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+.\" Copyright 1999 Andreas Dilger (adilger@enel.ucalgary.ca)
+.\"
+.\" %Begin-Header%
+.\" 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, and the entire permission notice in its entirety,
+.\" including the disclaimer of warranties.
+.\" 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.
+.\" 3. The name of the author may not be used to endorse or promote
+.\" products derived from this software without specific prior
+.\" written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+.\" WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
+.\" WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 NOT ADVISED OF THE POSSIBILITY OF SUCH
+.\" DAMAGE.
+.\" %End-Header%
+.\"
+.\" Created Wed Mar 10 17:42:12 1999, Andreas Dilger
+.TH UUID_IS_NULL 3 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@"
+.SH NAME
+uuid_is_null \- compare the value of the UUID to the NULL value
+.SH SYNOPSIS
+.nf
+.B #include <uuid/uuid.h>
+.sp
+.BI "int uuid_is_null(uuid_t " uu );
+.fi
+.SH DESCRIPTION
+The
+.B uuid_is_null
+function compares the value of the supplied UUID variable
+.I uu
+to the NULL value. If the value is equal to the NULL UUID, 1 is returned,
+otherwise 0 is returned.
+.SH AUTHOR
+Theodore Y. Ts'o
+.SH AVAILABILITY
+.UR http://e2fsprogs.sourceforge.net/
+http://e2fsprogs.sourceforge.net/
+.UE
+.SH "SEE ALSO"
+.BR uuid (3),
+.BR uuid_clear (3),
+.BR uuid_compare (3),
+.BR uuid_copy (3),
+.BR uuid_generate (3),
+.BR uuid_time (3),
+.BR uuid_parse (3),
+.BR uuid_unparse (3)