<p>This seems like a simple question, but I can't find it with the Stack Overflow search or Google. What does a type followed by a <code>_t</code> mean? Such as</p>

<pre><code>int_t anInt;
</code></pre>

<p>I see it a lot in C code meant to deal closely with hardware—I can't help but think that they're related.</p>

It means type.
```
size_t
```
is the size type.