Re: [Maxima-discuss] e, pi, gamma, log(2)

[Jan H. M. <jan...@ma...>]

Maybe I overlooked that: What was the "old" way maxima computed e and pi? 
Is there a possibility to look at these codes for non developers?
bw
Jan

> Am 20.09.2014 um 22:53 schrieb Raymond Toy <toy...@gm...>:
> 
> 
> 
>> On Sat, Sep 20, 2014 at 2:58 AM, Volker van Nek <vol...@gm...> wrote:
>> Am 19.09.2014 20:35, schrieb Raymond Toy:
>> >>>>>> "Volker" == Volker van Nek <vol...@gm...> writes:
>> >
>> >     Volker> [ I also implemented exp(x), log(x), sin(x) and friends for bigfloat x.
>> >     Volker> In contrast to fpe1, .. these implementions are still some kind of raw
>> >     Volker> material and need more error analysis. And of course it's a lot more
>> >     Volker> difficult to merge them into Maxima. My idea is to put them into
>> >     Volker> /share/contrib for now. ]
>> >
>> > Is there something wrong with the current implementations of these
>> > functions?
>> >
>> > Ray
>> >
>> 
>> Ray, as I wrote in my last sentence I do not feel any pressure to
>> replace the current functions in src.
>> 
>> After coding the binary splitting versions for the constants I was
>> curious to check out the other algorithms described in this paper.
>> 
>> I thought it is worth to share the implementation of these algorithms.
>> Perhaps someone can use them or is simply interested to study them.
>> 
>> The binary splitting variants are very fast and in some far future these
>> implementations might be worth to consider. At the moment I don't want
>> to risk breaking anything in src for the sake of speed advantages.
> 
> ​Ok. I haven't looked at your code yet, but if they're significantly faster and not (much) less accurate, we should consider adding these.  I'm sure we can come up with a nice set of tests to cover the code to show that it's good.​ 
>> 
>> Volker
>> 
>> >
>> > ------------------------------------------------------------------------------
>> > Slashdot TV.  Video for Nerds.  Stuff that Matters.
>> > http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk
>> > _______________________________________________
>> > Maxima-discuss mailing list
>> > Max...@li...
>> > https://lists.sourceforge.net/lists/listinfo/maxima-discuss
>> >
>> 
>> 
>> ------------------------------------------------------------------------------
>> Slashdot TV.  Video for Nerds.  Stuff that Matters.
>> http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk
>> _______________________________________________
>> Maxima-discuss mailing list
>> Max...@li...
>> https://lists.sourceforge.net/lists/listinfo/maxima-discuss
> 
> 
> 
> -- 
> Ray
> ------------------------------------------------------------------------------
> Slashdot TV.  Video for Nerds.  Stuff that Matters.
> http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk
> _______________________________________________
> Maxima-discuss mailing list
> Max...@li...
> https://lists.sourceforge.net/lists/listinfo/maxima-discuss