Polynomial
cern.jet.math

Class Polynomial



  • public class Polynomialextends Constants
    Polynomial functions.
    • Method Summary

      Methods 
      Modifier and TypeMethod and Description
      static doublep1evl(double x, double[] coef, int N)
      Evaluates the given polynomial of degree N at x, assuming coefficient of N is 1.0.
      static doublepolevl(double x, double[] coef, int N)
      Evaluates the given polynomial of degree N at x.
    • Method Detail

      • p1evl

        public static double p1evl(double x,           double[] coef,           int N)                    throws ArithmeticException
        Evaluates the given polynomial of degree N at x, assuming coefficient of N is 1.0. Otherwise same as polevl().
                             2          N y  =  C  + C x + C x  +...+ C x        0    1     2          N where C  = 1 and hence is omitted from the array.        N Coefficients are stored in reverse order: coef[0] = C  , ..., coef[N-1] = C  .            N-1                   0 Calling arguments are otherwise the same as polevl(). 
        In the interest of speed, there are no checks for out of bounds arithmetic.
        Parameters:
        x - argument to the polynomial.
        coef - the coefficients of the polynomial.
        N - the degree of the polynomial.
        Throws:
        ArithmeticException
      • polevl

        public static double polevl(double x,            double[] coef,            int N)                     throws ArithmeticException
        Evaluates the given polynomial of degree N at x.
                             2          N y  =  C  + C x + C x  +...+ C x        0    1     2          N Coefficients are stored in reverse order: coef[0] = C  , ..., coef[N] = C  .            N                   0 
        In the interest of speed, there are no checks for out of bounds arithmetic.
        Parameters:
        x - argument to the polynomial.
        coef - the coefficients of the polynomial.
        N - the degree of the polynomial.
        Throws:
        ArithmeticException

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