use Time::HiRes () ;
  BEGIN { *CORE::GLOBAL::time = \&Time::HiRes::time ; } ;

##</code><code>##

  package Htime ;

  use Exporter qw(import) ;
  our @EXPORT = qw(htime hsleep halarm) ;

  use Time::HiRes () ;

  *htime  = \&Time::HiRes::time ;
  *hsleep = \&Time::HiRes::sleep ;
  *halarm = \&Time::HiRes::alarm ;