src/Tools/Metis/src/PortablePolyml.sml

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Tools/Metis/src/PortablePolyml.sml	Mon Sep 13 21:09:43 2010 +0200
@@ -0,0 +1,77 @@
+(* ========================================================================= *)
+(* POLY/ML SPECIFIC FUNCTIONS                                                *)
+(* Copyright (c) 2008 Joe Hurd, distributed under the GNU GPL version 2      *)
+(* ========================================================================= *)
+
+structure Portable :> Portable =
+struct
+
+(* ------------------------------------------------------------------------- *)
+(* The ML implementation.                                                    *)
+(* ------------------------------------------------------------------------- *)
+
+val ml = "polyml";
+
+(* ------------------------------------------------------------------------- *)
+(* Pointer equality using the run-time system.                               *)
+(* ------------------------------------------------------------------------- *)
+
+fun pointerEqual (x : 'a, y : 'a) = PolyML.pointerEq(x,y);
+
+(* ------------------------------------------------------------------------- *)
+(* Timing function applications.                                             *)
+(* ------------------------------------------------------------------------- *)
+
+fun time f x =
+    let
+      fun p t =
+          let
+            val s = Time.fmt 3 t
+          in
+            case size (List.last (String.fields (fn x => x = #".") s)) of
+              3 => s
+            | 2 => s ^ "0"
+            | 1 => s ^ "00"
+            | _ => raise Fail "Portable.time"
+          end
+
+      val c = Timer.startCPUTimer ()
+
+      val r = Timer.startRealTimer ()
+
+      fun pt () =
+          let
+            val {usr,sys} = Timer.checkCPUTimer c
+            val real = Timer.checkRealTimer r
+          in
+            print
+              ("User: " ^ p usr ^ "  System: " ^ p sys ^
+               "  Real: " ^ p real ^ "\n")
+          end
+
+      val y = f x handle e => (pt (); raise e)
+
+      val () = pt ()
+    in
+      y
+    end;
+
+(* ------------------------------------------------------------------------- *)
+(* Generating random values.                                                 *)
+(* ------------------------------------------------------------------------- *)
+
+val randomWord = Random.nextWord;
+
+val randomBool = Random.nextBool;
+
+val randomInt = Random.nextInt;
+
+val randomReal = Random.nextReal;
+
+end
+
+(* ------------------------------------------------------------------------- *)
+(* Quotations a la Moscow ML.                                                *)
+(* ------------------------------------------------------------------------- *)
+
+datatype 'a frag = QUOTE of string | ANTIQUOTE of 'a;