Cross-data-type comparisons are now indexable by btrees, pursuant to my

pghackers proposal of 8-Nov.  All the existing cross-type comparison
operators (int2/int4/int8 and float4/float8) have appropriate support.
The original proposal of storing the right-hand-side datatype as part of
the primary key for pg_amop and pg_amproc got modified a bit in the event;
it is easier to store zero as the 'default' case and only store a nonzero
when the operator is actually cross-type.  Along the way, remove the
long-since-defunct bigbox_ops operator class.

1 files changed, 21 insertions, 1 deletions

diff --git a/src/backend/utils/adt/float.c b/src/backend/utils/adt/float.c
index 9f0fa0de32d..1493a58de74 100644
--- a/src/backend/utils/adt/float.c
+++ b/src/backend/utils/adt/float.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.94 2003/09/25 06:58:03 petere Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.95 2003/11/12 21:15:54 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -839,6 +839,26 @@ btfloat8cmp(PG_FUNCTION_ARGS)
 	PG_RETURN_INT32(float8_cmp_internal(arg1, arg2));
 }
 
+Datum
+btfloat48cmp(PG_FUNCTION_ARGS)
+{
+	float4		arg1 = PG_GETARG_FLOAT4(0);
+	float8		arg2 = PG_GETARG_FLOAT8(1);
+
+	/* widen float4 to float8 and then compare */
+	PG_RETURN_INT32(float8_cmp_internal(arg1, arg2));
+}
+
+Datum
+btfloat84cmp(PG_FUNCTION_ARGS)
+{
+	float8		arg1 = PG_GETARG_FLOAT8(0);
+	float4		arg2 = PG_GETARG_FLOAT4(1);
+
+	/* widen float4 to float8 and then compare */
+	PG_RETURN_INT32(float8_cmp_internal(arg1, arg2));
+}
+
 
 /*
  *		===================