Hi Florian, The restriction Edward described is gone: here's an unboxed vector of ForwardDouble: https://gist.github.com/aavogt/6bee72717148123a187c. But I don't think there's been any work to make hmatrix's Field class have a ForwardDouble instance. I don't know of a ReverseDouble either. Regards, Adam On Mon, May 11, 2015 at 6:24 AM, Florian Hofmann < fhofmann@techfak.uni-bielefeld.de> wrote:
In [1](this) email thread Edward Kmett and Dominic Steinitz discuss the state of interoperability of `ad` and `hmatric` (or `repa`) with Edward hinting that the 4.0 line of `ad` might improve on the situation.
Could someone elaborate on the state of affairs two years later?
Florian
[1]: https://mail.haskell.org/pipermail/haskell-cafe/2013-April/107561.html
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