Adding upstream version 6.05.01.upstream/6.05.01

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+'\" t
+.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
+.\"
+.\" SPDX-License-Identifier: GPL-2.0-or-later
+.\"
+.\" References consulted:
+.\"   GNU glibc-2 source code and manual
+.\"   Dinkumware C library reference http://www.dinkumware.com/
+.\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
+.\"   ISO/IEC 9899:1999
+.\"
+.TH wmemchr 3 2023-07-20 "Linux man-pages 6.05.01"
+.SH NAME
+wmemchr \- search a wide character in a wide-character array
+.SH LIBRARY
+Standard C library
+.RI ( libc ", " \-lc )
+.SH SYNOPSIS
+.nf
+.B #include <wchar.h>
+.PP
+.BI "wchar_t *wmemchr(const wchar_t " s [. n "], wchar_t " c ", size_t " n );
+.fi
+.SH DESCRIPTION
+The
+.BR wmemchr ()
+function is the wide-character equivalent of the
+.BR memchr (3)
+function.
+It searches the
+.I n
+wide characters starting at
+.I s
+for
+the first occurrence of the wide character
+.IR c .
+.SH RETURN VALUE
+The
+.BR wmemchr ()
+function returns a pointer to the first occurrence of
+.I c
+among the
+.I n
+wide characters starting at
+.IR s ,
+or NULL if
+.I c
+does
+not occur among these.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lbx lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.na
+.nh
+.BR wmemchr ()
+T}	Thread safety	MT-Safe
+.TE
+.sp 1
+.SH STANDARDS
+C11, POSIX.1-2008.
+.SH HISTORY
+POSIX.1-2001, C99.
+.SH SEE ALSO
+.BR memchr (3),
+.BR wcschr (3)