IRC channel logs

<davexunit>best data structure for vector math operations (add, mul, scale, normalize, magnitude)? vectors #(1 2 3) ? bytevectors? plain lists?

<fbs>davexunit: youre doing the opengl thing right?

<davexunit>yes

<davexunit>but this is more of the not-necessarily opengl related stuff.

<davexunit>lists are probably the easiest thing to work with

<fbs>might be interesting to just test a few in a big benchmark and see what works best

<davexunit>yeah

<davexunit>that's true

<fbs>writing a few generic math operations shouldnt be that hard

<fbs>if you want fast fast you probably want to make use of of simd stuff like sse https://en.wikipedia.org/wiki/SIMD

<davexunit>thanks

<davexunit>I probably don't need *that* fast, but vector math is such a common thing for games that I'd like to provide procedures that aren't totally wasteful.

<fbs>do you have gpu accel?

<davexunit>yes, but I don't know if I want to be using the gpu for this stuff.

<davexunit>I might stick to plain lists, since most operations can be implemented with simple maps and reduces.

<davexunit>I have an after-gc hook that relies on a procedure that uses the guile FFI. unfortunately, when this hook is called when guile is exiting, the program crashes because the shared library file has aleady been unloaded.

<davexunit>what would be the best course of action? just catch the exception and ignore it?

<tupi>sunday is a good day for stupid quizz :) is the fork/pull request 'concept' available on savannah ? i'd like to [learn how to] contribute to the clutter branch of guile-gnome, i have a savannah account and [already had

<tupi>a guile-gnome git clone

<tupi>but i can't find how to fork [reading the savannah git doc] a project

<davexunit>clone the repo on your machine

<tupi>davexunit: i already had a clone

<davexunit>do you have a remote to push to?

<davexunit>gitorious, github, etc?

<tupi>i have a gitorious account, which holds my kisê/common projects, but i did not put guile-gnome there

<tupi>how would i do that actually ?

<davexunit>the basic workflow is: clone repo, make feature branch, do your work, send a patch to the mailing list

<tupi>ok, but wingo did mention send a pull request and so i am trying to learn to do that

<davexunit>is guile-gnome on gitorious?

<davexunit>he might mean on there

<tupi>not that i am aware of, it's on savannah

<tupi>url = git://git.sv.gnu.org/guile-gnome.git

<tupi>

<tupi>so the fork / pull request is not working 'with' savannah hosted project then ?

<davexunit>fork/pull request is github terminology. I've never heard it used with respect to savannah.

<fbs>youre gonna need access right

<tupi>ok

<tupi>and tx both of you. too bad there is no such contribution schema on savannah

<tupi>but i can ask to be a member [for clutter examples contribution] and always ask review on the mailing list before to push ...

<fbs>I think thats still 'the' way to do it

<tupi>yes. i just sent a membership request

<fbs>I like the 'github model', makes it easy

<civodul>how come fport_fill_input can raise system-error with EINTR

<wingo>civodul: for Ctrl-C i imagine

<wingo>or is that something else

*wingo trying to do away with scm_tc16_memoizer

<civodul>wingo: but SCM_SYSCALL is supposed to catch EINTR and loop

<wingo>civodul: perhaps something else schedules an async to throw that error?

<civodul>hmm

<civodul>arrrgh

<civodul>no

<civodul>wingo: it's a while(0) loop

<civodul>so the "continue;" there just leaves the loop

<civodul>IOW, it never worked

<wingo>..............................................................

<wingo>that's amazing

<civodul>indeed :-)

<civodul>so many years...

<wingo>if the while(0) is at the end though, does the continue work?

<civodul>it is: do { ... } while (0)

<wingo>doesn't that work?

<civodul>well no

<wingo>i would think that continue would restart the loop correctly

<wingo>maybe i'm showing my ignorance

<civodul>i double-checked just in case ;-), and no, it doesn't work

<wingo>:)

<wingo>so did i introduce that bug?

<wingo>i think so

<civodul>it seems, yes :-)

<civodul>not sure what to do now

<civodul>well, email :-)

<wingo>that's incredible

<wingo>that must be one of the worst bugs i have made

<civodul>apparently people have been able to deal with that :-)

<wingo>indeed, c99 is pretty clear here; i must have just imagined a different language

<wingo>zow

<civodul>i didn't notice until i had actually macro-expanded it and stepped through it

IRC channel logs

2013-06-23.log