Terry Reedy wrote: > On 9/24/2011 9:53 AM, Steven D'Aprano wrote: [...] >>>>> [0.0 + i*width for i in range(8)] >> [0.0, 0.3, 0.6, 0.8999999999999999, 1.2, 1.5, 1.7999999999999998, 2.1] >> >> The 4th and 7th values have rounding errors, the rest are exact > > No they are not. Their errors are just smaller and not visible with 16 > digits.
Pardon. I meant that they were as close to exact as is possible in binary floats. With the exception of 0.8999... and 1.7999... I don't believe any other float can be closer to the exact value. I did mention that "If the exact value isn't representable as a float, I'm okay with returning the nearest possible float." :) -- Steven -- http://mail.python.org/mailman/listinfo/python-list
