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| No such thing as a small change | |
| PerlMonks |
Re^4: Efficient bit-twiddling in Perl.by BrowserUk (Pope) |
| on Feb 28, 2013 at 19:58 UTC ( #1021104=note: print w/ replies, xml ) | Need Help?? |
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The lookup table generation is 2/10th second, 1-off cost at startup. Completely insignificant to the cost of the inner loop lookup code that could theoretically be executed 4 billion times. (Once for each 32-bit number.) More typical is mid 100s to low 1000s of millions of times. A small saving overall, but only one part of the inner loop code I am optimising. Already down from a couple of weeks to ~4 days. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
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