m_type">param_type</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="piecewise_line_idp82782016/param_type.html" title="Class param_type">param_type</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>

    <span class="comment">// <a class="link" href="piecewise_line_idp82782016/param_type.html#idp82793504-bb">public member functions</a></span>
    <span class="identifier">std</span><sp