Class DoubleWTables


  • public class DoubleWTables
    extends DoubleModMath
    Helper class for generating and caching tables of powers of the n:th root of unity.
    Since:
    1.7.0
    Version:
    1.9.0
    Author:
    Mikko Tommila
    • Method Detail

      • getWTable

        public static double[] getWTable​(int modulus,
                                         int length)
        Get a table of powers of n:th root of unity.
        Parameters:
        modulus - The index of the modulus to be used.
        length - The length of the table to be returned, i.e. n.
        Returns:
        The table of powers of the n:th root of unity.
      • getInverseWTable

        public static double[] getInverseWTable​(int modulus,
                                                int length)
        Get a table of inverses of powers of n:th root of unity.
        Parameters:
        modulus - The index of the modulus to be used.
        length - The length of the table to be returned, i.e. n.
        Returns:
        The table of inverses of powers of the n:th root of unity.