MEMCCPY(3)                 POSIX Programmer's Manual                MEMCCPY(3)



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

NAME
       memccpy -- copy bytes in memory

SYNOPSIS
       #include <string.h>

       void *memccpy(void *restrict s1, const void *restrict s2,
           int _c, size_t _n);

DESCRIPTION
       The memccpy() function shall copy bytes from memory area s2 into s1,
       stopping after the first occurrence of byte _c (converted to an unsigned
       char) is copied, or after _n bytes are copied, whichever comes first. If
       copying takes place between objects that overlap, the behavior is
       undefined.

RETURN VALUE
       The memccpy() function shall return a pointer to the byte after the
       copy of _c in s1, or a null pointer if _c was not found in the first _n
       bytes of s2.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       The memccpy() function does not check for the overflow of the receiving
       memory area.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       The Base Definitions volume of POSIX.1-2017, <string.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  In the event of any discrepancy between this version and the
       original IEEE and The Open Group Standard, the original IEEE and The
       Open Group Standard is the referee document. The original Standard can
       be obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                           MEMCCPY(3)
