ING_DB

WEGA/contrib/ingres/dbs/src/pqr/rg_comp.c

@@ -0,0 +1,49 @@
+/*
+** ---  RG_COMP.C ------- COMPARE OPERATIONS  ---------------------------------
+**
+**	Version: @(#)rg_comp.c		4.0	02/05/89
+**
+*/
+
+# include	"rg_int.h"
+
+static char	*cmp_op[] =
+{
+	"<",	/* bdLT	*/
+	"==",	/* bdEQ	*/
+	"<=",	/* bdLE	*/
+	">",	/* bdGT	*/
+	"!=",	/* bdNE	*/
+	">="	/* bdGE	*/
+};
+
+
+rg_compare(c, c1, c2)
+register int		c;
+register SYMBOL		*c1;
+register SYMBOL		*c2;
+{
+	register union anytype	*any1;
+	register union anytype	*any2;
+
+
+	any1 = &c1->sy_val;
+	any2 = &c2->sy_val;
+	if (c1->sy_frmt == CHAR && c2->sy_frmt == CHAR)
+	{
+		c = AAscompare(any1->cptype, c1->sy_frml,
+			     any2->cptype, c2->sy_frml);
+		if (!c)
+			return ((int) bdEQ);
+		if (c < 0)
+			return ((int) bdLT);
+		return ((int) bdGT);
+	}
+	if (ck_2_frm(c1, c2, FLOAT, sizeof (double), cmp_op[--c]))
+		return (-1);
+	if (any1->f8type == any2->f8type)
+		return ((int) bdEQ);
+	if (any1->f8type > any2->f8type)
+		return ((int) bdGT);
+	return ((int) bdLT);
+}