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<title>The GNU Fortran Compiler: C_FUNLOC</title>
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<a name="C_005fFUNLOC-_002d_002d_002d-Obtain-the-C-address-of-a-procedure"></a>
<h3 class="section">8.42 <code>C_FUNLOC</code> &mdash; Obtain the C address of a procedure</h3>
<a name="index-C_005fFUNLOC"></a>
<a name="index-pointer_002c-C-address-of-procedures"></a>
<dl compact="compact">
<dt><em>Description</em>:</dt>
<dd><p><code>C_FUNLOC(x)</code> determines the C address of the argument.
</p>
</dd>
<dt><em>Standard</em>:</dt>
<dd><p>Fortran 2003 and later
</p>
</dd>
<dt><em>Class</em>:</dt>
<dd><p>Inquiry function
</p>
</dd>
<dt><em>Syntax</em>:</dt>
<dd><p><code>RESULT = C_FUNLOC(x)</code>
</p>
</dd>
<dt><em>Arguments</em>:</dt>
<dd><table>
<tr><td width="15%"><var>x</var></td><td width="70%">Interoperable function or pointer to such function.</td></tr>
</table>
</dd>
<dt><em>Return value</em>:</dt>
<dd><p>The return value is of type <code>C_FUNPTR</code> and contains the C address
of the argument.
</p>
</dd>
<dt><em>Example</em>:</dt>
<dd><div class="smallexample">
<pre class="smallexample">module x
use iso_c_binding
implicit none
contains
subroutine sub(a) bind(c)
real(c_float) :: a
a = sqrt(a)+5.0
end subroutine sub
end module x
program main
use iso_c_binding
use x
implicit none
interface
subroutine my_routine(p) bind(c,name='myC_func')
import :: c_funptr
type(c_funptr), intent(in) :: p
end subroutine
end interface
call my_routine(c_funloc(sub))
end program main
</pre></div>
</dd>
<dt><em>See also</em>:</dt>
<dd><p><a href="C_005fASSOCIATED.html#C_005fASSOCIATED">C_ASSOCIATED</a>, <a href="C_005fLOC.html#C_005fLOC">C_LOC</a>, <a href="C_005fF_005fPOINTER.html#C_005fF_005fPOINTER">C_F_POINTER</a>, <a href="C_005fF_005fPROCPOINTER.html#C_005fF_005fPROCPOINTER">C_F_PROCPOINTER</a>
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