Re: [boost] Boost Digest, Vol 1227, Issue 2

From: David Abrahams (dave_at_[hidden])
Date: 2005-09-27 07:09:45

David Abrahams <dave_at_[hidden]> writes:

> "Paul A Bristow" <pbristow_at_[hidden]> writes:
>
>> The expense is the brain power required to produce a high quality
>> implementation which proved more than expected for TR1 functions.
>>
>> IMO part of the problem is the unrealistic expectation of the
>> Standards WGs for an accuracy similar to that for most of the other
>> functions like sin, cos for which it IS feasible, albeit with care
>> and skill, to get within a bit (ulp) or few.
>>
>> For some of the other functions, getting within a few decimal places
>> is challenging.
>
> What leads you to believe there is such an unrealistic expectation?  I
> don't see any mention of accuracy in the proposed TR
> (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf for
> reference).

Never mind; obviously I should read entire postings before replying to
them.

Sorry :(
-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com