=proto
duk_c_function duk_get_c_function(duk_context *ctx, int index);

=stack
[ ... val! ... ]

=summary
<p>Get the Duktape/C function pointer (a <code>duk_c_function</code>) from an
Ecmascript function object associated with a Duktape/C function.  If the
value is not such a function or <code>index</code> is invalid, returns <code>NULL</code>.</p>

<p>If you prefer an error to be thrown for an invalid value or index, use
<code><a href="#duk_require_c_function">duk_require_c_function()</a></code>.</p>

=example
duk_c_function funcptr;

funcptr = duk_get_c_function(ctx, -3);

=tags
stack
function