 class="anchor"></a><code><span class="keyword">val</span> is_positive : <span>(<a href="argument-1-B/index.html#type-t">B.t</a> * <span class="type-var">'a</span>)</span> <span>&#45;&gt;</span> bool</code></dt><dt class="spec value" id="val-is_negative"><a href="#val-is_negative" class="anchor"></a><code><span class="keyword">val</span> is_negative : <span>(<span class="type-var">'a</span> * <a href="argument-1-B/index.html#type-t">B.t</a>)</span> <span>&#45;&gt;</span> bool</code></dt><dt class="spec valu