Changeset 9287

Timestamp:

03/05/13 18:45:44 (12 years ago)

Author:

mkommend

Message:

#2007: Adapated rng of AlgLib 3.7.0 to the changes in #1968.

File:

• trunk/sources/HeuristicLab.ExtLibs/HeuristicLab.ALGLIB/3.7.0/ALGLIB-3.7.0/ap.cs (modified) (4 diffs)

trunk/sources/HeuristicLab.ExtLibs/HeuristicLab.ALGLIB/3.7.0/ALGLIB-3.7.0/ap.cs

@@ -570 +570 @@
     public class math
     {
-        //public static System.Random RndObject = new System.Random(System.DateTime.Now.Millisecond);
-        public static System.Random rndobject = new System.Random(System.DateTime.Now.Millisecond + 1000*System.DateTime.Now.Second + 60*1000*System.DateTime.Now.Minute);
+      //public static System.Random RndObject = new System.Random(System.DateTime.Now.Millisecond);
+      [ThreadStatic] //mkommend: added thread static attribute to RNG to have a separate instance per thread and allow modification of the seed
+      public static System.Random rndobject;
 
         public const double machineepsilon = 5E-16;
@@ -579 +580 @@
         public static bool isfinite(double d)
         {
+            if (rndobject == null) rndobject = new System.Random(System.DateTime.Now.Millisecond + 1000 * System.DateTime.Now.Second + 60 * 1000 * System.DateTime.Now.Minute);
             return !System.Double.IsNaN(d) && !System.Double.IsInfinity(d);
         }
@@ -585 +587 @@
         {
             double r = 0;
+            if (rndobject == null) rndobject = new System.Random(System.DateTime.Now.Millisecond + 1000 * System.DateTime.Now.Second + 60 * 1000 * System.DateTime.Now.Minute);
             lock(rndobject){ r = rndobject.NextDouble(); }
             return r;
@@ -591 +594 @@
         {
             int r = 0;
+            if (rndobject == null) rndobject = new System.Random(System.DateTime.Now.Millisecond + 1000 * System.DateTime.Now.Second + 60 * 1000 * System.DateTime.Now.Minute);
             lock(rndobject){ r = rndobject.Next(N); }
             return r;