Is there a way to determine the calculation setting of Excel from within a
macro?

I write a lot of macros that turn off calculation so they'll run faster,
then turn it back on at the end.

Now I'm dealing with workbooks where automatic calculation is already turned
off, and for those I don't WANT it turned on at the end.

Is there a way to tell what the setting is so that I can set it back the way
it was when the macro's done?