PROLOG

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

NAME

       wcsftime — convert date and time to a wide-character string

SYNOPSIS

       #include <wchar.h>

       size_t wcsftime(wchar_t *restrict wcs, size_t maxsize,
           const wchar_t *restrict format, const struct tm *restrict timeptr);

DESCRIPTION

       The functionality described on this reference page is aligned with the ISO C standard. Any
       conflict between the requirements described here and the ISO C standard is  unintentional.
       This volume of POSIX.1‐2017 defers to the ISO C standard.

       The wcsftime() function shall be equivalent to the strftime() function, except that:

        *  The  argument  wcs  points  to the initial element of an array of wide characters into
           which the generated output is to be placed.

        *  The argument maxsize indicates the maximum number of wide characters to be  placed  in
           the output array.

        *  The  argument  format is a wide-character string and the conversion specifications are
           replaced by corresponding sequences of wide characters.  It is unspecified whether  an
           encoding  error  occurs  if  the  format  string  contains  wchar_t values that do not
           correspond to members of the character set of the current locale.

        *  Field widths specify the number of wide characters instead of the number of bytes.

        *  The return value indicates the number of wide characters placed in the output array.

       If copying takes place between objects that overlap, the behavior is undefined.

RETURN VALUE

       If the total number of resulting wide-character codes including the terminating null wide-
       character  code  is  no  more  than  maxsize,  wcsftime() shall return the number of wide-
       character codes placed into the array pointed to by wcs,  not  including  the  terminating
       null  wide-character  code.  Otherwise, zero is returned and the contents of the array are
       unspecified.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       strftime()

       The Base Definitions volume of POSIX.1‐2017, <wchar.h>

COPYRIGHT

       Portions of this text are reprinted and  reproduced  in  electronic  form  from  IEEE  Std
       1003.1-2017,  Standard  for  Information Technology -- Portable Operating System Interface
       (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C)  2018  by
       the  Institute  of  Electrical  and Electronics Engineers, Inc and The Open Group.  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 Standard is the referee document. The
       original Standard can be obtained online at http://www.opengroup.org/unix/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 .