18.07.2014 22:13, Chris Barker kirjoitti: [clip] > but an appropriate rtol would work there too. If only zero testing is > needed, then atol=0 makes sense as a default. (or maybe atol=eps) There's plenty of room below eps, but finfo(float).tiny ~ 3e-308 (or some big multiple) is also reasonable in the scale-freeness sense.