eyword">val</span> minus_one : <a href="#type-t">t</a></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-of_big_int"><a href="#val-of_big_int" class="anchor"></a><code><span><span class="keyword">val</span> of_big_int : <span><span class="xref-unresolved">Z</span>.t <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-t">t</a> option</span></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-opt_to_big_int"><a href="#val