Add nsswitch support.
[dragonfly.git] / lib / libc / string / strcspn.3
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984263bc
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1.\" Copyright (c) 1990, 1991, 1993
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4.\" This code is derived from software contributed to Berkeley by
5.\" Chris Torek and the American National Standards Committee X3,
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36.\" @(#)strcspn.3 8.1 (Berkeley) 6/4/93
37.\" $FreeBSD: src/lib/libc/string/strcspn.3,v 1.3.2.4 2001/12/14 18:33:59 ru Exp $
1de703da 38.\" $DragonFly: src/lib/libc/string/strcspn.3,v 1.2 2003/06/17 04:26:46 dillon Exp $
984263bc
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39.\"
40.Dd June 4, 1993
41.Dt STRCSPN 3
42.Os
43.Sh NAME
44.Nm strcspn
45.Nd span the complement of a string
46.Sh LIBRARY
47.Lb libc
48.Sh SYNOPSIS
49.In string.h
50.Ft size_t
51.Fn strcspn "const char *s" "const char *charset"
52.Sh DESCRIPTION
53The
54.Fn strcspn
55function
56spans the initial part of the null-terminated string
57.Fa s
58as long as the characters from
59.Fa s
60do not occur in string
61.Fa charset
62(it
63spans the
64.Em complement
65of
66.Fa charset ) .
67.Sh RETURN VALUES
68The
69.Fn strcspn
70function
71returns the number of characters spanned.
72.Sh SEE ALSO
73.Xr memchr 3 ,
74.Xr strchr 3 ,
75.Xr strpbrk 3 ,
76.Xr strrchr 3 ,
77.Xr strsep 3 ,
78.Xr strspn 3 ,
79.Xr strstr 3 ,
80.Xr strtok 3
81.Sh STANDARDS
82The
83.Fn strcspn
84function
85conforms to
86.St -isoC .