mirror of https://github.com/mkerrisk/man-pages
79 lines
1.9 KiB
Groff
79 lines
1.9 KiB
Groff
.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
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.\"
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.\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA)
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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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.\" %%%LICENSE_END
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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 2015-08-08 "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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.PP
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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
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.I wcs
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which consists entirely of wide-characters not listed in
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.IR reject .
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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
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.I wcs
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of any of the characters in the wide-character string
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.IR reject .
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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
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.I wcs
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which consists entirely of wide-characters not
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listed in
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.IR reject .
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In other words, it returns the position of the first
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occurrence in the wide-character string
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.I wcs
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of any of the characters in
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the wide-character string
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.IR reject ,
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or
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.IR wcslen(wcs)
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if there is none.
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.SH ATTRIBUTES
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For an explanation of the terms used in this section, see
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.BR attributes (7).
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.TS
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allbox;
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lb lb lb
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l l l.
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Interface Attribute Value
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T{
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.BR wcscspn ()
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T} Thread safety MT-Safe
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.TE
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.SH CONFORMING TO
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POSIX.1-2001, POSIX.1-2008, 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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