ier">functor_input_policy</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>

<span class="comment">// define the function object</span>
<span class="keyword">class</span> <span class="identifier">iterate_a2m</span>
<span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
    <span class="keyword">typedef</span> <span class="keyword">char</span> <span class="identifier">result_type</span><span class="special">;</sp