minix/lib/nbsd_libc/string/strcspn.3
Gianluca Guida b6cbf7203b Import unmodified NetBSD libc in trunk
This patch imports the unmodified current version of NetBSD libc.
The NetBSD includes are in /nbsd_include, while the libc code itself is 
split between lib/nbsd_libc and common/lib/libc.
2011-02-14 19:36:03 +00:00

97 lines
2.8 KiB
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.\" Copyright (c) 1990, 1991, 1993
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.\" This code is derived from software contributed to Berkeley by
.\" Chris Torek and the American National Standards Committee X3,
.\" on Information Processing Systems.
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.\" from: @(#)strcspn.3 8.1 (Berkeley) 6/4/93
.\" $NetBSD: strcspn.3,v 1.10 2006/10/16 08:48:45 wiz Exp $
.\"
.Dd August 11, 2002
.Dt STRCSPN 3
.Os
.Sh NAME
.Nm strcspn
.Nd span the complement of a string
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In string.h
.Ft size_t
.Fn strcspn "const char *s" "const char *charset"
.Sh DESCRIPTION
The
.Fn strcspn
function
spans the initial part of the nul-terminated string
.Fa s
as long as the characters from
.Fa s
do not occur in string
.Fa charset
(it
spans the
.Em complement
of
.Fa charset ) .
.Sh RETURN VALUES
The
.Fn strcspn
function
returns the number of characters spanned.
.Sh EXAMPLES
The following call to
.Fn strcspn
will return 3, since the first three characters of string
.Fa s
do not occur in string
.Fa charset :
.Bd -literal -offset indent
char *s = "foobar";
char *charset = "bar";
size_t span;
span = strcspn(s, charset);
.Ed
.Sh SEE ALSO
.Xr index 3 ,
.Xr memchr 3 ,
.Xr rindex 3 ,
.Xr strchr 3 ,
.Xr strpbrk 3 ,
.Xr strrchr 3 ,
.Xr strsep 3 ,
.Xr strspn 3 ,
.Xr strstr 3 ,
.Xr strtok 3
.Sh STANDARDS
The
.Fn strcspn
function
conforms to
.St -ansiC .