std::copy versus pointer copy

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  • franky.backeljauw@ua.ac.be

    #31
    Re: std::copy versus pointer copy versus member copy

    On Mon, 15 Sep 2003, tom_usenet wrote:
    [color=blue]
    > It depends on the compiler. Good candidates are std::copy,
    > std::memcpy, memberwise loop, and, often the winner for poorer
    > compilers, Duff's Device.
    >
    > In my tests, the results depend very much on the precise optimization
    > settings. With loop unrolling, iCopy, mCopy and dCopy are generally
    > better than cCopy (memcpy) and sCopy (std::copy). Without, dCopy is
    > generally best, followed by the rest all about even.[/color]

    Thanks! I did not yet test with the maximum optimizations ...

    Regards,

    Franky B.

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