mcs/class/Microsoft.VisualBasic/Microsoft.VisualBasic/VBMath.cs

   1 //
   2 // VBMath.cs
   3 //
   4 // Author:
   5 //   Chris J Breisch (cjbreisch@altavista.net)
   6 //   Francesco Delfino (pluto@tipic.com)
   7 //
   8 // (C) 2002 Chris J Breisch
   9 // (C) 2002 Tipic Inc
  10 //
  11
  12 using System;
  13
  14 namespace Microsoft.VisualBasic {
  15         [Microsoft.VisualBasic.CompilerServices.StandardModuleAttribute]
  16         sealed public class VBMath {
  17                 // Declarations
  18                 // Constructors
  19                 // Properties
  20                 static Random rnd = new Random();
  21                 static float last = (float)rnd.NextDouble();
  22                 // Methods
  23                 public static float Rnd () {
  24                         last =  (float)rnd.NextDouble();
  25                         return last;
  26                 }
  27                 public static float Rnd (float Number)
  28                 {\r
  29                         if (Number == 0.0)
  30                         {
  31                                 return last;
  32                         } \r
  33                         else if (Number < 0.0 )\r
  34                         {
  35                                 //fd: What does this mean?
  36                                 //fd: ms-help://MS.VSCC/MS.MSDNVS/script56/html/vsstmRandomize
  37                                 //fd: ms-help://MS.VSCC/MS.MSDNVS/script56/html/vsfctrnd.htm
  38                                 Randomize(Number);
  39                                 return Rnd();
  40                         }
  41                         return Rnd();
  42                 }
  43                 public static void Randomize () {
  44                         rnd = new Random();
  45                 }
  46                 [MonoTODO("Rethink the double => int conversion")]
  47                 public static void Randomize (double Number)
  48                 {
  49                         rnd = new Random((int)Number);
  50                 }
  51                 // Events
  52         };
  53 }