freebsd-dev/lib/libc/string/strspn.3
Edward Tomasz Napierala 5174a6a262 Add wide character variants of string manipulations routines to 'SEE ALSO'.
Approved by:	rwatson (mentor)
2009-04-07 13:42:53 +00:00

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.\" @(#)strspn.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd June 4, 1993
.Dt STRSPN 3
.Os
.Sh NAME
.Nm strspn
.Nd span a string
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In string.h
.Ft size_t
.Fn strspn "const char *s" "const char *charset"
.Sh DESCRIPTION
The
.Fn strspn
function
spans the initial part of the null-terminated string
.Fa s
as long as the characters from
.Fa s
occur in the null-terminated string
.Fa charset .
In other words, it computes the string array index in
.Fa s
of the first character of
.Fa s
which is not in
.Fa charset ,
else the index of the first null character.
.Sh RETURN VALUES
The
.Fn strspn
function
returns the number of characters spanned.
.Sh SEE ALSO
.Xr memchr 3 ,
.Xr strchr 3 ,
.Xr strcspn 3 ,
.Xr strpbrk 3 ,
.Xr strrchr 3 ,
.Xr strsep 3 ,
.Xr strstr 3 ,
.Xr strtok 3 ,
.Xr wcsspn 3
.Sh STANDARDS
The
.Fn strspn
function
conforms to
.St -isoC .