| Viet-Trung Luu | 96b05c1 | 2016-01-11 11:26:36 -0800 | [diff] [blame] | 1 | #include <signal.h> |
| 2 | #include <errno.h> | ||||
| 3 | |||||
| George Kulakowski | 17e3b04 | 2016-02-18 15:59:50 -0800 | [diff] [blame] | 4 | int sigaddset(sigset_t* set, int sig) { |
| 5 | unsigned s = sig - 1; | ||||
| 6 | if (s >= _NSIG - 1 || sig - 32U < 3) { | ||||
| 7 | errno = EINVAL; | ||||
| 8 | return -1; | ||||
| 9 | } | ||||
| 10 | set->__bits[s / 8 / sizeof *set->__bits] |= | ||||
| 11 | 1UL << (s & 8 * sizeof *set->__bits - 1); | ||||
| 12 | return 0; | ||||
| Viet-Trung Luu | 96b05c1 | 2016-01-11 11:26:36 -0800 | [diff] [blame] | 13 | } |