1WMEMMOVE(3P)               POSIX Programmer's Manual              WMEMMOVE(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       wmemmove — copy wide characters in memory with overlapping areas
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SYNOPSIS

15       #include <wchar.h>
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17       wchar_t *wmemmove(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  wmemmove()  function  shall copy n wide characters from the object
26       pointed to by ws2 to the object pointed to by ws1.  Copying shall  take
27       place as if the n wide characters from the object pointed to by ws2 are
28       first copied into a temporary array of n wide characters that does  not
29       overlap the objects pointed to by ws1 or ws2, and then the n wide char‐
30       acters from the temporary array are copied into the object  pointed  to
31       by ws1.
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33       This  function  shall  not be affected by locale and all wchar_t values
34       shall be treated identically. The null wide character and wchar_t  val‐
35       ues  not  corresponding  to  valid characters shall not be treated spe‐
36       cially.
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38       If n is zero, the application shall ensure that ws1 and ws2  are  valid
39       pointers, and the function shall copy zero wide characters.
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RETURN VALUE

42       The wmemmove() function shall return the value of ws1.
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ERRORS

45       No errors are defined
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47       The following sections are informative.
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EXAMPLES

50       None.
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APPLICATION USAGE

53       None.
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RATIONALE

56       None.
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FUTURE DIRECTIONS

59       None.
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SEE ALSO

62       wmemchr(), wmemcmp(), wmemcpy(), wmemset()
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64       The Base Definitions volume of POSIX.1‐2017, <wchar.h>
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67       Portions  of  this text are reprinted and reproduced in electronic form
68       from IEEE Std 1003.1-2017, Standard for Information Technology --  Por‐
69       table  Operating System Interface (POSIX), The Open Group Base Specifi‐
70       cations Issue 7, 2018 Edition, Copyright (C) 2018 by the  Institute  of
71       Electrical  and  Electronics Engineers, Inc and The Open Group.  In the
72       event of any discrepancy between this version and the original IEEE and
73       The  Open Group Standard, the original IEEE and The Open Group Standard
74       is the referee document. The original Standard can be  obtained  online
75       at http://www.opengroup.org/unix/online.html .
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77       Any  typographical  or  formatting  errors that appear in this page are
78       most likely to have been introduced during the conversion of the source
79       files  to  man page format. To report such errors, see https://www.ker‐
80       nel.org/doc/man-pages/reporting_bugs.html .
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84IEEE/The Open Group                  2017                         WMEMMOVE(3P)
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