fputwc_unlo man page on HP-UX

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putwc(3C)							     putwc(3C)

       putwc(), putwchar(), fputwc() - put a wide character on a stream file

   Obsolescent Interfaces
       These  functions	 are  compliant	 with  the  XPG4 Worldwide Portability
       Interface wide-character I/O functions.	They parallel the 8-bit	 char‐
       acter I/O functions defined in putc(3S).

       Writes the character corresponding to the wide character
		      wc onto the output stream at the position where the file
		      pointer is pointing.  is defined as and are defined both
		      as macros and as functions.

       Behaves like   but is a function rather than a macro, and can therefore
		      be used as an argument.

       Output streams, with the exception of the standard error stream are  by
       default	buffered  if  the output refers to a file and line-buffered if
       the output refers to a terminal.	 The standard error output stream,  is
       by  default  unbuffered, but use of (see fopen(3S)) causes it to become
       buffered or line-buffered.  or (see setbuf(3S)) can be used  to	change
       the stream's buffering strategy.

       Definitions for these functions, the type wint_t and the value WEOF are
       provided in the header.

   Obsolescent Interfaces
       and put a wide character on a stream file.

       To use the prototype, the flag must be passed as a compiler  option  or
       defined as a macro in source files.

       After  or is applied to a stream, the stream becomes byte-oriented (see

       The category determines how wide character conversions are done.

   International Code Set Support
       Single- and multi-byte character code sets are supported.

       On success, and each return the wide  character	corresponding  to  the
       value  they have written.  On failure, they return the constant set the
       error indicator for the stream, and set to indicate the error.

       and fail if either the stream is unbuffered, or stream's buffer	needed
       to be flushed causing an underlying call to be invoked, and:

	      [EAGAIN]	     The  flag is set for the file descriptor underly‐
			     ing stream and the process 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 process's file size limit or the max‐
			     imum file size (see ulimit(2)).

	      [EINTR]	     A signal was caught during the system call.

	      [EIO]	     A physical I/O error has occurred, or the process
			     is	 in a background process group and is attempt‐
			     ing to write to its controlling terminal, is set,
			     the  process is neither ignoring nor blocking the
			     signal, and the process group of the  process  is

	      [ENOSPC]	     There  was	 no free space remaining on the device
			     containing the file.

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

	      [EILSEQ]	     The wide character wc does not  correspond	 to  a
			     valid character.

       Additional values can be set by the underlying function (see write(2)).

       Line  buffering	may cause confusion or malfunctioning of programs that
       use wide character I/O routines but use themselves to read  from	 stan‐
       dard  input.  When a large amount of computation is done after printing
       part of a  line	on  an	output	terminal,  it  is  necessary  to  (see
       fclose(3S)) the standard output before beginning the computation.

       and  are	 obsolescent  interfaces supported only for compatibility with
       existing DCE applications. New multithreaded  applications  should  use

       was developed by OSF and HP.

       fclose(3S), ferror(3S), flockfile(3S), fopen(3S), getwc(3C), fread(3S),
       printf(3S), putws(3C), setbuf(3S), orientation(5), thread_safety(5).


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