XSpect.Yacq.Expressions.YacqExpression.ConvertNumericTypeForAlithmetics C# (CSharp) Method

        internal static Type ConvertNumericTypeForAlithmetics(Type type, Boolean needsSigned)
        {
            var isNullable = Nullable.GetUnderlyingType(type) != null;
            switch (Type.GetTypeCode(isNullable ? Nullable.GetUnderlyingType(type) : type))
            {
                case TypeCode.Char:
                case TypeCode.SByte:
                case TypeCode.Byte:
                case TypeCode.Int16:
                case TypeCode.UInt16:
                case TypeCode.Int32:
                    return isNullable
                        ? typeof(Nullable<Int32>)
                        : typeof(Int32);
                case TypeCode.UInt32:
                    return needsSigned
                        ? isNullable
                              ? typeof(Nullable<Int64>)
                              : typeof(Int64)
                        : isNullable
                              ? typeof(Nullable<UInt32>)
                              : typeof(UInt32);
                case TypeCode.Int64:
                    return isNullable
                        ? typeof(Nullable<Int64>)
                        : typeof(Int64);
                case TypeCode.UInt64:
                    return needsSigned
                        ? null
                        : isNullable
                              ? typeof(Nullable<UInt64>)
                              : typeof(UInt64);
                default:
                    return null;
            }
        }