Sig, Fair enough :) The most recent thing I recall on NativeBoost is Stef asking for what I assume must be a Mac plugin; I thought Linux would be left out too, but it appears not, though it is not in my current vm. Beyond some list traffic, I found this:
http://code.google.com/p/nativeboost/wiki/NativeBoost Is there other documentation somewhere? Build instructions? You have a block copy, which is good. What about indexing, such as getting floats or doubles out of external memory? I am very comfortable adding functions to a library for integer and float/double calculations on "large" arrays and calling them via FFI; plugins are another story. Are there examples to follow? Bill ________________________________________ From: [email protected] [[email protected]] On Behalf Of Igor Stasenko [[email protected]] Sent: Wednesday, September 22, 2010 6:20 PM To: [email protected] Subject: Re: [Pharo-project] DoubleArray On 23 September 2010 00:37, Schwab,Wilhelm K <[email protected]> wrote: > Henry, > > I have been getting away with #doubleAt: and #doubleAt:put:, and otherwise > doing pretty much what you said, though I just use a byte array to hold the > data. It seems to work; for FFI, I end up passing void pointers instead of > double pointers, which I don't like doing. > > Your point about using ordinary arrays makes sense to a point, though even > w/o external interfacing, there is still a use for DoubleArray just as there > is a use for String vs. an array of characters. > The main reason, why they are not here, that VM needs an additional set of primitives, which working with them. <sellsman hat on> I can only say that with NativeBoost, you could be able to implement it quite easily in image and ship it in image, without a need to change VM or use external plugin. <sellsman hat off> > Bill > > > ________________________________________ > From: [email protected] > [[email protected]] On Behalf Of Henrik Sperre > Johansen [[email protected]] > Sent: Wednesday, September 22, 2010 5:23 PM > To: [email protected] > Subject: Re: [Pharo-project] DoubleArray > > On 22.09.2010 23:09, Schwab,Wilhelm K wrote: >> Squeak, deliberately, does not have a double array class. Is that because >> there is some horrible reason it can't work, or because it won't work on >> certain platforms? > If the goal is to pass it as a parameter to an external function, one > way would be to subclass WordArray, storing(and reading) each Float in > two elements, and have the endianness decided by Smalltalk endianness. > Probably want a startUp method for the class to swap instances > endianness if the platform has changed as well. >> Put another way, should we add such a class, if only via an external heap or >> whatever would be needed to make it reliable? >> >> Bill > More likely because no one has actually had a need for one. > It's definitely not _needed_ in base, where normal arrays of floats > would do the same job just as well, if not better. > IMHO, if someone makes one, it so should probably be part of a package > related to external interfacing. > > Cheers, > Henry > > > _______________________________________________ > Pharo-project mailing list > [email protected] > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > [email protected] > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > -- Best regards, Igor Stasenko AKA sig. _______________________________________________ Pharo-project mailing list [email protected] http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project _______________________________________________ Pharo-project mailing list [email protected] http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
