The Open Group Base Specifications Issue 7, 2018 edition
IEEE Std 1003.1-2017 (Revision of IEEE Std 1003.1-2008)
Copyright © 2001-2018 IEEE and The Open Group

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

[CX] [Option Start] 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. [Option End]

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

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

XBD <wchar.h>

CHANGE HISTORY

First released in Issue 4.

Issue 5

Moved from ENHANCED I18N to BASE and the [ENOSYS] error is removed.

Aligned with ISO/IEC 9899:1990/Amendment 1:1995 (E). Specifically, the type of the format argument is changed from const char * to const wchar_t *.

Issue 6

The wcsftime() prototype is updated for alignment with the ISO/IEC 9899:1999 standard.

Issue 7

POSIX.1-2008, Technical Corrigendum 2, XSH/TC2-2008/0388 [73] and XSH/TC2-2008/0389 [740] are applied.

End of informative text.

 

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