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

12       wmemchr — find a wide character in memory
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SYNOPSIS

15       #include <wchar.h>
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17       wchar_t *wmemchr(const wchar_t *ws, wchar_t wc, 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  wmemchr()  function shall locate the first occurrence of wc in the
26       initial n wide characters of the object pointed to by ws.   This  func‐
27       tion  shall  not  be affected by locale and all wchar_t values shall be
28       treated identically. The null wide character  and  wchar_t  values  not
29       corresponding to valid characters shall not be treated specially.
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31       If  n  is zero, the application shall ensure that ws is a valid pointer
32       and the function behaves as if no valid occurrence of wc is found.
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RETURN VALUE

35       The wmemchr() function shall return a pointer to the located wide char‐
36       acter,  or  a  null pointer if the wide character does not occur in the
37       object.
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ERRORS

40       No errors are defined.
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42       The following sections are informative.
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EXAMPLES

45       None.
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APPLICATION USAGE

48       None.
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RATIONALE

51       None.
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FUTURE DIRECTIONS

54       None.
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SEE ALSO

57       wmemcmp(), wmemcpy(), wmemmove(), wmemset()
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59       The Base Definitions volume of POSIX.1‐2017, <wchar.h>
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62       Portions of this text are reprinted and reproduced in  electronic  form
63       from  IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
64       table Operating System Interface (POSIX), The Open Group Base  Specifi‐
65       cations  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of
66       Electrical and Electronics Engineers, Inc and The Open Group.   In  the
67       event of any discrepancy between this version and the original IEEE and
68       The Open Group Standard, the original IEEE and The Open Group  Standard
69       is  the  referee document. The original Standard can be obtained online
70       at http://www.opengroup.org/unix/online.html .
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72       Any typographical or formatting errors that appear  in  this  page  are
73       most likely to have been introduced during the conversion of the source
74       files to man page format. To report such errors,  see  https://www.ker
75       nel.org/doc/man-pages/reporting_bugs.html .
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79IEEE/The Open Group                  2017                          WMEMCHR(3P)
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