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    SubjectRe: [KJ][RFC][PATCH] BIT macro cleanup
    Date
    On Saturday 24 February 2007 07:59, Richard Knutsson wrote:
    > Vojtech Pavlik wrote:
    > > On Fri, Feb 23, 2007 at 11:43:44PM +0100, Richard Knutsson wrote:
    > >
    > >
    > >> Is the reason for the modulo to put a bitmask larger then the variable
    > >> into an array?
    > >>
    > >
    > > The complementary LONG() macro will tell you the index of an array of
    > > longs where the bit should be set.
    > >
    > This may be a little OT, but how come it is not done as an function?
    > Maybe something like "(set/get)_long_mask(...)".

    We have it. Is is called set_bit (or __set_bit) and works wery well for
    single bit operations, but sometimes it is nice to be able to write

    a = BIT(b) | BIT(c);

    --
    Dmitry
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