mirror of https://github.com/mkerrisk/man-pages
59 lines
1.8 KiB
Groff
59 lines
1.8 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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.\"
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.TH WCSNCASECMP 3 2007-07-26 "GNU" "Linux Programmer's Manual"
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.SH NAME
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wcsncasecmp \- compare two fixed-size wide-character strings, ignoring case
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.SH SYNOPSIS
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.nf
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.B #define _GNU_SOURCE
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.B #include <wchar.h>
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.sp
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.BI "int wcsncasecmp(const wchar_t *" s1 ", const wchar_t *" s2 ", size_t " n );
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.fi
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.SH DESCRIPTION
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The
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.BR wcsncasecmp ()
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function is the wide-character equivalent of the
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.BR strncasecmp (3)
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function.
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It compares the wide-character string pointed to
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by \fIs1\fP and the wide-character string
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pointed to by \fIs2\fP, but at most
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\fIn\fP wide characters from each string, ignoring case differences
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.RB ( towupper (3),
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.BR towlower (3)).
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.SH "RETURN VALUE"
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The
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.BR wcsncasecmp ()
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function returns zero
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if the wide-character strings at
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\fIs1\fP and \fIs2\fP,
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truncated to at most length \fIn\fP, are equal except
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for case distinctions.
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It returns a positive integer if truncated \fIs1\fP is
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greater than truncated \fIs2\fP, ignoring case.
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It returns a negative integer
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if truncated \fIs1\fP is smaller than truncated \fIs2\fP, ignoring case.
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.SH "CONFORMING TO"
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This function is a GNU extension.
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.SH NOTES
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The behavior of
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.BR wcsncasecmp ()
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depends on the
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.B LC_CTYPE
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category of the
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current locale.
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.SH "SEE ALSO"
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.BR strncasecmp (3),
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.BR wcsncmp (3)
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