huschi.net

WMEMCMP(3P)                POSIX Programmer's Manual               WMEMCMP(3P)
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
       wmemcmp -- compare wide characters in memory
SYNOPSIS
       #include <wchar.h>
       int wmemcmp(const wchar_t *ws1, const wchar_t *ws2, size_t n);
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.1-2008
       defers to the ISO C standard.
       The wmemcmp() function shall compare the first n wide characters of the
       object pointed to by ws1 to the first n wide characters of  the  object
       pointed  to  by ws2.  This function shall not be affected by locale and
       all wchar_t values shall be treated identically. The null wide  charac-
       ter  and wchar_t values not corresponding to valid characters shall not
       be treated specially.
       If n is zero, the application shall ensure that ws1 and ws2  are  valid
       pointers,  and  the function shall behave as if the two objects compare
       equal.
RETURN VALUE
       The wmemcmp() function shall return an integer greater than, equal  to,
       or  less  than  zero,  respectively, as the object pointed to by ws1 is
       greater than, equal to, or less than the object pointed to by ws2.
ERRORS
       No errors are defined.
       The following sections are informative.
EXAMPLES
       None.
APPLICATION USAGE
       None.
RATIONALE
       None.
FUTURE DIRECTIONS
       None.
SEE ALSO
       wmemchr(), wmemcpy(), wmemmove(), wmemset()
       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 Technology
       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri-
       cal 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 Standard
       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.ker-
       nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group                  2013                          WMEMCMP(3P)