Ran |
Ran004: W.H. Press/S.A. Teukolsky: Numerical recipies pseudo-DES ran4.
Returns an integer random number uniformly distributed within [0,4294967295].
Inheritance HierarchyNamespace: Altaxo.Calc.Probability.Old
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3179.0 (4.8.3179.0)
SyntaxC#
public class Ran004 : RandomGenerator
The Ran004 type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | Ran004 | Initializes a new instance of the Ran004 class |
| Ran004(UInt32) | Initializes a new instance of the Ran004 class |
Properties| Name | Description | |
|---|---|---|
 | Maximum | The maximum value of the random number which can be returned. (Inherited from RandomGenerator) |
| Seed | The seed value. (Inherited from RandomGenerator) |
Methods| Name | Description | |
|---|---|---|
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object) |
| GetHashCode | Serves as the default hash function. (Inherited from Object) |
| GetType | Gets the Type of the current instance. (Inherited from Object) |
| Long | (Overrides RandomGeneratorLong) |
| Long(UInt32, UInt32) | |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object) |
| ToString | Returns a string that represents the current object. (Inherited from Object) |
Fields| Name | Description | |
|---|---|---|
 | max_val | Uniform long int values within [0...max_val]. (Inherited from RandomGenerator) |
| seed | The seed of the random generator. (Inherited from RandomGenerator) |
RemarksC#
The period length for one seed is 2^32, but the seed is incremented automatically if the series for one seed is exhausted. There are 2^32 possible seeds. Notes: a) The original version of Ref. (1) is not portable to machines with larger word lengths. That means different random sequences are obtained for 32-bit long integers and 64-bit long integers. This version is made portable by using bit-masks. The run time penalty is neglegible. b) The random sequence for one seed has only a period of maximally 2^32. This is definitly to short for nowadays MC simulations. In this version the seed is automatically incremented to jump to the next segment when one segment is exhausted. c) Also the extremely inconvenient interface of the original has been changed. Reference: (1) W.H. Press, S.A. Teukolsky, Vetterling, Teukolsky, Numerical Recipies in C, 2nd edition, 1992. (2) Major modifications a) to c) and inclusion into Matpack by B. M. Gammel, Apr 1, 1997 (no joke!)
See Also