onstant
bytes, given by <tt>c</tt>. If <tt>c</tt> is omitted, the data is
zero-filled.
</p>
<p>
Performance notice: <tt>ffi.fill()</tt> may be used as a faster
(inlinable) replacement for the C&nbsp;library function
<tt>memset(dst,&nbsp;c,&nbsp;len)</tt>. Please note the different
order of arguments!
</p>

<h2 id="target">Target-specific Information</h2>

<h3 id="ffi_abi"><tt>status = ffi.abi(param)</tt></h3>
<p>
Returns <tt>true</tt> if <tt>param</tt> (a Lua string) applies for the
target ABI (Application 