SIGSETOPS(3) BSD Library Functions Manual SIGSETOPS(3)

NAME
     ssiiggeemmppttyysseett, ssiiggffiillllsseett, ssiiggaaddddsseett, ssiiggddeellsseett, ssiiggiissmmeemmbbeerr - manipulate
     signal sets

LLIIBBRRAARRYY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##iinncclluuddee <>

     int
     ssiiggeemmppttyysseett(sigsett *set);

     int
     ssiiggffiillllsseett(sigsett *set);

     int
     ssiiggaaddddsseett(sigsett *set, int signo);

     int
     ssiiggddeellsseett(sigsett *set, int signo);

     int
     ssiiggiissmmeemmbbeerr(const sigsett *set, int signo);

DESCRIPTION
     These functions manipulate signal sets stored in a sigsett.  Either
     ssiiggeemmppttyysseett() or ssiiggffiillllsseett() must be called for every object of type
     sigsett before any other use of the object.

     The ssiiggeemmppttyysseett() function initializes a signal set to be empty.

     The ssiiggffiillllsseett() function initializes a signal set to contain all sig-
     nals.

     The ssiiggaaddddsseett() function adds the specified signal signo to the signal
     set.

     The ssiiggddeellsseett() function deletes the specified signal signo from the sig-
     nal set.

     The ssiiggiissmmeemmbbeerr() function returns whether a specified signal signo is
     contained in the signal set.

     These functions are provided as macros in the include file .
     Actual functions are available if their names are undefined (with #undef
     name).

RETURN VALUES
     The ssiiggiissmmeemmbbeerr() function returns 1 if the signal is a member of the
     set, 0 otherwise.  The other functions return 0.

EERRRROORRSS
     Currently no errors are detected.

SEE ALSO
     kill(2), sigaction(2), sigsuspend(2)

STANDARDS
     These functions are defined by IEEE Std 1003.1-1988 (``POSIX.1'').

BSD                              June 4, 1993                              BSD