There is a chicken and an egg problem here. It is difficult to write a good package in Perl to manipulate various numerical types. Nobody has written such a package in Perl. You don't see people trying to use such a package. These all feed back on each other.

If we had a good package for manipulating different numerical types in Perl, who can say who would come out of the woodwork to use it? If it was easy to write it, do you think that someone would have put it on CPAN? Have you seen how many Math:: modules there are? Many for things that you'd never expect to see people use in Perl?