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WMEMCMP(3P) POSIX Programmer's Manual WMEMCMP(3P)
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.
wmemcmp — compare wide characters in memory
#include <wchar.h>
int wmemcmp(const wchar_t *ws1, const wchar_t *ws2, size_t n);
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 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.
None.
None.
None.
None.
wmemchr(3p), wmemcpy(3p), wmemmove(3p), wmemset(3p)
The Base Definitions volume of POSIX.1‐2008, wchar.h(0p)
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 Electrical 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.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 WMEMCMP(3P)
Pages that refer to this page: wchar.h(0p), wmemchr(3p), wmemcpy(3p), wmemmove(3p), wmemset(3p)