sigismember

Syntax

#include <signal.h> int sigismember (sigset_t *set, int signo)

Description

This function checks whether the signal specified by signo is a member of the set of signals pointed to by set.

Return Value

1 if the specified signal is a member of the set, 0 if it isn't, or if signo specifies an unknown signal, -1 if set is a NULL pointer.

Portability

ANSI/ISO C	No
POSIX	1003.2-1992; 1003.1-2001