WCSNCMP(3)                 POSIX Programmer's Manual                WCSNCMP(3)



PROLOG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

NAME
       wcsncmp -- compare part of two wide-character strings

SYNOPSIS
       #include <wchar.h>

       int wcsncmp(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 wcsncmp() function shall compare not more than _n wide-character
       codes (wide-character codes that follow a null wide-character code are
       not compared) from the array pointed to by ws1 to the array pointed to
       by ws2.

       The sign of a non-zero return value shall be determined by the sign of
       the difference between the values of the first pair of wide-character
       codes that differ in the objects being compared.

RETURN VALUE
       Upon successful completion, wcsncmp() shall return an integer greater
       than, equal to, or less than 0, if the possibly null-terminated array
       pointed to by ws1 is greater than, equal to, or less than the possibly
       null-terminated array pointed to by ws2, respectively.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       wcscasecmp(), wcscmp()

       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 .



IEEE/The Open Group                  2017                           WCSNCMP(3)
