sigaddset

Syntax

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

Description

This function adds the individual signal specified by signo the set of signals pointed to by set.

Return Value

0 upon success, -1 if set is a NULL pointer, or if signo is specifies an unknown signal.

Portability

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