1MEMMOVE(3P)                POSIX Programmer's Manual               MEMMOVE(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       memmove — copy bytes in memory with overlapping areas
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SYNOPSIS

16       #include <string.h>
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18       void *memmove(void *s1, const void *s2, 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 memmove() function shall copy n bytes from the object pointed to by
27       s2 into the object pointed to by s1.  Copying takes place as if  the  n
28       bytes  from  the object pointed to by s2 are first copied into a tempo‐
29       rary array of n bytes that does not overlap the objects pointed  to  by
30       s1  and  s2,  and  then the n bytes from the temporary array are copied
31       into the object pointed to by s1.
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RETURN VALUE

34       The memmove() function shall return s1; no return value is reserved  to
35       indicate an error.
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ERRORS

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

43       None.
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APPLICATION USAGE

46       None.
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RATIONALE

49       None.
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FUTURE DIRECTIONS

52       None.
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SEE ALSO

55       The Base Definitions volume of POSIX.1‐2008, <string.h>
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58       Portions  of  this text are reprinted and reproduced in electronic form
59       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
60       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
61       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
62       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
63       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
64       event of any discrepancy between this version and the original IEEE and
65       The Open Group Standard, the original IEEE and The Open Group  Standard
66       is  the  referee document. The original Standard can be obtained online
67       at http://www.unix.org/online.html .
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69       Any typographical or formatting errors that appear  in  this  page  are
70       most likely to have been introduced during the conversion of the source
71       files to man page format. To report such errors,  see  https://www.ker‐
72       nel.org/doc/man-pages/reporting_bugs.html .
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76IEEE/The Open Group                  2013                          MEMMOVE(3P)
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