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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).

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