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46 .TH FWIDE 3C "Jun 3, 2015"
48 fwide \- set stream orientation
55 \fBint\fR \fBfwide\fR(\fBFILE *\fR\fIstream\fR, \fBint\fR \fImode\fR);
60 The \fBfwide()\fR function determines the orientation of the stream pointed to
61 by \fIstream\fR. If \fImode\fR is greater than 0, the function first attempts
62 to make the stream wide-oriented. If \fImode\fR is less than 0, the function
63 first attempts to make the stream byte-oriented. Otherwise, \fImode\fR is 0
64 and the function does not alter the orientation of the stream.
67 If the orientation of the stream has already been determined, \fBfwide()\fR
71 Because no return value is reserved to indicate an error, an application
72 wishing to check for error situations should set \fBerrno\fR to 0, then call
73 \fBfwide()\fR, then check \fBerrno\fR and if it is non-zero, assume an error
77 The \fBfwide()\fR function returns a value greater than 0 if, after the call,
78 the stream has wide-orientation, a value less than 0 if the stream has
79 byte-orientation, or 0 if the stream has no orientation.
82 The \fBfwide()\fR function may fail if:
89 The \fIstream\fR argument is not a valid stream.
94 A call to \fBfwide()\fR with \fImode\fR set to 0 can be used to determine the
95 current orientation of a stream.
98 See \fBattributes\fR(5) for descriptions of the following attributes:
106 ATTRIBUTE TYPE ATTRIBUTE VALUE
108 Interface Stability Standard
115 \fBattributes\fR(5), \fBstandards\fR(5)