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Re: Re: Re: On Golf

by rchiav (Deacon)
on May 21, 2001 at 18:51 UTC ( #81983=note: print w/replies, xml ) Need Help??


in reply to Re: Re: On Golf
in thread On Golf

Just to add to this, in C, a for-loop is smaller but less optimized than writing out each statement seperately.

And using cos() or other trig functions might be smaller but a lookup table is much faster.

When you're not specifically dealing with instructions, code size doesn't really have any correlation to speed.

Rich

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Re^4: On Golf
by FoxtrotUniform (Prior) on Jul 14, 2004 at 21:01 UTC

    Just to beat a dead horse:

    in C, a for-loop is smaller but less optimized than writing out each statement seperately.

    ...unless the unrolled loop's extra code size causes a cache miss across a slow bus, in which case the for-loop is more optimized (assuming, of course, that the loop fits in a cache line).

    --
    F o x t r o t U n i f o r m
    Found a typo in this node? /msg me
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[Corion]: Oof - "Anyway, if it is not obvious, please keep this discussion entirely confidential for now.", as seen on a public mailing list ;)
[Discipulus]: uh no choroba.. i do not practice much with online putyour image sites:can you suggest one (that possibly remove the pic after few days)?
[choroba]: Corion a bug report?
[choroba]: I have no idea :-( I used to post to photobucket.com, but they don't seem to feature "private" pictures in the free version now
[Discipulus]: dazz i'm not an experts but i think it would be possible
[Corion]: dazz: I think Image::Magick can "read" from an in-memory filehandle
[Corion]: choroba: No, some general admin discussion of how to handle (company) user accounts
[Discipulus]: might be it is necessary to pass the pic data like MIME::Base64:: encode( data..
[Discipulus]: if you have a jpeg data: or as wise Corion said IM ca n read directly your handle

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