26.4, the generalized numeric operations such as accumulate, are extended
with the following functions:

power (x, n);
power (x, n, moniod_operation);

Returns, in FORTRAN syntax, "x ** n" where n>=0. In the
case of n == 0, returns the identity element for the
monoid operation. The two-argument signature uses multiplication (for
a true "power" implementation), but addition is supported as well.
The operation functor must be associative.

The `iota`

function wins the award for Extension With the
Coolest Name. It "assigns sequentially increasing values to a range.
That is, it assigns value to *first, value + 1 to *(first + 1) and so
on." Quoted from SGI documentation.

void iota(_ForwardIter first, _ForwardIter last, _Tp value);