bionic (3) putwc.3posix.gz

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


NAME
       putwc — put a wide character on a stream


SYNOPSIS
       #include <stdio.h>
       #include <wchar.h>

       wint_t putwc(wchar_t wc, FILE *stream);


DESCRIPTION
       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.1‐2008 defers to the ISO C standard.

       The  putwc() function shall be equivalent to fputwc(), except that if it is implemented as a macro it may
       evaluate stream more than once, so the argument should never be an expression with side-effects.


RETURN VALUE
       Refer to fputwc().


ERRORS
       Refer to fputwc().

       The following sections are informative.


EXAMPLES
       None.


APPLICATION USAGE
       Since it may be  implemented  as  a  macro,  putwc()  may  treat  a  stream  argument  with  side-effects
       incorrectly.  In  particular,  putwc(wc,*f++) need not work correctly. Therefore, use of this function is
       not recommended; fputwc() should be used instead.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       Section 2.5, Standard I/O Streams, fputwc()

       The Base Definitions volume of POSIX.1‐2008, <stdio.h>, <wchar.h>


       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition,
       Standard  for  Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers,  Inc
       and  The  Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/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 .