s="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ForwardIterator<span class="special">&gt;</span> 
  <span class="identifier">BOOST_CXX14_CONSTEXPR</span> <span class="keyword">bool</span> 
  <span class="identifier">is_sorted</span><span class="special">(</span><span class="identifier">ForwardIterator</span> first<span class="special">,</span> <span class="identifier">ForwardIterator</span> last<span class="special">)</span><span class="special">;</span></pr