CSPspEmu.Core.Cpu.Assembler.MipsAssembler.ParseVfprRotate C# (CSharp) Method

        public static uint ParseVfprRotate(string Format)
        {
            //return 0;
            var Parts = Format.Trim('[', ']').Split(',').Select(Item => Item.Trim()).ToArray();
            uint imm5 = 0;
            int CosIndex = -1;
            int SinIndex = -1;
            bool NegatedSin = false;
            for (int Index = 0; Index < Parts.Length; Index++)
            {
                var Part = Parts[Index];
                switch (Part)
                {
                    case "c":
                        if (CosIndex != -1) throw (new Exception("Can't put cosine twice"));
                        CosIndex = Index;
                        break;
                    case "-s":
                    case "s":
                        if (SinIndex != -1) throw (new Exception("Can't put sine twice"));
                        SinIndex = Index;
                        if (Part == "-s") NegatedSin = true;
                        break;
                    case "0":
                        break;
                    default:
                        throw(new NotImplementedException(Part));
                }
            }

            if (CosIndex == -1) throw(new Exception("Didn't set cosine"));
            if (SinIndex == -1) throw (new Exception("Didn't set sine"));

            BitUtils.Insert(ref imm5, 0, 2, (uint)CosIndex);
            BitUtils.Insert(ref imm5, 2, 2, (uint)SinIndex);
            BitUtils.Insert(ref imm5, 4, 1, NegatedSin ? 1U : 0U);
            //Console.WriteLine(Format);
            //throw (new NotImplementedException("ParseVfprRotate"));
            return imm5;
        }