mirror of https://github.com/mkerrisk/man-pages
46 lines
1.8 KiB
Groff
46 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 WCPNCPY 3 2003-11-01 "GNU" "Linux Programmer's Manual"
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.SH NAME
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wcpncpy \- copy a fixed-size string of wide characters, returning a pointer to its end
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.SH SYNOPSIS
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.nf
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.B #define _GNU_SOURCE
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.br
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.B #include <wchar.h>
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.sp
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.BI "wchar_t *wcpncpy(wchar_t *" dest ", const wchar_t *" src ", size_t " n );
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.fi
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.SH DESCRIPTION
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The \fBwcpncpy\fP() function is the wide-character equivalent of the \fBstpncpy\fP()
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function. It copies at most \fIn\fP wide characters from the wide-character
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string pointed to by \fIsrc\fP, including the terminating L'\\0' character,
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to the array pointed to by \fIdest\fP. Exactly \fIn\fP wide characters are
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written at \fIdest\fP. If the length \fIwcslen(src)\fP is smaller than \fIn\fP,
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the remaining wide characters in the array pointed to by \fIdest\fP are filled
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with L'\\0' characters. If the length \fIwcslen(src)\fP is greater or equal
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to \fIn\fP, the string pointed to by \fIdest\fP will not be L'\\0' terminated.
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.PP
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The strings may not overlap.
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.PP
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The programmer must ensure that there is room for at least \fIn\fP wide
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characters at \fIdest\fP.
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.SH "RETURN VALUE"
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\fBwcpncpy\fP() returns a pointer to the last wide character written, i.e.
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\fIdest + n \- 1\fP.
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.SH "CONFORMING TO"
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This function is a GNU extension.
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.SH "SEE ALSO"
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.BR stpncpy (3),
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.BR wcsncpy (3)
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