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Re^5: Efficient bit-twiddling in Perl.

by Tux (Monsignor)
on Mar 01, 2013 at 14:05 UTC ( #1021265=note: print w/ replies, xml ) Need Help??


in reply to Re^4: Efficient bit-twiddling in Perl.
in thread Efficient bit-twiddling in Perl.

tables generated sample data generated Shift&and took: 0.000000283640 seconds Lookup took: 0.000000553529 seconds Lookup3 took: 0.000000308301 seconds Lookup4 took: 0.000000435056 seconds Lookup5 took: 0.000000487484 seconds Lookup6 took: 0.000000454496 seconds Lookup7 took: 0.000000476669 seconds Linux 3.4.28-2.20-desktop [openSUSE 12.2 (Mantis)] x86_64 Xeon(R) CPU E5-1650 0 @ 3.20GHz/1200(12) x86_64 16009 Mb This is perl 5, version 16, subversion 2 (v5.16.2) built for x86_64-li +nux-ld

I think that proves my point in Re^3: Efficient bit-twiddling in Perl.


Enjoy, Have FUN! H.Merijn


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Re^6: Efficient bit-twiddling in Perl.
by BrowserUk (Pope) on Mar 01, 2013 at 14:49 UTC
    I think that proves my point in Re^3: Efficient bit-twiddling in Perl.
    I am stunned by the 20% gain you get, and wonder if that would differ per perl version and/or architecture.

    It absolutely will, but as I said in the OP, this is for me, on my hardware. Not an exemplar for anyone else.


    With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.

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