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



PPRROOLLOOGG
       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.

NNAAMMEE
       memccpy -- copy bytes in memory

SSYYNNOOPPSSIISS
       #include <string.h>

       void *memccpy(void *restrict _s_1, const void *restrict _s_2,
           int _c, size_t _n);

DDEESSCCRRIIPPTTIIOONN
       The _m_e_m_c_c_p_y() function shall copy bytes from memory area _s_2 into _s_1,
       stopping after the first occurrence of byte _c (converted to an uunnssiiggnneedd
       cchhaarr) is copied, or after _n bytes are copied, whichever comes first. If
       copying takes place between objects that overlap, the behavior is
       undefined.

RREETTUURRNN VVAALLUUEE
       The _m_e_m_c_c_p_y() function shall return a pointer to the byte after the
       copy of _c in _s_1, or a null pointer if _c was not found in the first _n
       bytes of _s_2.

EERRRROORRSS
       No errors are defined.

       _T_h_e _f_o_l_l_o_w_i_n_g _s_e_c_t_i_o_n_s _a_r_e _i_n_f_o_r_m_a_t_i_v_e_.

EEXXAAMMPPLLEESS
       None.

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       The _m_e_m_c_c_p_y() function does not check for the overflow of the receiving
       memory area.

RRAATTIIOONNAALLEE
       None.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       The Base Definitions volume of POSIX.1-2017, <<ssttrriinngg..hh>>

CCOOPPYYRRIIGGHHTT
       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)
