Provided by:
uuid-dev_1.2-1.40.2-1ubuntu1_i386 
NAME
uuid_is_null - compare the value of the UUID to the NULL value
SYNOPSIS
#include <uuid/uuid.h>
int uuid_is_null(uuid_t uu);
DESCRIPTION
The uuid_is_null function compares the value of the supplied UUID vari‐
able uu to the NULL value. If the value is equal to the NULL UUID, 1
is returned, otherwise 0 is returned.
AUTHOR
Theodore Y. Ts’o
AVAILABILITY
http://e2fsprogs.sourceforge.net/
uuid(3), uuid_clear(3), uuid_compare(3), uuid_copy(3), uuid_gener
ate(3), uuid_time(3), uuid_parse(3), uuid_unparse(3)