Bignum objects are created automatically when integer calculations would otherwise overflow a Fixnum . When a calculation involving Bignum objects returns a result that will fit in a Fixnum , the result is automatically converted.
Arithmetic operations Performs various arithmetic operations on big .
This is the basis for the tests in Comparable . If big doesn't fit in a Float , the result is infinity. Released under the terms of the Open Publication License V1.0. This reference is available for download .