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-.\" Copyright (c) 1983, 1991, 1993
-.\" The Regents of the University of California. All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" @(#)sigsetops.3 8.1 (Berkeley) 6/4/93
-.\" $FreeBSD$
-.\"
-.Dd December 16, 2004
-.Dt SIGSETOPS 3
-.Os
-.Sh NAME
-.Nm sigemptyset ,
-.Nm sigfillset ,
-.Nm sigaddset ,
-.Nm sigdelset ,
-.Nm sigismember
-.Nd manipulate signal sets
-.Sh LIBRARY
-.Lb libc
-.Sh SYNOPSIS
-.In signal.h
-.Ft int
-.Fn sigemptyset "sigset_t *set"
-.Ft int
-.Fn sigfillset "sigset_t *set"
-.Ft int
-.Fn sigaddset "sigset_t *set" "int signo"
-.Ft int
-.Fn sigdelset "sigset_t *set" "int signo"
-.Ft int
-.Fn sigismember "const sigset_t *set" "int signo"
-.Sh DESCRIPTION
-These functions manipulate signal sets stored in a
-.Fa sigset_t .
-Either
-.Fn sigemptyset
-or
-.Fn sigfillset
-must be called for every object of type
-.Fa sigset_t
-before any other use of the object.
-.Pp
-The
-.Fn sigemptyset
-function initializes a signal set to be empty.
-.Pp
-The
-.Fn sigfillset
-function initializes a signal set to contain all signals.
-.Pp
-The
-.Fn sigaddset
-function adds the specified signal
-.Fa signo
-to the signal set.
-.Pp
-The
-.Fn sigdelset
-function deletes the specified signal
-.Fa signo
-from the signal set.
-.Pp
-The
-.Fn sigismember
-function returns whether a specified signal
-.Fa signo
-is contained in the signal set.
-.Sh RETURN VALUES
-The
-.Fn sigismember
-function returns 1
-if the signal is a member of the set,
-0 otherwise.
-The other functions return 0 upon success.
-A \-1 return value
-indicates an error occurred and the global variable
-.Va errno
-is set to indicate the reason.
-.Sh ERRORS
-These functions could fail if one of the following occurs:
-.Bl -tag -width Er
-.It Bq Er EINVAL
-.Fa signo
-has an invalid value.
-.El
-.Sh SEE ALSO
-.Xr kill 2 ,
-.Xr sigaction 2 ,
-.Xr sigpending 2 ,
-.Xr sigprocmask 2 ,
-.Xr sigsuspend 2
-.Sh STANDARDS
-These functions are defined by
-.St -p1003.1-88 .
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