Function groups are groups of related functions, generally implemented as cases of a single internal C routine, for which individual or group methods can be
written for arbitrary classes. That is, you can write a method for any or all
of the functions in the group, or write a single method for the group as a
whole.
DETAILS:
There are currently seven groups:
Arith,
Compare,
Logic,
Math,
Math2
,
Ops, and
Summary. The
Ops group consists of the three
groups
Arith,
Compare, and
Logic.