APL, i haven't thought about that in 15 years. I think it was (quad)CT for comparison tolerance, at least in IBM APL.
Alex Martelli wrote: > Tom Anderson <[EMAIL PROTECTED]> wrote: > ... > > What would approximate FP equality even mean? How approximate? > > In APL, it meant "to within [a certain quad-global whose name I don't > recall] in terms of relative distance", i.e., if I recall correctly, > "a=b" meant something like "abs(a-b)/(abs(a)+abs(b)) < quadEpsilon" or > thereabouts. Not too different from Numeric.allclose, except the latter > is "richer" (it takes both absolute and relative "epsilons", and also > implies an "and-reduce" if the objects being compared are arrays). > > > Alex -- http://mail.python.org/mailman/listinfo/python-list
