example-EllipticFunction.cs

using System;
using NETGeographicLib;

namespace example_EllipticFunction
{
    class Program
    {
        static void Main(string[] args)
        {
            try {
                EllipticFunction ell = new EllipticFunction(0.1, 1.0);  // parameter m = 0.1
                // See Abramowitz and Stegun, table 17.1
                Console.WriteLine( String.Format( "{0} {1}", ell.K(), ell.E()));
                double phi = 20 * Math.Acos(-1.0) / 180.0;;
                // See Abramowitz and Stegun, table 17.6 with
                // alpha = asin(sqrt(m)) = 18.43 deg and phi = 20 deg
                Console.WriteLine( String.Format("{0} {1}", ell.E(phi),
                        ell.E(Math.Sin(phi), Math.Cos(phi),
                            Math.Sqrt(1 - ell.k2 * Math.Sin(phi) * Math.Sin(phi))) ) );
                // See Carlson 1995, Sec 3.
                Console.WriteLine(String.Format("RF(1,2,0)      = {0}", EllipticFunction.RF(1,2)));
                Console.WriteLine(String.Format("RF(2,3,4)      = {0}", EllipticFunction.RF(2,3,4)));
                Console.WriteLine(String.Format("RC(0,1/4)      = {0}", EllipticFunction.RC(0,0.25)));
                Console.WriteLine(String.Format("RC(9/4,2)      = {0}", EllipticFunction.RC(2.25,2)));
                Console.WriteLine(String.Format("RC(1/4,-2)     = {0}", EllipticFunction.RC(0.25,-2)));
                Console.WriteLine(String.Format("RJ(0,1,2,3)    = {0}", EllipticFunction.RJ(0,1,2,3)));
                Console.WriteLine(String.Format("RJ(2,3,4,5)    = {0}", EllipticFunction.RJ(2,3,4,5)));
                Console.WriteLine(String.Format("RD(0,2,1)      = {0}", EllipticFunction.RD(0,2,1)));
                Console.WriteLine(String.Format("RD(2,3,4)      = {0}", EllipticFunction.RD(2,3,4)));
                Console.WriteLine(String.Format("RG(0,16,16)    = {0}", EllipticFunction.RG(16,16)));
                Console.WriteLine(String.Format("RG(2,3,4)      = {0}", EllipticFunction.RG(2,3,4)));
                Console.WriteLine(String.Format("RG(0,0.0796,4) = {0}", EllipticFunction.RG(0.0796, 4)));
            }
            catch (GeographicErr e) {
                Console.WriteLine( String.Format( "Caught exception: {0}", e.Message ) );
            }
        }
    }
}