Re: Mister Math is wanted!
Unfortunate overlap in functionality is unfortunate. $ git grep -i kahan std/algorithm/iteration.d:$(D sum) uses the $(WEB en.wikipedia.org/wiki/Kahan_summation, std/algorithm/iteration.d:Kahan summation) algorithm.) std/algorithm/iteration.d:return sumKahan!E(seed, r); std/algorithm/iteration.d:// Kahan algo http://en.wikipedia.org/wiki/Kahan_summation_algorithm std/algorithm/iteration.d:private auto sumKahan(Result, R)(Result result, R r) $ _ Andrei Would one of the following solutions be fortunate ? I. Use alias of fsum!(Summation. Appropriate) for floating version of std.algorithm.sum. Appropriate algorithm performs D Pairwise summation for random access ranges. Otherwise performs D KBN summation of floating point and complex numbers and Kahan summation of user defined types. or II. Move this submodule to std.algorithm.iteration. or III. Remove Kahan (including KBN and KB2) and Pairwise algorithms from fsum, and use only Precise algorithm for std.numeric.
Re: Mister Math is wanted!
On Friday, 27 February 2015 at 09:27:49 UTC, Ilya Yaroshenko wrote: Unfortunate overlap in functionality is unfortunate. $ git grep -i kahan std/algorithm/iteration.d:$(D sum) uses the $(WEB en.wikipedia.org/wiki/Kahan_summation, std/algorithm/iteration.d:Kahan summation) algorithm.) std/algorithm/iteration.d:return sumKahan!E(seed, r); std/algorithm/iteration.d:// Kahan algo http://en.wikipedia.org/wiki/Kahan_summation_algorithm std/algorithm/iteration.d:private auto sumKahan(Result, R)(Result result, R r) $ _ Andrei Would one of the following solutions be fortunate ? I. Use alias of fsum!(Summation. Appropriate) for floating version of std.algorithm.sum. Appropriate algorithm performs D Pairwise summation for random access ranges. Otherwise performs D KBN summation of floating point and complex numbers and Kahan summation of user defined types. or II. Move this submodule to std.algorithm.iteration. or III. Remove Kahan (including KBN and KB2) and Pairwise algorithms from fsum, and use only Precise algorithm for std.numeric. Probably, I have found good solution. Summator struct can be represented in std.numeric and std.algorithm.sum can be extended by the new functionality. So there will be no overlap in functionality.
Mister Math is wanted!
Hello all! Python's fsum is ready for D : https://github.com/D-Programming-Language/phobos/pull/2991 Destroy!
Re: Mister Math is wanted!
On 2/26/15 5:34 AM, Ilya Yaroshenko wrote: Hello all! Python's fsum is ready for D : https://github.com/D-Programming-Language/phobos/pull/2991 Destroy! Unfortunate overlap in functionality is unfortunate. $ git grep -i kahan std/algorithm/iteration.d:$(D sum) uses the $(WEB en.wikipedia.org/wiki/Kahan_summation, std/algorithm/iteration.d:Kahan summation) algorithm.) std/algorithm/iteration.d:return sumKahan!E(seed, r); std/algorithm/iteration.d:// Kahan algo http://en.wikipedia.org/wiki/Kahan_summation_algorithm std/algorithm/iteration.d:private auto sumKahan(Result, R)(Result result, R r) $ _ Andrei
