1WMEMCHR(3P)                POSIX Programmer's Manual               WMEMCHR(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

13       wmemchr — find a wide character in memory
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SYNOPSIS

16       #include <wchar.h>
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18       wchar_t *wmemchr(const wchar_t *ws, wchar_t wc, size_t n);
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DESCRIPTION

21       The functionality described on this reference page is aligned with  the
22       ISO C  standard.  Any  conflict between the requirements described here
23       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2008
24       defers to the ISO C standard.
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26       The  wmemchr()  function shall locate the first occurrence of wc in the
27       initial n wide characters of the object pointed to by ws.   This  func‐
28       tion  shall  not  be affected by locale and all wchar_t values shall be
29       treated identically. The null wide character  and  wchar_t  values  not
30       corresponding to valid characters shall not be treated specially.
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32       If  n  is zero, the application shall ensure that ws is a valid pointer
33       and the function behaves as if no valid occurrence of wc is found.
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RETURN VALUE

36       The wmemchr() function shall return a pointer to the located wide char‐
37       acter,  or  a  null pointer if the wide character does not occur in the
38       object.
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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       wmemcmp(), wmemcpy(), wmemmove(), wmemset()
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60       The Base Definitions volume of POSIX.1‐2008, <wchar.h>
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63       Portions of this text are reprinted and reproduced in  electronic  form
64       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
65       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
66       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
67       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
68       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
69       event of any discrepancy between this version and the original IEEE and
70       The  Open Group Standard, the original IEEE and The Open Group Standard
71       is the referee document. The original Standard can be  obtained  online
72       at http://www.unix.org/online.html .
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74       Any  typographical  or  formatting  errors that appear in this page are
75       most likely to have been introduced during the conversion of the source
76       files  to  man page format. To report such errors, see https://www.ker‐
77       nel.org/doc/man-pages/reporting_bugs.html .
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81IEEE/The Open Group                  2013                          WMEMCHR(3P)
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