WMEMCHR(3)                 POSIX Programmer's Manual                WMEMCHR(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
       wmemchr -- find a wide character in memory

SSYYNNOOPPSSIISS
       #include <wchar.h>

       wchar_t *wmemchr(const wchar_t *_w_s, wchar_t _w_c, 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_c_h_r() function shall locate the first occurrence of _w_c in the
       initial _n wide characters of the object pointed to by _w_s.  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 is a valid pointer
       and the function behaves as if no valid occurrence of _w_c is found.

RREETTUURRNN VVAALLUUEE
       The _w_m_e_m_c_h_r() function shall return a pointer to the located wide
       character, or a null pointer if the wide character does not occur in
       the object.

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_m_p(), _w_m_e_m_c_p_y(), _w_m_e_m_m_o_v_e(), _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                           WMEMCHR(3)
