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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "ISGREATEREQUAL" 3P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" isgreaterequal 
+.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 \- test if x is greater than or equal to y
+.SH SYNOPSIS
+.LP
+\fB#include <math.h>
+.br
+.sp
+int isgreaterequal(real-floating\fP \fIx\fP\fB, real-floating\fP \fIy\fP\fB);
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIisgreaterequal\fP() macro shall determine whether its first
+argument is greater than or equal to its second argument.
+The value of \fIisgreaterequal\fP( \fIx\fP, \fIy\fP) shall be equal
+to (\fIx\fP)\ >=\ (\fIy\fP); however, unlike
+(\fIx\fP)\ >=\ (\fIy\fP), \fIisgreaterequal\fP( \fIx\fP, \fIy\fP)
+shall not raise the invalid floating-point
+exception when \fIx\fP and \fIy\fP are unordered.
+.SH RETURN VALUE
+.LP
+Upon successful completion, the \fIisgreaterequal\fP() macro shall
+return the value of
+(\fIx\fP)\ >=\ (\fIy\fP).
+.LP
+If \fIx\fP or \fIy\fP is NaN, 0 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
+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,
+\fBreal-floating\fP indicates that the argument shall be an expression
+of \fBreal-floating\fP type.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIisgreater\fP(), \fIisless\fP(), \fIislessequal\fP(), \fIislessgreater\fP(),
+\fIisunordered\fP(), the Base Definitions volume of 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 .