mirror of https://github.com/mkerrisk/man-pages
54 lines
1.7 KiB
Groff
54 lines
1.7 KiB
Groff
.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
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.\"
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.\" This is free documentation; you can redistribute it and/or
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.\" modify it under the terms of the GNU General Public License as
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.\" published by the Free Software Foundation; either version 2 of
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.\" the License, or (at your option) any later version.
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.\"
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.\" References consulted:
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.\" GNU glibc-2 source code and manual
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.\" Dinkumware C library reference http://www.dinkumware.com/
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.\" OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html
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.\" ISO/IEC 9899:1999
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.\"
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.TH WCSCSPN 3 1999-07-25 "GNU" "Linux Programmer's Manual"
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.SH NAME
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wcscspn \- search a wide-character string for any of a set of wide characters
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.SH SYNOPSIS
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.nf
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.B #include <wchar.h>
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.sp
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.BI "size_t wcscspn(const wchar_t *" wcs ", const wchar_t *" reject );
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.fi
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.SH DESCRIPTION
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The
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.BR wcscspn ()
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function is the wide-character equivalent
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of the
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.BR strcspn (3)
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function.
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It determines the length of the longest initial segment of \fIwcs\fP
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which consists entirely of wide-characters not listed in \fIreject\fP.
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In
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other words, it searches for the first occurrence in the wide-character
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string \fIwcs\fP of any of the characters in the wide-character string
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\fIreject\fP.
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.SH "RETURN VALUE"
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The
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.BR wcscspn ()
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function returns the number of
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wide characters in the longest
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initial segment of \fIwcs\fP which consists entirely of wide-characters not
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listed in \fIreject\fP.
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In other words, it returns the position of the first
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occurrence in the wide-character string \fIwcs\fP
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of any of the characters in
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the wide-character string \fIreject\fP,
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or \fIwcslen(wcs)\fP if there is none.
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.SH "CONFORMING TO"
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C99.
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.SH "SEE ALSO"
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.BR strcspn (3),
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.BR wcspbrk (3),
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.BR wcsspn (3)
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