Tests Fail

[csv610]

Hello,

It is expected behavior of the code?

ok 1 - clear_register
not ok 2 - dump_and_restore
ok 3 - estimate_cardinality
ok 4 - get_register_size
1..4
not ok 1 - hll_HyperLogLog
ok 1 - pass_maximum_argument_in_range
ok 2 - pass_minimum_arugment_in_range
ok 3 - pass_out_of_range_argument_max
ok 4 - pass_out_of_range_argument_min
1..4
ok 2 - create_instance
not ok 1 - merge_registers
ok 2 - merge_size_unmatched_registers
1..2
not ok 3 - merge
1..3
hll_HyperLogLog::dump_and_restore failed:
Caught unknown exception
merge::merge_registers failed:
Expected: less than 0.0040625
Actual: 0.00470031

Test run complete. 10 tests run, 8 succeeded, 2 failed.