<html lang="en"> <head> <title>C_FUNLOC - The GNU Fortran Compiler</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="The GNU Fortran Compiler"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Intrinsic-Procedures.html#Intrinsic-Procedures" title="Intrinsic Procedures"> <link rel="prev" href="C_005fF_005fPROCPOINTER.html#C_005fF_005fPROCPOINTER" title="C_F_PROCPOINTER"> <link rel="next" href="C_005fLOC.html#C_005fLOC" title="C_LOC"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with the Invariant Sections being ``Funding Free Software'', the Front-Cover Texts being (a) (see below), and with the Back-Cover Texts being (b) (see below). A copy of the license is included in the section entitled ``GNU Free Documentation License''. (a) The FSF's Front-Cover Text is: A GNU Manual (b) The FSF's Back-Cover Text is: You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by the Free Software Foundation raise funds for GNU development.--> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="C_FUNLOC"></a> <a name="C_005fFUNLOC"></a> <p> Next: <a rel="next" accesskey="n" href="C_005fLOC.html#C_005fLOC">C_LOC</a>, Previous: <a rel="previous" accesskey="p" href="C_005fF_005fPROCPOINTER.html#C_005fF_005fPROCPOINTER">C_F_PROCPOINTER</a>, Up: <a rel="up" accesskey="u" href="Intrinsic-Procedures.html#Intrinsic-Procedures">Intrinsic Procedures</a> <hr> </div> <h3 class="section">8.37 <code>C_FUNLOC</code> — Obtain the C address of a procedure</h3> <p><a name="index-C_005fFUNLOC-471"></a><a name="index-pointer_002c-C-address-of-procedures-472"></a> <dl> <dt><em>Description</em>:<dd><code>C_FUNLOC(x)</code> determines the C address of the argument. <br><dt><em>Standard</em>:<dd>Fortran 2003 and later <br><dt><em>Class</em>:<dd>Inquiry function <br><dt><em>Syntax</em>:<dd><code>RESULT = C_FUNLOC(x)</code> <br><dt><em>Arguments</em>:<dd> <p><table summary=""><tr align="left"><td valign="top" width="15%"><var>x</var> </td><td valign="top" width="70%">Interoperable function or pointer to such function. <br></td></tr></table> <br><dt><em>Return value</em>:<dd>The return value is of type <code>C_FUNPTR</code> and contains the C address of the argument. <br><dt><em>Example</em>:<dd> <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> <br><dt><em>See also</em>:<dd><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> </dl> </body></html>