TR1 Special Math

[Ed Smith-Rowland]

On 10/24/2015 11:38 PM, Jonathan Wakely wrote:
> On 8 May 2015 at 15:05, Ed Smith-Rowland <3dw4rd@verizon.net> wrote:
>> On 05/07/2015 12:06 PM, Jonathan Wakely wrote:
>>> Hi Ed,
>>>
>>> The C++ committee is considering the
>>> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4437.pdf
>>> proposal to make C++17 include the contents of ISO 29124:2010 (the
>>> special math functions from TR1 that went into a separate standard,
>>> not into C++11).
>>>
>>> What is the status of our TR1 implementation? Is it complete? Good
>>> enough quality to move out of the tr1 sub-dir?
>>>
>>> Even if N4437 isn't accepted for C++17 we could move things around to
>>> turn the TR1 code into an iso29124 implementation, do you think that
>>> would make sense?
>>>
>> That would make absolute sense.
>> I actually have a tree where I've done that.
>> All the functions are in there (29124 removed the hypergeometric functions.
>> I'd like to keep those as extensions.
>> I have some bugfixes also.
>>
>> I have a better version of the Carlson elliptic functions (which are used in
>> the 29124 elliptic functions).
>>
>> Ed
>>
> Hi Ed, Florian,
>
> Here's a patch to re-use the TR1 math functions to implement IS 29124,
> what do you think of this approach? Ed, were you just going to copy
> the files and have duplicated code?
>
> We should probably uglify the names of the hypergeometric functions if
> they are not in the final standard.
>
> This doesn't include Florian's patch, which should be applied.
>
> (I want to get this done before stage 1 ends in a couple of weeks, so
> am posting this for review now, but I'll be unavailable for the next
> week or two and might not be able to actually commit anything until
> stage 3).
Hi all!

I am actually very aware of the stage 1 deadline and am working furiously!

This patch adds the hypergeometric and confluent hypergeometric 
functions that were actually stricken fromTR29124.
I actually had a mind to add those back especially since the confluent 
one is actually pretty stable in it's realm and is used in some 
statistics tests.
I expect that some people have ventures to use both and so TR29129 would 
not be a full replacement for TR1 without them.

I intend to post within the next few days.  I have to realize that some 
of my hopes and dreams would be better done with these in tree! ;-)

Thank you for lighting a fire Jonathan!

Ed