WMEMMOVE(3)                POSIX Programmer's Manual               WMEMMOVE(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
       wmemmove -- copy wide characters in memory with overlapping areas

SSYYNNOOPPSSIISS
       #include <wchar.h>

       wchar_t *wmemmove(wchar_t *_w_s_1, const wchar_t *_w_s_2, size_t _n);

DDEESSCCRRIIPPTTIIOONN
       The functionality described on this reference page is aligned with the
       ISO C standard. Any conflict between the requirements described here
       and the ISO C standard is unintentional. This volume of POSIX.1-2017
       defers to the ISO C standard.

       The _w_m_e_m_m_o_v_e() function shall copy _n wide characters from the object
       pointed to by _w_s_2 to the object pointed to by _w_s_1.  Copying shall take
       place as if the _n wide characters from the object pointed to by _w_s_2 are
       first copied into a temporary array of _n wide characters that does not
       overlap the objects pointed to by _w_s_1 or _w_s_2, and then the _n wide
       characters from the temporary array are copied into the object pointed
       to by _w_s_1.

       This function shall not be affected by locale and all wwcchhaarr__tt values
       shall be treated identically. The null wide character and wwcchhaarr__tt
       values not corresponding to valid characters shall not be treated
       specially.

       If _n is zero, the application shall ensure that _w_s_1 and _w_s_2 are valid
       pointers, and the function shall copy zero wide characters.

RREETTUURRNN VVAALLUUEE
       The _w_m_e_m_m_o_v_e() function shall return the value of _w_s_1.

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
       None.

RRAATTIIOONNAALLEE
       None.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _w_m_e_m_c_h_r(), _w_m_e_m_c_m_p(), _w_m_e_m_c_p_y(), _w_m_e_m_s_e_t()

       The Base Definitions volume of POSIX.1-2017, <<wwcchhaarr..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                          WMEMMOVE(3)
