sigdelset() -- Signal Function (libc)

Delete a signal from a set
#include <signal.h>
int sigdelset (set, signo)
sigset_t *set;
int signo;

sigdelset() is  one of a  set of signalling functions  that manipulate data
objects addressable  by the application, instead of a  set of signals known
to the  system.  It  deletes the  signal signo from  the set of  signals to
which set points.

If all goes well, sigdelset() returns  zero.  If signo is set to an invalid
or unsupported value, it returns -1 and sets errno to EINVAL.

See Also

libc,
sigaction(),
sigaddset(),
sigemptyset(),
sigfillset(),
sigismember()

Notes

If  your program  is  compiled using  the  System V  Release 4  compilation
environment, this  is a  function that  is linked in  from libc. If  not, a
macro form is used.

© 2012 by Stephen A. Ness