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.1‐2017 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 character 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.1‐2017, <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 .