How to access external DLL's static methods that incorporate output parameters in SQL Server

Question

I know how to load a CLR DLL in SQL Server and access to its static methods which does not incorporate output parameters in their method signatures but what I cannot realize is how I can use methods which have output parameters.

For example it is strightforward to access Math.dll 's factorial method in SQL server like this:

CREATE ASSEMBLY MathAsm FROM 'C:\Programming\c#\SQLCLRIntegrationExample\assemblies\Math.dll'
    WITH PERMISSION_SET = EXTERNAL_ACCESS;
Go

CREATE FUNCTION Factorial(@x FLOAT)
    RETURNS FLOAT
    EXTERNAL NAME MathAsm.Math.Factorial;
Go

But what if method's signature would be like:

public static int GetInfo(int[] inputParams, out int[] outputParams)