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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "ISWDIGIT" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" iswdigit
+.SH NAME
+iswdigit \- test for a decimal digit wide-character code
+.SH SYNOPSIS
+.LP
+\fB#include <wctype.h>
+.br
+.sp
+int iswdigit(wint_t\fP \fIwc\fP\fB);
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIiswdigit\fP() function shall test whether \fIwc\fP is a wide-character
+code representing a character of class
+\fBdigit\fP in the program's current locale; see the Base Definitions
+volume of IEEE\ Std\ 1003.1-2001, Chapter 7, Locale.
+.LP
+The \fIwc\fP argument is a \fBwint_t\fP, the value of which the application
+shall ensure is a wide-character code
+corresponding to a valid character in the current locale, or equal
+to the value of the macro WEOF. If the argument has any other
+value, the behavior is undefined.
+.SH RETURN VALUE
+.LP
+The \fIiswdigit\fP() function shall return non-zero if \fIwc\fP is
+a decimal digit wide-character code; otherwise, it shall
+return 0.
+.SH ERRORS
+.LP
+No errors are defined.
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+To ensure applications portability, especially across natural languages,
+only this function and those listed in the SEE ALSO
+section should be used for classification of wide-character codes.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIiswalnum\fP() , \fIiswalpha\fP() , \fIiswcntrl\fP() , \fIiswctype\fP()
+, \fIiswgraph\fP() , \fIiswlower\fP() , \fIiswprint\fP() , \fIiswpunct\fP()
+, \fIiswspace\fP() , \fIiswupper\fP() , \fIiswxdigit\fP() , \fIsetlocale\fP()
+, the Base Definitions volume of
+IEEE\ Std\ 1003.1-2001, Chapter 7, Locale, \fI<wchar.h>\fP, \fI<wctype.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 .