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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "ISFINITE" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" isfinite 
+.SH NAME
+isfinite \- test for finite value
+.SH SYNOPSIS
+.LP
+\fB#include <math.h>
+.br
+.sp
+int isfinite(real-floating\fP \fIx\fP\fB);
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIisfinite\fP() macro shall determine whether its argument has
+a finite value (zero, subnormal, or normal, and not
+infinite or NaN). First, an argument represented in a format wider
+than its semantic type is converted to its semantic type. Then
+determination is based on the type of the argument.
+.SH RETURN VALUE
+.LP
+The \fIisfinite\fP() macro shall return a non-zero value if and only
+if its argument has a finite value.
+.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
+\fIfpclassify\fP() , \fIisinf\fP() , \fIisnan\fP() , \fIisnormal\fP()
+, \fIsignbit\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 .