&gt; I&#x27;m surprised to learn that Go did not already check the result of calculations<p>Yeah. As the announcement says, it&#x27;s coming in 1.6 and we (CloudFlare) backported it in our public tree, in case anyone else wants to use it: <a href="https:&#x2F;&#x2F;github.com&#x2F;cloudflare&#x2F;go&#x2F;commits&#x2F;go1.5.3-cloudflare1" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;cloudflare&#x2F;go&#x2F;commits&#x2F;go1.5.3-cloudflare1</a>