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Unified Diff: fusl/src/signal/sigaddset.c

Issue 1573973002: Add a "fork" of musl as //fusl. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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Index: fusl/src/signal/sigaddset.c
diff --git a/fusl/src/signal/sigaddset.c b/fusl/src/signal/sigaddset.c
new file mode 100644
index 0000000000000000000000000000000000000000..085d1f4ab98d2d726ad401bebd89881e11c633af
--- /dev/null
+++ b/fusl/src/signal/sigaddset.c
@@ -0,0 +1,13 @@
+#include <signal.h>
+#include <errno.h>
+
+int sigaddset(sigset_t *set, int sig)
+{
+ unsigned s = sig-1;
+ if (s >= _NSIG-1 || sig-32U < 3) {
+ errno = EINVAL;
+ return -1;
+ }
+ set->__bits[s/8/sizeof *set->__bits] |= 1UL<<(s&8*sizeof *set->__bits-1);
+ return 0;
+}
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