[Kaliber]

No, there is no function (btw typedef is an operator).
So you have to do sth like this:

PHP Code:

new test:a;
//for functions where u allow only a specific tag:
func(test:x) //If you give here a variable with another tag... = warning
{
    
}
//You can also do
func(x)
{
    new tmp = tagof (x);
    if(tmp == tagof (test:))
    {
        //x is from type test
    }
    else
    {
        //Here its not
    }
}