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.TH ISGREATEREQUAL "3P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual"

.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.

.SH NAME

isgreaterequal

\(em test if x is greater than or equal to y

.SH SYNOPSIS

.LP

.nf

#include <math.h>

.P

int isgreaterequal(real-floating \fIx\fP, real-floating \fIy\fP);

.fi

.SH DESCRIPTION

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\(hy2008 defers to the ISO\ C standard.

.P

The

\fIisgreaterequal\fR()

macro shall determine whether its first argument is greater than or

equal to its second argument. The value of

.IR isgreaterequal (\c

.IR x ,

.IR y )

shall be equal to (\fIx\fR)\ \(>=\ (\fIy\fR); however, unlike

(\fIx\fR)\ \(>=\ (\fIy\fR),

.IR isgreaterequal (\c

.IR x ,

.IR y )

shall not raise the invalid floating-point exception when

.IR x

and

.IR y

are unordered.

.SH "RETURN VALUE"

Upon successful completion, the

\fIisgreaterequal\fR()

macro shall return the value of (\fIx\fR)\ \(>=\ (\fIy\fR).

.P

If

.IR x

or

.IR y

is NaN, 0 shall be returned.

.SH ERRORS

No errors are defined.

.LP

.IR "The following sections are informative."

.SH EXAMPLES

None.

.SH "APPLICATION USAGE"

The relational and equality operators support the usual mathematical

relationships between numeric values. For any ordered pair of numeric

values, exactly one of the relationships (less, greater, and equal) is

true. Relational operators may raise the invalid floating-point

exception when argument values are NaNs. For a NaN and a numeric value,

or for two NaNs, just the unordered relationship is true. This macro

is a quiet (non-floating-point exception raising) version of a

relational operator. It facilitates writing efficient code that

accounts for NaNs without suffering the invalid floating-point

exception. In the SYNOPSIS section,

.BR real-floating

indicates that the argument shall be an expression of

.BR real-floating

type.

.SH RATIONALE

None.

.SH "FUTURE DIRECTIONS"

None.

.SH "SEE ALSO"

.IR "\fIisgreater\fR\^(\|)",

.IR "\fIisless\fR\^(\|)",

.IR "\fIislessequal\fR\^(\|)",

.IR "\fIislessgreater\fR\^(\|)",

.IR "\fIisunordered\fR\^(\|)"

.P

The Base Definitions volume of POSIX.1\(hy2008,

.IR "\fB<math.h>\fP"

.SH COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form

from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology

-- Portable Operating System Interface (POSIX), The Open Group Base

Specifications Issue 7, Copyright (C) 2013 by the Institute of

Electrical and Electronics Engineers, Inc and The Open Group.

(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .

Any typographical or formatting errors that appear

in this page are most likely

to have been introduced during the conversion of the source files to

man page format. To report such errors, see

https://www.kernel.org/doc/man-pages/reporting_bugs.html .