Thread: changing pin orders in a #define varaible?

Hi,
Im trying to write a simple bit of C to multiplex some 7seg displays. For practical purposes on the layout it made sense to muddle up the order of some pins (ie abcdefg corresponds to PA0,PA1,PA4,PB0 etc..)

I was just wondering how you might #define a variable, say UNITS, that has these pins rearranged in an order you want! Sort of like a virtual PORT...

Thanks