254 #define ATOMIC_MASK(bit) (1 << ((bit) & (ATOMIC_BITS - 1)))  argument
255 #define ATOMIC_ELEM(addr, bit) ((addr) + ((bit) / ATOMIC_BITS))  argument
278      * @brief Atomically test a bit.
280      * This routine tests whether bit number @a bit of @a target is set or not.
284      * @param bit Bit number (starting from 0).
286      * @return 1 if the bit was set, 0 if it wasn't.
289     atomic_test_bit(const atomic_t *target, int bit)  in atomic_test_bit()  argument
291         atomic_val_t val = atomic_get(ATOMIC_ELEM(target, bit));  in atomic_test_bit()
293         return (1 & (val >> (bit & (ATOMIC_BITS - 1))));  in atomic_test_bit()
297      * @brief Atomically test and clear a bit.
299      * Atomically clear bit number @a bit of @a target and return its old value.
303      * @param bit Bit number (starting from 0).
305      * @return 1 if the bit was set, 0 if it wasn't.
308     atomic_test_and_clear_bit(atomic_t *target, int bit)  in atomic_test_and_clear_bit()  argument
310         atomic_val_t mask = ATOMIC_MASK(bit);  in atomic_test_and_clear_bit()
313         old = atomic_and(ATOMIC_ELEM(target, bit), ~mask);  in atomic_test_and_clear_bit()
319      * @brief Atomically set a bit.
321      * Atomically set bit number @a bit of @a target and return its old value.
325      * @param bit Bit number (starting from 0).
327      * @return 1 if the bit was set, 0 if it wasn't.
330     atomic_test_and_set_bit(atomic_t *target, int bit)  in atomic_test_and_set_bit()  argument
332         atomic_val_t mask = ATOMIC_MASK(bit);  in atomic_test_and_set_bit()
335         old = atomic_or(ATOMIC_ELEM(target, bit), mask);  in atomic_test_and_set_bit()
341      * @brief Atomically clear a bit.
343      * Atomically clear bit number @a bit of @a target.
347      * @param bit Bit number (starting from 0).
352     atomic_clear_bit(atomic_t *target, int bit)  in atomic_clear_bit()  argument
354         atomic_val_t mask = ATOMIC_MASK(bit);  in atomic_clear_bit()
356         atomic_and(ATOMIC_ELEM(target, bit), ~mask);  in atomic_clear_bit()
360      * @brief Atomically set a bit.
362      * Atomically set bit number @a bit of @a target.
366      * @param bit Bit number (starting from 0).
371     atomic_set_bit(atomic_t *target, int bit)  in atomic_set_bit()  argument
373         atomic_val_t mask = ATOMIC_MASK(bit);  in atomic_set_bit()
375         atomic_or(ATOMIC_ELEM(target, bit), mask);  in atomic_set_bit()