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On Sat, 5 Aug 2017 02:00 am, Ian Kelly wrote: > On Fri, Aug 4, 2017 at 9:47 AM, Chris Angelico <rosuav at gmail.com> wrote: >> On Sat, Aug 5, 2017 at 1:44 AM, Chris Angelico <rosuav at gmail.com> wrote: >>> That gave me this result almost instantaneously: >>> >>> 4503599761588224 >>> >>> which has been rounded up instead of down. I don't know if that counts >>> as sufficiently wrong? [...] > Your example demonstrates that the "2**53 < M" assumption was wrong, > which is interesting. It sure is. You're right, of course, I hadn't noticed that Chris' M was approximately half 2**53. -- Steve ?Cheer up,? they said, ?things could be worse.? So I cheered up, and sure enough, things got worse.

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