PSI_DECL(int sigaddset, [(sigset_t * set, int signum)])
PSI_DECL(int sigaltstack, [(const stack_t *ss, stack_t *oss)])
PSI_DECL(int sigdelset, [(sigset_t *set, int signum)])
PSI_DECL(int sigaddset, [(sigset_t * set, int signum)])
PSI_DECL(int sigaltstack, [(const stack_t *ss, stack_t *oss)])
PSI_DECL(int sigdelset, [(sigset_t *set, int signum)])