FWIDE
3
1999-11-17
GNU
Linux Programmer's Manual
orientation of stream. It returns a value > 0 if stream is wide-character oriented, i.e. if wide character I/O is permitted but char I/O is disallowed. It returns a value < 0 if stream is byte oriented, i.e. 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 character I/O operation). Once a stream has an orientation, it cannot be changed and persists until the stream is closed. When mode is non-zero, the fwide function first attempts to set stream's orientation (to wide-character oriented if mode > 0, or to byte oriented if mode < 0). It then returns a value denoting the current orientation, as above.
changing it. A return value > 0 means wide-character oriented. A return value < 0 means byte oriented. A return value zero means undecided.
fprintf function with the %lc and %ls directives. Char oriented output to a wide-character oriented stream can be performed through the fwprintf function with the %c and %s directives. |
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