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explain the "brainfuck condition"

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Ludwig Ortmann 2013-10-28 12:54:16 +01:00
parent 5e6cc92291
commit f1b89df8d8
1 changed files with 1 additions and 1 deletions
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2
core/msg.c
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@ -275,7 +275,7 @@ static int _msg_receive(msg_t *m, int block)
int msg_init_queue(msg_t *array, int num) int msg_init_queue(msg_t *array, int num)
{ {
/* make sure brainfuck condition is met */ /* check if num is a power of two by comparing to its complement */
if (num && (num & (num - 1)) == 0) { if (num && (num & (num - 1)) == 0) {
tcb_t *me = (tcb_t*) active_thread; tcb_t *me = (tcb_t*) active_thread;
me->msg_array = array; me->msg_array = array;