Class JenkinsSmallFast64

All Implemented Interfaces:
RandomLongSource, RestorableUniformRandomProvider, UniformRandomProvider

public class JenkinsSmallFast64 extends LongProvider
Implement Bob Jenkins's small fast (JSF) 64-bit generator.

The state size is 256-bits.

Since:
1.3
See Also:
  • Field Details

    • a

      private long a
      State a.
    • b

      private long b
      State b.
    • c

      private long c
      State c.
    • d

      private long d
      Statd d.
  • Constructor Details

    • JenkinsSmallFast64

      public JenkinsSmallFast64(Long seed)
      Creates an instance with the given seed.
      Parameters:
      seed - Initial seed.
  • Method Details

    • setSeedInternal

      private void setSeedInternal(long seed)
      Seeds the RNG.
      Parameters:
      seed - Seed.
    • next

      public final long next()
      Return the next random value.
      Returns:
      the next random value.
    • getStateInternal

      protected byte[] getStateInternal()
      Creates a snapshot of the RNG state.
      Overrides:
      getStateInternal in class LongProvider
      Returns:
      the internal state.
    • setStateInternal

      protected void setStateInternal(byte[] s)
      Resets the RNG to the given state.
      Overrides:
      setStateInternal in class LongProvider
      Parameters:
      s - State (previously obtained by a call to BaseProvider.getStateInternal()).
      See Also: