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| author | Rich Felker <dalias@aerifal.cx> | 2011-02-12 00:22:29 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-02-12 00:22:29 -0500 |
| commit | 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 (patch) | |
| tree | 6eaef0d8a720fa3da580de87b647fff796fe80b3 /src/signal/sigismember.c | |
| download | musl-0b44a0315b47dd8eced9f3b7f31580cf14bbfc01.tar.gz musl-0b44a0315b47dd8eced9f3b7f31580cf14bbfc01.tar.xz musl-0b44a0315b47dd8eced9f3b7f31580cf14bbfc01.zip | |
initial check-in, version 0.5.0 v0.5.0
Diffstat (limited to 'src/signal/sigismember.c')
| -rw-r--r-- | src/signal/sigismember.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/signal/sigismember.c b/src/signal/sigismember.c new file mode 100644 index 00000000..afd29e52 --- /dev/null +++ b/src/signal/sigismember.c @@ -0,0 +1,12 @@ +#include <signal.h> +#include <errno.h> + +int sigismember(const sigset_t *set, int sig) +{ + unsigned s = sig-1; + if (s >= 8*sizeof(sigset_t)) { + errno = EINVAL; + return -1; + } + return !!(set->__bits[s/8/sizeof *set->__bits] & 1UL<<(s&8*sizeof *set->__bits-1)); +} |