.\" 2007-10-26 mdw added wording that a sigset_t must be initialized
.\" prior to use
.\"
-.TH SIGSETOPS 3 2013-09-24 "Linux" "Linux Programmer's Manual"
+.TH SIGSETOPS 3 2014-04-14 "Linux" "Linux Programmer's Manual"
.SH NAME
sigemptyset, sigfillset, sigaddset, sigdelset, sigismember \- POSIX
signal set operations
.B EINVAL
.I sig
is not a valid signal.
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR sigemptyset (),
+.BR sigfillset (),
+.BR sigaddset (),
+.BR sigdelset (),
+.BR sigismember (),
+.BR sigisemptyset (),
+.BR sigorset (),
+and
+.BR sigandset ()
+functions are thread-safe.
.SH CONFORMING TO
POSIX.1-2001.
.SH NOTES
.BR sigprocmask (2),
.BR sigsuspend (2)
.SH COLOPHON
-This page is part of release 3.64 of the Linux
+This page is part of release 3.65 of the Linux
.I man-pages
project.
A description of the project,