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wcsdup(3p) [posix man page]

WCSDUP(3P)						     POSIX Programmer's Manual							WCSDUP(3P)

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       wcsdup -- duplicate a wide-character string

SYNOPSIS

       #include <wchar.h>

       wchar_t *wcsdup(const wchar_t *string);

DESCRIPTION

       The wcsdup() function is the wide-character equivalent of the strdup() function.

       The wcsdup() function shall return a pointer to a new wide-character string, allocated as if by a call to malloc(), which is the  duplicate
       of  the	wide-character string string.  The returned pointer can be passed to free().  A null pointer is returned if the new wide-character
       string cannot be created.

RETURN VALUE

       Upon successful completion, the wcsdup() function shall return a pointer to the newly allocated wide-character string. Otherwise, it  shall
       return a null pointer and set errno to indicate the error.

ERRORS

       The wcsdup() function shall fail if:

       ENOMEM Memory large enough for the duplicate string could not be allocated.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       For functions that allocate memory as if by malloc(), the application should release such memory when it is no longer required by a call to
       free().	For wcsdup(), this is the return value.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       free(), strdup(), wcscpy()

       The Base Definitions volume of POSIX.1-2008, <wchar.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol-
       ogy  --	Portable  Operating  System  Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Stan-
       dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE
/The Open Group						       2013								WCSDUP(3P)

Check Out this Related Man Page

WCSWIDTH(3P)						     POSIX Programmer's Manual						      WCSWIDTH(3P)

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       wcswidth -- number of column positions of a wide-character string

SYNOPSIS

       #include <wchar.h>

       int wcswidth(const wchar_t *pwcs, size_t n);

DESCRIPTION

       The wcswidth() function shall determine the number of column positions required for n wide-character codes (or fewer than n  wide-character
       codes if a null wide-character code is encountered before n wide-character codes are exhausted) in the string pointed to by pwcs.

RETURN VALUE

       The  wcswidth()	function either shall return 0 (if pwcs points to a null wide-character code), or return the number of column positions to
       be occupied by the wide-character string pointed to by pwcs, or return -1 (if any of the first n wide-character codes in the wide-character
       string pointed to by pwcs is not a printable wide-character code).

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       This function was removed from the final ISO/IEC 9899:1990/Amendment 1:1995 (E), and the return value for a non-printable wide character is
       not specified.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       wcwidth()

       The Base Definitions volume of POSIX.1-2008, Section 3.103, Column Position, <wchar.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol-
       ogy  --	Portable  Operating  System  Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Stan-
       dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE
/The Open Group						       2013							      WCSWIDTH(3P)
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