Class Pow2

java.lang.Object
org.jctools.util.Pow2

public final class Pow2 extends Object
Power of 2 utility functions.
  • Field Details

  • Constructor Details

    • Pow2

      public Pow2()
  • Method Details

    • roundToPowerOfTwo

      public static int roundToPowerOfTwo(int value)
      Parameters:
      value - from which next positive power of two will be found.
      Returns:
      the next positive power of 2, this value if it is a power of 2. Negative values are mapped to 1.
      Throws:
      IllegalArgumentException - is value is more than MAX_POW2 or less than 0
    • isPowerOfTwo

      public static boolean isPowerOfTwo(int value)
      Parameters:
      value - to be tested to see if it is a power of two.
      Returns:
      true if the value is a power of 2 otherwise false.
    • align

      public static long align(long value, int alignment)
      Align a value to the next multiple up of alignment. If the value equals an alignment multiple then it is returned unchanged.
      Parameters:
      value - to be aligned up.
      alignment - to be used, must be a power of 2.
      Returns:
      the value aligned to the next boundary.