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    SubjectRe: Non-urgent issue with fs/isofs/util.c
    Date
    From
    "Helge Hafting" <helge.hafting@daldata.no> said:

    [...]

    > The equivalent code
    > if (!((year+2) & 3) && month > 2 && year != 130) is probably
    > faster. The somewhat expensive mod operator is
    > replaced by a bitwise "and", that is faster on most platforms.

    ... and your compiler knows that, and should replace the original code by
    this one if warranted. Take a look at the assembly output for both
    alternatives before proposing optimizations.
    --
    Dr. Horst H. von Brand mailto:vonbrand@inf.utfsm.cl
    Departamento de Informatica Fono: +56 32 654431
    Universidad Tecnica Federico Santa Maria +56 32 654239
    Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513


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