Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

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


Comment on Re: Re: Re: On Golf
Replies are listed 'Best First'.
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
    % man 3 strfry

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://81983]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others imbibing at the Monastery: (10)
As of 2015-07-30 10:40 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (271 votes), past polls