p>boost::proto::negate &#8212; A metafunction for generating unary minus expression types, 
          a grammar element for matching unary minus expressions, and 
          a <a class="link" href="../../PrimitiveTransform.html" title="Concept PrimitiveTransform">PrimitiveTransform</a> that dispatches to the 
          <code class="computeroutput"><a class="link" href="pass_through.html" title="Struct template pass_through">proto::pass_through&lt;&gt;</a></code> 
          transform.</p>
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