Initial revision

util/LLgen/src/sets.h

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+/*
+ * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ *
+ *          This product is part of the Amsterdam Compiler Kit.
+ *
+ * Permission to use, sell, duplicate or disclose this software must be
+ * obtained in writing. Requests for such permissions may be sent to
+ *
+ *      Dr. Andrew S. Tanenbaum
+ *      Wiskundig Seminarium
+ *      Vrije Universiteit
+ *      Postbox 7161
+ *      1007 MC Amsterdam
+ *      The Netherlands
+ *
+ */
+
+/*
+ *  L L G E N
+ *
+ *  An Extended LL(1) Parser Generator
+ *
+ *  Author : Ceriel J.H. Jacobs
+ */
+
+/*
+ * sets.h $Header$
+ * Some macros that deal with bitsets and their size
+ */
+
+# define BITS		(8 * sizeof (int))
+# define IN(a,i)	((a)[(i)/BITS] & (1<<((i) % BITS)))
+# define NTIN(a,i)	((a)[((i)+tbitset)/BITS]&(1<<((i)%BITS)))
+# define PUTIN(a,i)	((a)[(i)/BITS] |=(1<<((i) % BITS)))
+# define NTPUTIN(a,i)	((a)[((i)+tbitset)/BITS]|=(1<<((i)%BITS)))
+# define NBYTES(n)	(((n) + 7) / 8)
+/*
+ * The next two macros operate on byte counts!
+ */
+# define NINTS(n)	(((n) + (int) (sizeof(int) - 1)) / (int) sizeof(int))
+# define ALIGN(n)	(NINTS(n) * (int) sizeof (int))
+
+extern int	tbitset;
+extern p_set	*setptr,*maxptr,*topptr;
+extern int	tsetsize,setsize;