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- Subject: Re: At the edge of LNUM patch
- From: Doug Currie <doug.currie@...>
- Date: Tue, 25 Mar 2008 17:27:24 -0400
On Tuesday, March 25, 2008 Mark Hamburg wrote:
> on 3/25/08 1:50 PM, Asko Kauppi at email@example.com wrote:
>> Mark Hamburg kirjoitti 25.3.2008 kello 18:36:
>>> The patch should kick out of the integer realm at the boundary of
>>> floating-point precision not at the boundary of integer precision.
>>> calculating 2 ^ 63 should result in the value being stored as a
>>> double even
>>> though it could fit into a 64-bit integer.
>> But this is exactly what it does. The "integer realm" is signed
>> integers, -2^63 .. +2^63-1 with int64 mode. 2^63 does not fit into a
>> signed 64-bit integer.
> Sorry. I wrote too fast. My point was that even 2 ^ 63 - 1 should be stored
> as a double.
Yes, storing any number outside the range -2 ^ 53 to 2 ^ 53 as a
double would avoid the problem.
Londonderry, NH, USA