Re: Use of C99 extra long double math functions after r236148

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