1WCSNCMP(3P)                POSIX Programmer's Manual               WCSNCMP(3P)
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PROLOG

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

12       wcsncmp — compare part of two wide-character strings
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SYNOPSIS

15       #include <wchar.h>
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17       int wcsncmp(const wchar_t *ws1, const wchar_t *ws2, size_t n);
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DESCRIPTION

20       The functionality described on this reference page is aligned with  the
21       ISO C  standard.  Any  conflict between the requirements described here
22       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2017
23       defers to the ISO C standard.
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25       The  wcsncmp()  function  shall  compare not more than n wide-character
26       codes (wide-character codes that follow a null wide-character code  are
27       not  compared) from the array pointed to by ws1 to the array pointed to
28       by ws2.
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30       The sign of a non-zero return value shall be determined by the sign  of
31       the  difference  between the values of the first pair of wide-character
32       codes that differ in the objects being compared.
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RETURN VALUE

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

41       No errors are defined.
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43       The following sections are informative.
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EXAMPLES

46       None.
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APPLICATION USAGE

49       None.
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RATIONALE

52       None.
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FUTURE DIRECTIONS

55       None.
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SEE ALSO

58       wcscasecmp(), wcscmp()
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60       The Base Definitions volume of POSIX.1‐2017, <wchar.h>
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63       Portions  of  this text are reprinted and reproduced in electronic form
64       from IEEE Std 1003.1-2017, Standard for Information Technology --  Por‐
65       table  Operating System Interface (POSIX), The Open Group Base Specifi‐
66       cations Issue 7, 2018 Edition, Copyright (C) 2018 by the  Institute  of
67       Electrical  and  Electronics Engineers, Inc and The Open Group.  In the
68       event of any discrepancy between this version and the original IEEE and
69       The  Open Group Standard, the original IEEE and The Open Group Standard
70       is the referee document. The original Standard can be  obtained  online
71       at http://www.opengroup.org/unix/online.html .
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73       Any  typographical  or  formatting  errors that appear in this page are
74       most likely to have been introduced during the conversion of the source
75       files  to  man page format. To report such errors, see https://www.ker‐
76       nel.org/doc/man-pages/reporting_bugs.html .
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80IEEE/The Open Group                  2017                          WCSNCMP(3P)
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