As the minimum perl version is 5.006, enable 'use warnings'.
use 5.006;
use strict;
-# use warnings; # dont use warnings for older Perls
+use warnings;
-use DynaLoader;
use Math::BigInt::Calc;
-use vars qw/@ISA $VERSION $BASE $BASE_LEN/;
-
-@ISA = qw(DynaLoader);
+use vars qw/$VERSION $BASE $BASE_LEN/;
$VERSION = '0.23';
-bootstrap Math::BigInt::FastCalc $VERSION;
+require XSLoader;
+XSLoader::load(__PACKAGE__);
##############################################################################
# global constants, flags and accessory