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                   Rate ikegami code    bfdi code
ikegami code 16393443/s           --         -20%
bfdi code    20408163/s          24%           --

#!/usr/local/bin/perl

...
   'bfdi code'   => &get_using_date_manip,
   'ikegami code' => &get_using_posix_and_time_local,
});