/sys$common/syshlp/HELPLIB.HLB  —  CRTL  sigwait
    Suspends a calling thread and waits for queued signals to arrive.

    This function is supported on OpenVMS Integrity servers and
    Alpha only.

    Format

      #include  <signal.h>

      int sigwait  (const sigset_t set, int *sig);
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