Use of C99 extra long double math functions after r236148
Warner Losh
imp at bsdimp.com
Tue Jul 10 16:14:26 UTC 2012
On Jul 10, 2012, at 9:11 AM, David Schultz wrote:
> On Tue, Jul 10, 2012, Rainer Hurling wrote:
>> On 10.07.2012 16:02 (UTC+2), Warner Losh wrote:
>>>
>>> On Jul 10, 2012, at 3:10 AM, Rainer Hurling wrote:
>>>> As far as I understand from discussions on R mailing list
>>>> (r-devel at r-project.org), they plan to reduce the emulation and/or
>>>> workaround of long and complex math functions for FreeBSD and other
>>>> systems with their next releases of R devel. So we could really need some
>>>> progress with our C99 conform math functions ;-)
>>>
>>> Not having R would be a bit pain in my backside. That's one of the
>>> practical considerations that I was talking about. It is very real, and
>>> if I have to, I'll commit the #define junk I railed against to get it
>>> back. Please, let's get some progress. I have some time to help.
>>
>> Yes, thank you Warner, that is also my problem. As I wrote some weeks
>> ago (05/28/2012) when starting this thread, I am using FreeBSD as a
>> scientific desktop because of its good scaling properties. For some
>> years now, FreeBSD fits all our needs with R, SAGA GIS, PostgreSQL and
>> some more.
>>
>> If I would not be able to run upcoming versions of R on FreeBSD any
>> more, that would be really, really hard :-(
>
> Do you have a list of the essential functions here? There are 17 long
> double functions and some complex functions missing, but only a
> handful of those are of general interest. The reason I ask is that if
> R is just looking for a few missing functions that are already mostly
> implemented, then the best solution is probably to finish that work.
> But if it's expecting us to have something arcane like long double
> Bessel functions of the first kind, then we need to pursue a workaround
> in the short term.
I'll get a list, but they are things like long long double exp and ln. I don't think they were the Bessel functions.
Warner
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