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- /* $Id$ */
- /*
- * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
- * See the copyright notice in the ACK home directory, in the file "Copyright".
- */
- extern avail_p avails; /* The set of available expressions. */
- extern avail_p av_enter(); /* (avail_p avp, occur_p ocp, byte kind)
- * Puts the available expression in avp
- * in the list of available expressions,
- * if it is not already there. Add ocp to set of
- * occurrences of this expression.
- * If we have a new expression, we test whether
- * the result is saved. When this expression
- * recurs,we test if we can still use the
- * variable into which it was saved.
- * (Kind is the kind of the expression.)
- * Returns a pointer into the list.
- */
- extern clr_avails(); /* Release all space occupied by the old list
- * of available expressions.
- */
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