int wmemcmp(const wchar_t *ws1, const wchar_t *ws2,
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.
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.
No errors are defined.
The following sections are informative.
wmemchr() , wmemcpy() , wmemmove() , wmemset()
, the Base Definitions volume of
IEEE Std 1003.1-2001, <wchar.h>
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