sigaddset()

Add a signal to a set

Synopsis:

#include <signal.h>

int sigaddset( sigset_t *set, 
               int signo );

Arguments:

set

A pointer to the sigset_t object that you want to add the signal to.

signo

The signal that you want to add. For more information, see “POSIX signals” in the documentation for SignalAction().

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The sigaddset() function adds signo to the set pointed to by set.

Returns:

0

Success.

-1

An error occurred (errno is set).

Errors:

EINVAL

The signal signo isn't valid.

Examples:

See sigemptyset().

Classification:

POSIX 1003.1

See also:

kill(), pthread_sigmask(), raise(), sigaction(), sigdelset(), sigemptyset(), sigfillset(), sigismember(), signal(), sigpending(), sigprocmask()