umber of current FIQ source and acknowledges the interrupt.</p>
<p>For Arm GIC the default implementation looks like the following example:</p>
<div class="fragment"><div class="line"><a class="code" href="irq__ctrl_8h.html#ac62964c04a7fed2c84aeea9e34f415e2">IRQn_ID_t</a> <a class="code" href="group__irq__ctrl__gr.html#ga1376a5cf6ff38344a9bbbae080af5a0f">IRQ_GetActiveFIQ</a> (<span class="keywordtype">void</span>) {</div>
<div class="line">  <span class="comment">// FIQ is not supported, return invalid ID</