Raymond Hettinger <[email protected]> added the comment:
Here's a pairwise variant:
def prod(seq):
stack = []
exp = 0
for i, x in enumerate(seq, start=1):
m, e = frexp(x)
exp += e
stack += [m]
while not i&1:
i >>= 1
x, y = stack[-2:]
stack[-2:] = [x * y]
total = 1.0
while stack:
total *= stack.pop()
return ldexp(total, exp)
----------
_______________________________________
Python tracker <[email protected]>
<https://bugs.python.org/issue41458>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
