How to increase variable precision in Dyalog APL?

Question

I need to work with precision in Dyalog APL. I know the value of ⎕PP sets the precision, but I can't increase it over 18, so I can't get more precision than 18 digits and I need to operate with big numbers. Is there any way to increase precision?

Answer 1

Quad PP is for "print precision", and is relevant only for displaying numbers in the Dyalog APL session, and has nothing to do with the actual precision of numbers.

There is a supplied workspace named "dfns" that contains functions for operating with big numbers.