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1.\" $OpenBSD: wcsstr.3,v 1.3 2013/06/05 03:39:23 tedu Exp $
2.\"
3.\" Copyright (c) 1990, 1991 The Regents of the University of California.
4.\" All rights reserved.
5.\"
6.\" This code is derived from software contributed to Berkeley by
7.\" Chris Torek and the American National Standards Committee X3,
8.\" on Information Processing Systems.
9.\"
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11.\" modification, are permitted provided that the following conditions
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13.\" 1. Redistributions of source code must retain the above copyright
14.\" notice, this list of conditions and the following disclaimer.
15.\" 2. Redistributions in binary form must reproduce the above copyright
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17.\" documentation and/or other materials provided with the distribution.
18.\" 3. Neither the name of the University nor the names of its contributors
19.\" may be used to endorse or promote products derived from this software
20.\" without specific prior written permission.
21.\"
22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32.\" SUCH DAMAGE.
33.\"
34.Dd $Mdocdate: June 5 2013 $
35.Dt WCSSTR 3
36.Os
37.Sh NAME
38.Nm wcsstr
39.Nd locate a wide substring in a wide string
40.Sh SYNOPSIS
41.In wchar.h
42.Ft wchar_t *
43.Fn wcsstr "const wchar_t *big" "const wchar_t *little"
44.Sh DESCRIPTION
45The
46.Fn wcsstr
47function locates the first occurrence of the wide string
48.Fa little
49in the wide string
50.Fa big .
51.Pp
52If
53.Fa little
54is an empty wide string,
55.Fa big
56is returned;
57if
58.Fa little
59occurs nowhere in
60.Fa big ,
61.Dv NULL
62is returned;
63otherwise a pointer to the first wide character of the first occurrence of
64.Fa little
65is returned.
66.Sh SEE ALSO
67.Xr strstr 3 ,
68.Xr wcschr 3 ,
69.Xr wcscspn 3 ,
70.Xr wcspbrk 3 ,
71.Xr wcsrchr 3 ,
72.Xr wcsspn 3 ,
73.Xr wcstok 3 ,
74.Xr wmemchr 3
75.Sh STANDARDS
76The
77.Fn wcsstr
78function conforms to
79.St -isoC-99
80and was first introduced in
81.St -isoC-amd1 .
82.Sh HISTORY
83The
84.Fn wcsstr
85function was ported from
86.Nx
87and first appeared in
88.Ox 3.8 .