00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">    #define BOOST_GIL_CLASS_REQUIRE(type_var, ns, concept) \</span></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="preprocessor">        BOOST_CLASS_REQUIRE(type_var, ns, concept);</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    <span class="keyword">templ