 <p>See, DDG relies on Bing, and Bing won't index this site for
    some reason.

    <p>So DDG is <a
    href="https://duckduckgo.com/?q=site%3Ahttps%3A%2F%2Fbeej.us%2Fguide%2Fbgc%2F&ia=web">blind
    to this content</a>. And <a
    href="https://www.bing.com/search?q=site%3Ahttps%3A%2F%2Fbeej.us%2Fguide%2Fbgc&form=QBLH&sp=-1&pq=site%3Ahttps%3A%2F%2Fbeej.us%2Fguide%2Fbg&sc=0-29&qs=n&sk=">so
    is Bing</a>.

    <p>Here's Google's search of the C guide (try searching for "<tt>acos</tt>"):

    <script asyn