many changes

util/grind/expr.h

@@ -0,0 +1,28 @@
+/* $Header$ */
+
+/* expression operators. Do not change values, as they are used as
+   indices into arrays.
+*/
+
+#define E_NOT	1
+#define E_DEREF	2
+#define E_AND	3
+#define E_OR	4
+#define E_DIV	5		/* equal to truncated quotient */
+#define E_MOD	6		/* x = (x E_DIV y) * y + x E_MOD y,
+				   0 <= (x E_MOD y) < y
+				*/
+#define E_ZDIV	7		/* quotient rounded to 0 */
+#define E_ZMOD	8		/* remainder of E_ZDIV */
+#define E_IN	9		/* set membership */
+#define E_ARRAY	10
+#define E_PLUS	11
+#define E_MIN	12
+#define E_MUL	13
+#define E_EQUAL	14
+#define E_NOTEQUAL 15
+#define E_LTEQUAL 16
+#define E_GTEQUAL 17
+#define E_LT	18
+#define E_GT	19
+#define E_SELECT 20