BitOps

VisualOS: Programer Reference
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void        set_bit                         (gint nr,
                                             guint32 *addr);

Set bit number nr in the bitmap pointed by addr.

`nr` :	index of the bit to be set to 1.
`addr` :	address of the bitmap.

gboolean    test_bit                        (gint nr,
                                             guint32 *addr);

Test if bit number nr of the bitmap pointed by addr is 1 or 0.

`nr` :	index of the bit to be tested.
`addr` :	address of the bitmap.
Returns :	TRUE if the bit is 1 and FALSE otherwise.

void        clear_bit                       (gint nr,
                                             guint32 *addr);

Clear bit number nr in the bitmap pointed by addr.

`nr` :	index of the bit to be cleard to 0.
`addr` :	address of the bitmap.