.\" Copyright 1999 Andreas Dilger (adilger@enel.ucalgary.ca)
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.\" Created  Wed Mar 10 17:42:12 1999, Andreas Dilger
.TH UUID_IS_NULL 3 "May 2009" "util-linux" "Libuuid API"
.SH NAME
uuid_is_null \- compare the value of the UUID to the NULL value
.SH SYNOPSIS
.nf
.B #include <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
.B libuuid
is part of the util-linux package since version 2.15.1 and is available from
https://www.kernel.org/pub/linux/utils/util-linux/.
.na
.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)
.ad