Class XoShiRo512Plus

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

public class XoShiRo512Plus extends AbstractXoShiRo512
A fast 64-bit generator suitable for double generation. This is slightly faster than the all-purpose generator XoShiRo512StarStar.

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 XoShiRo256Plus.

Since:
1.3
See Also:
  • Constructor Details

    • XoShiRo512Plus

      public XoShiRo512Plus(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.
    • XoShiRo512Plus

      public XoShiRo512Plus(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.
    • XoShiRo512Plus

      protected XoShiRo512Plus(XoShiRo512Plus 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 XoShiRo512Plus copy()
      Create a copy.
      Specified by:
      copy in class AbstractXoShiRo512
      Returns:
      the copy