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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/signal/sigismember.c | |
Initial version
Diffstat (limited to 'src/signal/sigismember.c')
| -rw-r--r-- | src/signal/sigismember.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/signal/sigismember.c b/src/signal/sigismember.c new file mode 100644 index 0000000..ab87d62 --- /dev/null +++ b/src/signal/sigismember.c @@ -0,0 +1,8 @@ +#include <signal.h> + +int sigismember(const sigset_t *set, int sig) +{ + unsigned s = sig-1; + if (s >= _NSIG-1) return 0; + return !!(set->__bits[s/8/sizeof *set->__bits] & 1UL<<(s&8*sizeof *set->__bits-1)); +} |