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.
NAMEwmemcmp - compare wide characters in memory
SYNOPSIS
#include <wchar.h>
int wmemcmp(const wchar_t *ws1, const wchar_t *ws2, size_t n);
DESCRIPTION
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 ALSOwmemchr(), wmemcpy(), wmemmove(), wmemset(), the Base Definitions vol‐
ume of IEEE Std 1003.1-2001, <wchar.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 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 .
IEEE/The Open Group 2003 WMEMCMP(3P)
