C# IRG 2022

 //C# IRG 2022 By BOUSSAID Mustafa 2022
        public static double IRG2022New(int TypeIRG, double Soumis)
        {
            //Variables
            const int T00 = 20000;
            const int T01 = 4600;
            const int T02 = 10800;
            const int T03 = 24000;
            const int T04 = 52800;
            double Irg = 0;

            double P = Math.Floor(Soumis / 10) * 10;
            if (Soumis <= 30009)
            {
                Irg = 0;
            }
            else
            {
                if (Soumis >= 30010 && Soumis <= 40000) { Irg = (P - T00) * 0.23; }
                else if (Soumis > 40000 && Soumis <= 80000) { Irg = (P - 40000) * 0.27 + T01; }
                else if (Soumis > 80001 && Soumis <= 160000) { Irg = (P - 80000) * 0.30 + T01 + T02; }
                else if (Soumis > 160001 && Soumis <= 320000) { Irg = (P - 160000) * 0.33 + T01 + T02 + T03; }
                else if (Soumis > 320000) { Irg = (P - 320000) * 0.35  + T01 + T02 + T03 + T04; }

                double Abat = Irg * 0.4;
                if (Abat < 1000) { Abat = 1000; }
                else if (Abat > 1500) { Abat = 1500; }
                Irg -= Abat;

                // 1= Normal 2= Handicape
                switch (TypeIRG)
                {
                    case 1: //---->Normal
                        if (Soumis < 35000) { Irg = (Irg * 137d / 51d) - (27925d / 8d); }
                        break;
                    case 2: //---->Handicape
                        if (Soumis < 42500) { Irg = (Irg * 93d / 61d) - (81213d / 41d); }
                        break;
                    default:
                        //Irg = Math.Round(Irg, 1);
                        break;
                }
                Irg = Math.Round(Irg, 1);
            }
            return Irg;
        }