wmemcmp(3p) — Linux manual page

WMEMCMP(3P)             POSIX Programmer's Manual            WMEMCMP(3P)

PROLOG         top

       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         top

       wmemcmp — compare wide characters in memory

SYNOPSIS         top

       #include <wchar.h>

       int wmemcmp(const wchar_t *ws1, const wchar_t *ws2, size_t n);

DESCRIPTION         top

       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         top

       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         top

       No errors are defined.

       The following sections are informative.

EXAMPLES         top

       None.

APPLICATION USAGE         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       wmemchr(3p), wmemcpy(3p), wmemmove(3p), wmemset(3p)

       The Base Definitions volume of POSIX.1‐2017, wchar.h(0p)

COPYRIGHT         top

       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 .

IEEE/The Open Group               2017                       WMEMCMP(3P)

Pages that refer to this page: wchar.h(0p),  wmemchr(3p),  wmemcpy(3p),  wmemmove(3p),  wmemset(3p)

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