libuuid/man/uuid_is_null.3

   1 .\" Copyright 1999 Andreas Dilger (adilger@enel.ucalgary.ca)
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  31 .\" Created  Wed Mar 10 17:42:12 1999, Andreas Dilger
  32 .TH UUID_IS_NULL 3 "May 2009" "util-linux" "Libuuid API"
  33 .SH NAME
  34 uuid_is_null \- compare the value of the UUID to the NULL value
  35 .SH SYNOPSIS
  36 .nf
  37 .B #include <uuid.h>
  38 .sp
  39 .BI "int uuid_is_null(uuid_t " uu );
  40 .fi
  41 .SH DESCRIPTION
  42 The
  43 .B uuid_is_null
  44 function compares the value of the supplied UUID variable
  45 .I uu
  46 to the NULL value.  If the value is equal to the NULL UUID, 1 is returned,
  47 otherwise 0 is returned.
  48 .SH AUTHOR
  49 Theodore Y.\& Ts'o
  50 .SH AVAILABILITY
  51 .B libuuid
  52 is part of the util-linux package since version 2.15.1 and is available from
  53 https://www.kernel.org/pub/linux/utils/util-linux/.
  54 .na
  55 .SH SEE ALSO
  56 .BR uuid (3),
  57 .BR uuid_clear (3),
  58 .BR uuid_compare (3),
  59 .BR uuid_copy (3),
  60 .BR uuid_generate (3),
  61 .BR uuid_time (3),
  62 .BR uuid_parse (3),
  63 .BR uuid_unparse (3)
  64 .ad