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

       fputws — put a wide-character string on a stream

SYNOPSIS

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

       int fputws(const wchar_t *restrict ws, FILE *restrict 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.1‐2017 defers to the ISO C standard.

       The  fputws()  function  shall  write  a  character  string  corresponding  to  the (null-
       terminated) wide-character string pointed to by ws to the stream pointed to by stream.  No
       character corresponding to the terminating null wide-character code shall be written.

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

RETURN VALUE

       Upon successful completion, fputws() shall return a  non-negative  number.  Otherwise,  it
       shall  return  -1,  set  an  error indicator for the stream, and set errno to indicate the
       error.

ERRORS

       Refer to fputwc().

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       The fputws() function does not append a <newline>.

       This volume of POSIX.1‐2017 requires that  successful  completion  simply  return  a  non-
       negative  integer. There are at least three known different implementation conventions for
       this requirement:

        *  Return a constant value.

        *  Return the last character written.

        *  Return the number of bytes written. Note that this implementation convention cannot be
           adhered  to  for  strings  longer  than  {INT_MAX}  bytes  as  the  value would not be
           representable in  the  return  type  of  the  function.  For  backwards-compatibility,
           implementations  can  return the number of bytes for strings of up to {INT_MAX} bytes,
           and return {INT_MAX} for all longer strings.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

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

       The Base Definitions volume of POSIX.1‐2017, <stdio.h>, <wchar.h>

COPYRIGHT

       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 .