="keyword">sig</span> ... <span class="keyword">end</span></code></div><dl><dt class="spec value" id="val-additive_inverse"><a href="#val-additive_inverse" class="anchor"></a><code><span class="keyword">val</span> additive_inverse : <a href="../argument-1-R/index.html#type-t">R.t</a> <span>&#45;&gt;</span> bool</code></dt></dl></div></body></html>