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lines 8-30 of file: include/cppad/example/atomic_four/vector/forward_op.hpp
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{xrst_begin atomic_four_vector_forward_op.hpp}

Atomic Vector Forward Mode: Example Implementation
##################################################

Purpose
*******
The ``forward`` routine overrides the virtual functions
used by the atomic_four base class for forward mode calculations; see
:ref:`forward<atomic_four_forward-name>` .
It determines which operator is specified for this call and transfers
the call to the operator's implementation.
There are two versions of the ``forward`` routine, one for *Base*
and one for ``AD<Base>`` .

Source
******
{xrst_literal
   // BEGIN C++
   // END C++
}

{xrst_end atomic_four_vector_forward_op.hpp}