LowerIncompleteGamma.cs

using System;
using System.Numerics;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Model;
using Waher.Script.Objects;
using Waher.Script.Units;
 
namespace Waher.Script.Statistics.Functions.Analytic
{
    public class LowerIncompleteGamma : FunctionTwoScalarVariables
    {
        public LowerIncompleteGamma(ScriptNode Argument1, ScriptNode Argument2, 
            int Start, int Length, Expression Expression)
            : base(Argument1, Argument2, Start, Length, Expression)
        {
        }
 
        public override string FunctionName => "γ";
 
        public override string[] Aliases => new string[] { "lgamma" };
 
        public override string[] DefaultArgumentNames => new string[] { "a", "z" };
 
        public override IElement EvaluateScalar(double Argument1, double Argument2, Variables Variables)
        {
            return new DoubleNumber(StatMath.γ(Argument1, Argument2));
        }
 
        public override IElement EvaluateScalar(Complex Argument1, Complex Argument2, Variables Variables)
        {
            return new ComplexNumber(StatMath.γ(Argument1, Argument2));
        }
    }
}