From 39cbf1a39c008ac738b121178a5110cafd8c6ffa Mon Sep 17 00:00:00 2001
From: Ferruccio Guidi <ferruccio.guidi@unibo.it>
Date: Sat, 21 Sep 2002 18:42:07 +0000
Subject: [PATCH] intersect.ml cleaned

---
 helm/ocaml/mathql_interpreter/intersect.ml | 41 +++++++++++++++-------
 1 file changed, 29 insertions(+), 12 deletions(-)

diff --git a/helm/ocaml/mathql_interpreter/intersect.ml b/helm/ocaml/mathql_interpreter/intersect.ml
index 9a0f408ef..e56d1d1f3 100644
--- a/helm/ocaml/mathql_interpreter/intersect.ml
+++ b/helm/ocaml/mathql_interpreter/intersect.ml
@@ -65,18 +65,33 @@ let rec prod (as1, as2) =
 ;;
 
 (* Intersection between two resource sets, preserves order and gets rid of duplicates *)
-let rec intersect_ex rs1 rs2 =
-  match (rs1, rs2) with
-     [],_
-   | _,[] -> []
-   | (uri1,as1)::tl1,
-     (uri2,as2)::_ when uri1 < uri2 -> intersect_ex tl1 rs2
-   | (uri1,as1)::_,
-     (uri2,as2)::tl2 when uri2 < uri1 -> intersect_ex rs1 tl2
-   | (uri1,as1)::tl1,
-     (uri2,as2)::tl2 -> (uri1, prod(as1,as2))::intersect_ex tl1 tl2 
+let intersect_ex rs1 rs2 =
+  let rec intersect_aux rs1 rs2 =
+    match (rs1, rs2) with
+       [],_
+     | _,[] -> []
+     | (uri1,as1)::tl1,
+       (uri2,as2)::_ when uri1 < uri2 -> intersect_aux tl1 rs2
+     | (uri1,as1)::_,
+       (uri2,as2)::tl2 when uri2 < uri1 -> intersect_aux rs1 tl2
+     | (uri1,as1)::tl1,
+       (uri2,as2)::tl2 -> (uri1, prod(as1,as2))::intersect_aux tl1 tl2 
+  in
+  let before = Sys.time () in
+  let res = intersect_aux rs1 rs2 in
+  let after = Sys.time () in
+  let ll1 = string_of_int (List.length rs1) in
+  let ll2 = string_of_int (List.length rs2) in
+  let diff = string_of_float (after -. before) in
+  print_endline
+   ("INTERSECT(" ^ ll1 ^ "," ^ ll2 ^ ") = " ^ string_of_int (List.length res) ^
+    ": " ^ diff ^ "s") ;
+  flush stdout ;
+  res
 ;;
 
+(*
+
 let intersect_ex l1 l2 =
  (* PRE-CLAUDIO
  (*let _ = print_string ("INTERSECT ")
@@ -129,9 +144,9 @@ let intersect_ex l1 l2 =
    in
     (*let _ = print_endline (string_of_float (Unix.time () -. t)); flush stdout in*)
     result*)
- let before = Unix.time () in
+ let before = Sys.time () in
  let res = intersect_ex l1 l2 in
- let after = Unix.time () in
+ let after = Sys.time () in
   let ll1 = string_of_int (List.length l1) in
   let ll2 = string_of_int (List.length l2) in
   let diff = string_of_float (after -. before) in
@@ -141,3 +156,5 @@ let intersect_ex l1 l2 =
   flush stdout ;
   res
 ;;
+
+*)
-- 
2.39.2