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    SubjectRe: [PATCH] only use 48-bit lba when necessary
    Juan Quintela wrote:


    >Reason is that:
    >
    >if (expr)
    > var = true;
    >else
    > var = false;
    >
    >is always a bad construct.
    >
    >var = expr;
    >
    >is a better construct to express that meaning.


    Yes, but:

    if (expr1 && expr2)
    var = true;
    else
    var = false;

    is usually better turned into something that avoids jumps
    when it's safe to evaluate both parts unconditionally:

    var = (expr1 != 0) & (expr2 != 0);

    or (if you can stand it):

    var = !!expr1 & !!expr2;


    --
    Chuck
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