--- a/src/Tools/Spec_Check/random.ML Thu Jul 08 15:25:58 2021 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,46 +0,0 @@
-(* Title: Tools/Spec_Check/random.ML
- Author: Lukas Bulwahn and Nicolai Schaffroth, TU Muenchen
- Author: Christopher League
-
-Random number engine.
-*)
-
-signature RANDOM =
-sig
- type rand
- val new : unit -> rand
- val range : int * int -> rand -> int * rand
- val split : rand -> rand * rand
-end
-
-structure Random : RANDOM =
-struct
-
-type rand = real
-
-val a = 16807.0
-val m = 2147483647.0
-
-fun nextrand seed =
- let
- val t = a * seed
- in
- t - m * real(floor(t/m))
- end
-
-val new = nextrand o Time.toReal o Time.now
-
-fun range (min, max) =
- if min > max then raise Domain (* TODO: raise its own error *)
- else fn r => (min + (floor(real(max-min+1) * r / m)), nextrand r)
-
-fun split r =
- let
- val r = r / a
- val r0 = real(floor r)
- val r1 = r - r0
- in
- (nextrand r0, nextrand r1)
- end
-
-end