[Python-ideas] Re: Make 10**400 / 1e200 work?

The non-associativity isn't just signed zeros: regular floating point addition and multiplication of positive numbers is not associative from math import nextafter x = nextafter(1.0, 2.0) print((x+x)+1.0, x+(x+1.0)) x2 = nextafter(1.0, 0.0) print((x*x2)*x2, x*(x2*x2))