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    The following form allows you to view linux man pages.

    Command:

    fwide

    
    
    

    SYNOPSIS

           #include <wchar.h>
    
           int fwide(FILE *stream, int mode);
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           fwide():
               _XOPEN_SOURCE >= 500 || _ISOC99_SOURCE ||
               _POSIX_C_SOURCE >= 200112L;
               or cc -std=c99
    
    
    

    DESCRIPTION

           When mode is zero, the fwide() function determines the current orienta-
           tion of stream.  It returns a positive value if stream is  wide-charac-
           ter  oriented, that is, if wide-character I/O is permitted but char I/O
           is disallowed.  It returns a negative value if stream is byte oriented--
           that is, if char I/O is permitted but wide-character I/O is disallowed.
           It returns zero if stream has no orientation yet; in this case the next
           I/O operation might change the orientation (to byte oriented if it is a
           char I/O operation, or to wide-character oriented if it is a wide-char-
           acter I/O operation).
    
           Once  a  stream  has  an orientation, it cannot be changed and persists
           until the stream is closed.
    
           When mode is nonzero,  the  fwide()  function  first  attempts  to  set
           stream's  orientation  (to  wide-character  oriented if mode is greater
           than 0, or to byte oriented if mode is less than 0).  It then returns a
           value denoting the current orientation, as above.
    
    
    

    RETURN VALUE

           The  fwide()  function returns the stream's orientation, after possibly
           changing it.  A positive return value means wide-character oriented.  A
           negative  return  value  means  byte  oriented.  A return value of zero
           means undecided.
    
    
    

    CONFORMING TO

           C99, POSIX.1-2001.
    
    
    

    NOTES

           Wide-character output to  a  byte  oriented  stream  can  be  performed
           through the fprintf(3) function with the %lc and %ls directives.
    
           Char  oriented  output  to a wide-character oriented stream can be per-
           formed through the fwprintf(3) function with the %c and %s  directives.
    
    
    

    SEE ALSO

           fprintf(3), fwprintf(3)
    
    
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