21 Mar
2018
21 Mar
'18
10:53 p.m.
On Wed, Mar 21, 2018 at 8:49 PM, David Mertz <mertz@gnosis.cx> wrote:
For example, this can be true (even without reaching inf):
x.is_integer() True (math.sqrt(x**2)).is_integer() False
If you have a moment to share it, I'd be interested to know what value of `x` you used to achieve this, and what system you were on. This can't happen under IEEE 754 arithmetic. -- Mark