1 /* $Id: cs_avail.h,v 1.4 1994/06/24 10:22:00 ceriel Exp $ */
3 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
4 * See the copyright notice in the ACK home directory, in the file "Copyright".
6 extern avail_p avails; /* The set of available expressions. */
8 extern avail_p av_enter(); /* (avail_p avp, occur_p ocp, byte kind)
9 * Puts the available expression in avp
10 * in the list of available expressions,
11 * if it is not already there. Add ocp to set of
12 * occurrences of this expression.
13 * If we have a new expression, we test whether
14 * the result is saved. When this expression
15 * recurs,we test if we can still use the
16 * variable into which it was saved.
17 * (Kind is the kind of the expression.)
18 * Returns a pointer into the list.
21 extern clr_avails(); /* Release all space occupied by the old list
22 * of available expressions.