Terry Reedy <tjre...@udel.edu> writes: > On 11/27/2010 5:55 PM, kj wrote: > >> Therefore, to implement this multiplication operation I need to >> have a way to verify that the float tuples C and D are "equal". > > I might try the average relative difference: > sum(abs((i-j)/(i+j)) for i,j in zip(C,D))/n # assuming lengths constant
That'll throw an exception if i == -j. You could replace (i+j) with math.hypot(i, j) or abs(i)+abs(j) but it will still fail when i == j == 0. -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
