Is buying foreign currency with credit card viewed as a purchase or a cash advance?

I suspect it's a purchase but don't know for sure. If it's a purchase then I guess one pays CC the exchange rate and the FX charge (1.75% methinks) and then have up to 56 days interest free credit . . if it's a cash advance then one probably additionally gets hit by a cash advance fee and interest from day 1. Anyone know for sure which it is?

its a cash advance so you get hit with 1.5% of the amount or a minimum, thats with boi.

noah