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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "WCSCSPN" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" wcscspn
+.SH NAME
+wcscspn \- get the length of a complementary wide substring
+.SH SYNOPSIS
+.LP
+\fB#include <wchar.h>
+.br
+.sp
+size_t wcscspn(const wchar_t *\fP\fIws1\fP\fB, const wchar_t *\fP\fIws2\fP\fB);
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIwcscspn\fP() function shall compute the length (in wide characters)
+of the maximum initial segment of the wide-character
+string pointed to by \fIws1\fP which consists entirely of wide-character
+codes \fInot\fP from the wide-character string pointed
+to by \fIws2\fP.
+.SH RETURN VALUE
+.LP
+The \fIwcscspn\fP() function shall return the length of the initial
+substring of \fIws1\fP; no return value is reserved to
+indicate an error.
+.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
+\fIwcsspn\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
+\fI<wchar.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 .