fputwc man page on Archlinux

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FPUTWC(3P)		   POSIX Programmer's Manual		    FPUTWC(3P)

       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.

       fputwc — put a wide-character code on a stream

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

       wint_t fputwc(wchar_t wc, FILE *stream);

       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  fputwc()  function	shall write the character corresponding to the
       wide-character code wc to the output stream pointed to  by  stream,  at
       the  position  indicated	 by the associated file-position indicator for
       the stream (if defined), and advances the indicator  appropriately.  If
       the  file  cannot  support  positioning	requests, or if the stream was
       opened with append mode,	 the  character	 is  appended  to  the	output
       stream. If an error occurs while writing the character, the shift state
       of the output file is left in an undefined state.

       The last data modification and last file status	change	timestamps  of
       the file shall be marked for update between the successful execution of
       fputwc() and the next successful completion of a call  to  fflush()  or
       fclose() on the same stream or a call to exit() or abort().

       The fputwc() function shall not change the setting of errno if success‐

       Upon successful completion, fputwc() shall return  wc.	Otherwise,  it
       shall return WEOF, the error indicator for the stream shall be set, and
       errno shall be set to indicate the error.

       The fputwc() function shall fail if either the stream is unbuffered  or
       data in the stream's buffer needs to be written, and:

       EAGAIN The  O_NONBLOCK  flag  is set for the file descriptor underlying
	      stream and the thread would be delayed in the write operation.

       EBADF  The file descriptor  underlying  stream  is  not	a  valid  file
	      descriptor open for writing.

       EFBIG  An  attempt was made to write to a file that exceeds the maximum
	      file size or the file size limit of the process.

       EFBIG  The file is a regular file and an attempt was made to  write  at
	      or  beyond  the offset maximum associated with the corresponding

       EILSEQ The wide-character code wc does not correspond to a valid	 char‐

       EINTR  The  write operation was terminated due to the receipt of a sig‐
	      nal, and no data was transferred.

       EIO    A physical I/O error has occurred, or the process is a member of
	      a	 background  process group attempting to write to its control‐
	      ling terminal, TOSTOP is set, the calling thread is not blocking
	      SIGTTOU,	the  process  is not ignoring SIGTTOU, and the process
	      group of the process  is	orphaned.   This  error	 may  also  be
	      returned under implementation-defined conditions.

       ENOSPC There  was  no free space remaining on the device containing the

       EPIPE  An attempt is made to write to a pipe or FIFO that is  not  open
	      for  reading by any process. A SIGPIPE signal shall also be sent
	      to the thread.

       The fputwc() function may fail if:

       ENOMEM Insufficient storage space is available.

       ENXIO  A request was made of a nonexistent device, or the  request  was
	      outside the capabilities of the device.

       The following sections are informative.





       Section	 2.5,  Standard	 I/O  Streams,	ferror(),  fopen(),  setbuf(),

       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 Electri‐
       cal 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.ker‐
       nel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group		     2013			    FPUTWC(3P)

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