How to mix Complex and SymbolicExpression? about mathnet-symbolics HOT 5 OPEN

let formatComplexLambda ...
      let constant = function
            | I -> Some (Expression.Constant (complex 0.0 1.0) :> Expression)

      Func<Complex, Complex> f = Parse("z * z + j/2").CompileComplex("z");
      Complex c = 1.0 / 2.0 - i / 3.0;

using System;
using System.Numerics;

using static System.Console;
using static System.Numerics.Complex;
using static MathNet.Symbolics.SymbolicExpression;


    class Program
    {
        static readonly Complex i = ImaginaryOne;

        static void Main()
        {
            var z = Variable("z");
            Func<Complex, Complex, Complex> f = Parse("z * i").CompileComplex(nameof(z), "i");

            Complex c = 1 / 2.0 - i / 3;
            WriteLine(f(c, i));
        }
    }

using System;
using System.Numerics;

using static System.Console;
using static System.Numerics.Complex;
using static MathNet.Symbolics.SymbolicExpression;


    class Program
    {
        static readonly Complex i = ImaginaryOne;

        static void Main()
        {
            var z = Variable("z");
            Func<Complex, Complex, Complex> f = Parse("z * i").CompileComplex(nameof(z), nameof(i));

            Complex c = 1 / 2.0 - i / 3;
            WriteLine(f(c, i));
        }
    }