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1.\" $OpenBSD: wcscspn.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.
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22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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33.\"
34.Dd $Mdocdate: June 5 2013 $
35.Dt WCSCSPN 3
36.Os
37.Sh NAME
38.Nm wcscspn
39.Nd span the complement of a wide string
40.Sh SYNOPSIS
41.In wchar.h
42.Ft size_t
43.Fn wcscspn "const wchar_t *s" "const wchar_t *charset"
44.Sh DESCRIPTION
45The
46.Fn wcscspn
47function spans the initial part of the wide string
48.Fa s
49as long as the wide characters from
50.Fa s
51do not occur in string
52.Fa charset
53(it spans the
54.Em complement
55of
56.Fa charset ) .
57.Sh RETURN VALUES
58The
59.Fn wcscspn
60function returns the number of wide characters spanned.
61.Sh SEE ALSO
62.Xr strcspn 3 ,
63.Xr wcschr 3 ,
64.Xr wcspbrk 3 ,
65.Xr wcsrchr 3 ,
66.Xr wcsspn 3 ,
67.Xr wcsstr 3 ,
68.Xr wcstok 3 ,
69.Xr wmemchr 3
70.Sh STANDARDS
71The
72.Fn wcscspn
73function conforms to
74.St -isoC-99
75and was first introduced in
76.St -isoC-amd1 .
77.Sh HISTORY
78The
79.Fn wcscspn
80function was ported from
81.Nx
82and first appeared in
83.Ox 3.8 .