Ironically (to me at least, because it's a construct I use -far- more rarely than while), this actually seems like a case where a C-style for loop might actuall

Ironically (to me at least, because it's a construct I use -far- more rarely than while), this actually seems like a case where a C-style for loop might actually be nicer: for (my $scale = 5; $scale > 0.1; $scale /= 2) { do_stuff($scale); }