<%@ ServiceHost Language="C#" Service="SimpleWCF.MathService" %>

using System.ServiceModel;

namespace SimpleWCF.MathService
{
    [ServiceContract]
    public interface ISimpleWCF
    {
        [OperationContract]
        double Add(double operand1, double operand2);
        [OperationContract]
        double Substruct(double operand1, double operand2);
        [OperationContract]
        double Multiply(double operand1, double operand2);
        [OperationContract]
        double Division(double operand1, double operand2);
    }

    public class MathService : ISimpleWCF
    {
        public double Add(double operand1, double operand2)
        {
            return operand1 + operand2;
        }
        public double Substruct(double operand1, double operand2)
        {
            return operand1 - operand2;
        }
        public double Multiply(double operand1, double operand2)
        {
            return operand1 * operand2;
        }
        public double Division(double operand1, double operand2)
        {
            return (operand2 == 0.0) ? Double.NaN : operand1 / operand2;
        }
    }
}

namespace SimpleWCF.MathService

namespace SimpleWCF