Class XoShiRo512PlusPlus

All Implemented Interfaces:
RandomLongSource, JumpableUniformRandomProvider, LongJumpableUniformRandomProvider, RestorableUniformRandomProvider, UniformRandomProvider

public class XoShiRo512PlusPlus extends AbstractXoShiRo512
A fast all-purpose generator.

This is a member of the Xor-Shift-Rotate family of generators. Memory footprint is 512 bits and the period is 2512-1. Speed is expected to be slower than XoShiRo256StarStar.

Since:
1.3
See Also:
  • Constructor Details

    • XoShiRo512PlusPlus

      public XoShiRo512PlusPlus(long[] seed)
      Creates a new instance.
      Parameters:
      seed - Initial seed. If the length is larger than 8, only the first 8 elements will be used; if smaller, the remaining elements will be automatically set. A seed containing all zeros will create a non-functional generator.
    • XoShiRo512PlusPlus

      public XoShiRo512PlusPlus(long seed0, long seed1, long seed2, long seed3, long seed4, long seed5, long seed6, long seed7)
      Creates a new instance using an 8 element seed. A seed containing all zeros will create a non-functional generator.
      Parameters:
      seed0 - Initial seed element 0.
      seed1 - Initial seed element 1.
      seed2 - Initial seed element 2.
      seed3 - Initial seed element 3.
      seed4 - Initial seed element 4.
      seed5 - Initial seed element 5.
      seed6 - Initial seed element 6.
      seed7 - Initial seed element 7.
    • XoShiRo512PlusPlus

      protected XoShiRo512PlusPlus(XoShiRo512PlusPlus source)
      Creates a copy instance.
      Parameters:
      source - Source to copy.
  • Method Details

    • nextOutput

      protected long nextOutput()
      Use the current state to compute the next output from the generator. The output function shall vary with respect to different generators. This method is called from AbstractXoShiRo512.next() before the current state is updated.
      Specified by:
      nextOutput in class AbstractXoShiRo512
      Returns:
      the next output
    • copy

      protected XoShiRo512PlusPlus copy()
      Create a copy.
      Specified by:
      copy in class AbstractXoShiRo512
      Returns:
      the copy