1WCSFTIME(3P)               POSIX Programmer's Manual              WCSFTIME(3P)
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PROLOG

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

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

15       #include <wchar.h>
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17       size_t wcsftime(wchar_t *restrict wcs, size_t maxsize,
18           const wchar_t *restrict format, const struct tm *restrict timeptr);
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DESCRIPTION

21       The functionality described on this reference page is aligned with  the
22       ISO C  standard.  Any  conflict between the requirements described here
23       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2017
24       defers to the ISO C standard.
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26       The wcsftime() function shall be equivalent to the strftime() function,
27       except that:
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29        *  The argument wcs points to the initial element of an array of  wide
30           characters into which the generated output is to be placed.
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32        *  The  argument  maxsize indicates the maximum number of wide charac‐
33           ters to be placed in the output array.
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35        *  The argument format is a wide-character string and  the  conversion
36           specifications  are  replaced  by  corresponding  sequences of wide
37           characters.  It is unspecified whether an encoding error occurs  if
38           the format string contains wchar_t values that do not correspond to
39           members of the character set of the current locale.
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41        *  Field widths specify the number of wide characters instead  of  the
42           number of bytes.
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44        *  The  return value indicates the number of wide characters placed in
45           the output array.
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47       If copying takes place between objects that overlap,  the  behavior  is
48       undefined.
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RETURN VALUE

51       If  the  total  number  of resulting wide-character codes including the
52       terminating null wide-character code is no  more  than  maxsize,  wcsf‐
53       time()  shall return the number of wide-character codes placed into the
54       array pointed to by wcs, not including the terminating null  wide-char‐
55       acter  code.  Otherwise, zero is returned and the contents of the array
56       are unspecified.
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ERRORS

59       No errors are defined.
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61       The following sections are informative.
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EXAMPLES

64       None.
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APPLICATION USAGE

67       None.
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RATIONALE

70       None.
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FUTURE DIRECTIONS

73       None.
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SEE ALSO

76       strftime()
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78       The Base Definitions volume of POSIX.1‐2017, <wchar.h>
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81       Portions of this text are reprinted and reproduced in  electronic  form
82       from  IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
83       table Operating System Interface (POSIX), The Open Group Base  Specifi‐
84       cations  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of
85       Electrical and Electronics Engineers, Inc and The Open Group.   In  the
86       event of any discrepancy between this version and the original IEEE and
87       The Open Group Standard, the original IEEE and The Open Group  Standard
88       is  the  referee document. The original Standard can be obtained online
89       at http://www.opengroup.org/unix/online.html .
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91       Any typographical or formatting errors that appear  in  this  page  are
92       most likely to have been introduced during the conversion of the source
93       files to man page format. To report such errors,  see  https://www.ker‐
94       nel.org/doc/man-pages/reporting_bugs.html .
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98IEEE/The Open Group                  2017                         WCSFTIME(3P)
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