| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
Arguments: stream &rest flag-names
Removes (via logandc2) the specified instance flags from the standard-instance object that is the stream. Note that this flags field has no correlation to a flags slot in the stream. You may inspect a stream in raw mode to see the instance-flags (see inspector.htm). This macro may be used in device-close methods.
Valid instance flags are placed into the following groups:
:gray
(identifies a Gray or fundamental-stream) or
:simple
(identifies a simple-stream).
A stream instance that has neither bit set is not considered a stream.
:input
(stream may perform input operations); :output
(stream may perform output operations). A stream instance that has
neither bit set is not considered an open stream.
:dual
(stream is a dual-channel stream);
:string
(stream is a string-stream). A stream with
neither bit set is considered a single-channel stream
You must load the :iodefs
module to use this
macro. Do that by evaluating (require :iodefs)
. (It
is not an error to evaluate that form if the module is already
loaded.) This macro is intended for implementing device-level
functionality and should not be used except for that purpose. See Simple-stream Description
in streams.htm for a description of the device-level.
See streams.htm for information on the simple-streams implementation in Allegro CL.
Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |