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.\" Copyright (c) 1990 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Chris Torek.
.\"
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.\" provided that: (1) source distributions retain this entire copyright
.\" notice and comment, and (2) distributions including binaries display
.\" the following acknowledgement:  ``This product includes software
.\" developed by the University of California, Berkeley and its contributors''
.\" in the documentation or other materials provided with the distribution
.\" and in all advertising materials mentioning features or use of this
.\" software. Neither the name of the University nor the names of its
.\" contributors may be used to endorse or promote products derived
.\" from this software without specific prior written permission.
.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
.\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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.\"	@(#)strspn.3	5.1 (Berkeley) 5/15/90
.\"
.TH STRSPN 3 "May 15, 1990"
.UC 7
.SH NAME
strspn \- span a string
.SH SYNOPSIS
.nf
.ft B
#include <string.h>

size_t
strspn(const char *s, const char *charset);
.ft R
.fi
.SH DESCRIPTION
.B Strcspn
spans the initial part of the null-terminated string
.I s
as long as the characters from
.I s
occur in string
.IR charset .
.B Strspn
returns the number of characters spanned.
.SH SEE ALSO
index(3), memchr(3), rindex(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3),
strsep(3), strstr(3), strtok(3)
.SH STANDARDS
.B Strspn
conforms to ANSI X3.159-1989 (``ANSI C'').

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