|
|
|
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
|
|
|
|
Electrical and Electronics Engineers, Inc and The Open Group. In the
|
|
|
|
event of any discrepancy between this version and the original IEEE and
|
|
|
|
The Open Group Standard, the original IEEE and The Open Group Standard
|
|
|
|
is the referee document. The original Standard can be obtained online at
|
|
|
|
http://www.opengroup.org/unix/online.html .
|