On 12/09/2012 15:14, P Purkayastha wrote:
Can anyone point out what is wrong with this comparison:
sage: 0.2 + 0.1 == 0.3
False
It seems baffling that something as simple as this returns False.
Its a fairly common problem with doing arithmetic with floatingpoint
numbers as they are only storred to some finite precision and the binary
expansion could be infinite. In particular note that 0.2+0.1-0.3
returns something very small but non-zero.
Alastair
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