[Gretl-devel] is there an inarray function?

Hello, I need a function the tests if variable is in an array (sorry for the poor wording of this sentence). What I mean by this is a function that compares each element of an array to a variable and returns 0 if no elements of the array are equal and the position in the array of the first instance of equality. So here are my question: 1. Dose such a function exist? (I haven't found one, but I thought I should ask) 2. If not, coding it up is no problem, but I need a way to check the data type of variable. Is there such a command? 3. Is there a way, other than using a bundle, to pass a variable of unknown data type to a function? Thanks, Logan