using System;
using System.Runtime.InteropServices;

namespace FFTTest
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Start");
            var descriptorHandle = new IntPtr();
            DftiCreateDescriptor(ref descriptorHandle, DFTI_DOUBLE, DFTI_COMPLEX, 1, 100);
            Console.WriteLine("Complete");
            Console.ReadLine();
        }

        [DllImport("libmkl_rt", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true, SetLastError = false)]
        private static extern int DftiCreateDescriptor(ref IntPtr desc, int precision, int domain, int dimention, int length);

        private static int DFTI_DOUBLE = 36;
        private static int DFTI_COMPLEX = 32;
    }
}