

Line 1: 
Line 1: 
−  == Version 0 ==
 
   
−  === Version 0.2 ===
 
− 
 
−  ==== Version 0.2.0 ====
 
− 
 
−  * <hask>Data.Cross</hask>: generalized cross products
 
−  * <hask>distribD</hask> now takes only one function argument and ties its own knot.
 
−  * Renamed <hask>distribD</hask> to <hask>distrib</hask>.
 
−  * Now there are two power series modules: <hask>Maclaurin</hask> (was <hask>Derivative</hask>) and <hask>Horner</hask>. Now <hask>Derivative</hask> is an indirection to one or the other, for testing. See Doug McIlroy's paper "The Music of Streams".
 
−  * Factored <hask>Data.AdditiveGroup</hask> out of <hask>Data.VectorSpace</hask>
 
−  * <hask>LinearMap</hask> has a new data representation for linear maps, to replace the simple function representation. Used in <hask>Data.Maclaurin</hask>.
 
−  * <hask>Data.Derivative</hask> is now more than an indirection module. It rewraps a power series type to provide different instances for <hask>VectorSpace</hask> and <hask>InnerSpace</hask>.
 
−  * Added support for OpenGL vector types. In ghc6.8.2, I get an error if a <hask>LMapDom</hask> instance is compiled in any module except for <hask>Data.LinearMap</hask>. Until this code is removed, the <code>vectorspace</code> package depends on <code>OpenGL</code>.
 
−  * Tests in <code>FieldTrip</code> show a dramatic slowdown, in contrast to my intended speedup.
 
−  * Andy Gill found at least one cause for the slowdown, which has been fixed. I think we have a long way to go. There appear to be lots of redundant dictionary construction.
 
−  * <hask>Data.Horner</hask> removed temporarily, until resync'd with <hask>Data.Maclaurin</hask>.
 
− 
 
−  ==== Version 0.1.3 ====
 
− 
 
−  * <hask>InnerSpace</hask> instance in <hask>Data.Derivative</hask>
 
− 
 
−  ==== Version 0.1.2 ====
 
− 
 
−  * Renamed <hask>dId</hask> to <hask>idD</hask> and added <hask>fstD</hask> and <hask>sndD</hask>.
 
−  * Renamed <hask>bilinearD</hask> to <hask>distribD</hask>.
 
− 
 
−  ==== Version 0.1.1 ====
 
− 
 
−  * Added some missing haddock docs
 
−  * Added a <hask>Complex</hask> instance of <hask>VectorSpace</hask>
 
− 
 
−  ==== Version 0.1 ====
 
− 
 
−  * Changed representation of the derivative part of <hask>a :> b</hask>. Was <hask>a :> (a :* b)</hask>. Now <hask>a :* (a :> b)</hask>, which can also be written <hask>a :~> b</hask> (leaving the derivative's linearity implicit). The type <hask>a :~> b</hask> means infinitely differentiable functions from <hask>a</hask> to <hask>b</hask>.
 
− 
 
−  === Version 0.0.1 ===
 
− 
 
−  * Changed repo location from darcs.haskell.org to http://code.haskell.org/vectorspace.
 
− 
 
−  * '''Oops'''  there's a serious mistake in the derivatives code in versions up through 0.0.1. I'm working on a solution. [Fixed in 0.1.]
 