Enclosed below I have a patch to allow a btree index on the int8 type.

I would like some feedback on what the hash function for the int8 hash
function
in the ./backend/access/hash/hashfunc.c should return.

Also, could someone (maybe Tomas Lockhart?) look-over the patch and make
sure
the system table entries are correct?  I've tried to research them as
much as I
could, but some of them are still not clear to me.

Thanks,
-Ryan

src/backend/access/hash/hashfunc.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashfunc.c,v 1.13 1999/02/13 23:14:18 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/hash/hashfunc.c,v 1.14 1999/03/14 05:08:55 momjian Exp $
  *
  * NOTES
  *	  These functions are stored in pg_amproc.	For each operator class
@@ -32,6 +32,12 @@ hashint4(uint32 key)
 	return ~key;
 }
 
+uint32
+hashint8(uint64 *key)
+{
+	return ~((uint32)key);
+}
+
 /* Hash function from Chris Torek. */
 uint32
 hashfloat4(float32 keyp)

src/backend/access/nbtree/nbtcompare.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.21 1999/02/13 23:14:31 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.22 1999/03/14 05:08:56 momjian Exp $
  *
  *	NOTES
  *		These functions are stored in pg_amproc.  For each operator class
@@ -39,6 +39,17 @@ btint4cmp(int32 a, int32 b)
 	return a - b;
 }
 
+int32
+btint8cmp(int64 *a, int64 *b)
+{
+	if (*a > *b)
+		return 1;
+	else if (*a == *b)
+		return 0;
+	else
+		return -1;
+}
+
 int32
 btint24cmp(int16 a, int32 b)
 {