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diff --git a/share/doc/gfortran/C_005fF_005fPROCPOINTER.html b/share/doc/gfortran/C_005fF_005fPROCPOINTER.html new file mode 100644 index 0000000..eb2c7cc --- /dev/null +++ b/share/doc/gfortran/C_005fF_005fPROCPOINTER.html @@ -0,0 +1,146 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1999-2023 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). 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Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>The GNU Fortran Compiler: C_F_PROCPOINTER</title> + +<meta name="description" content="The GNU Fortran Compiler: C_F_PROCPOINTER"> +<meta name="keywords" content="The GNU Fortran Compiler: C_F_PROCPOINTER"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Option-Index.html#Option-Index" rel="index" title="Option Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Intrinsic-Procedures.html#Intrinsic-Procedures" rel="up" title="Intrinsic Procedures"> +<link href="C_005fFUNLOC.html#C_005fFUNLOC" rel="next" title="C_FUNLOC"> +<link href="C_005fF_005fPOINTER.html#C_005fF_005fPOINTER" rel="previous" title="C_F_POINTER"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="C_005fF_005fPROCPOINTER"></a> +<div class="header"> +<p> +Next: <a href="C_005fFUNLOC.html#C_005fFUNLOC" accesskey="n" rel="next">C_FUNLOC</a>, Previous: <a href="C_005fF_005fPOINTER.html#C_005fF_005fPOINTER" accesskey="p" rel="previous">C_F_POINTER</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="C_005fF_005fPROCPOINTER-_002d_002d_002d-Convert-C-into-Fortran-procedure-pointer"></a> +<h3 class="section">8.54 <code>C_F_PROCPOINTER</code> — Convert C into Fortran procedure pointer</h3> +<a name="index-C_005fF_005fPROCPOINTER"></a> +<a name="index-pointer_002c-C-address-of-pointers"></a> + +<dl compact="compact"> +<dt><em>Description</em>:</dt> +<dd><p><code>C_F_PROCPOINTER(CPTR, FPTR)</code> Assign the target of the C function pointer +<var>CPTR</var> to the Fortran procedure pointer <var>FPTR</var>. +</p> +</dd> +<dt><em>Standard</em>:</dt> +<dd><p>Fortran 2003 and later +</p> +</dd> +<dt><em>Class</em>:</dt> +<dd><p>Subroutine +</p> +</dd> +<dt><em>Syntax</em>:</dt> +<dd><p><code>CALL C_F_PROCPOINTER(cptr, fptr)</code> +</p> +</dd> +<dt><em>Arguments</em>:</dt> +<dd><table> +<tr><td width="15%"><var>CPTR</var></td><td width="70%">scalar of the type <code>C_FUNPTR</code>. It is +<code>INTENT(IN)</code>.</td></tr> +<tr><td width="15%"><var>FPTR</var></td><td width="70%">procedure pointer interoperable with <var>cptr</var>. It is +<code>INTENT(OUT)</code>.</td></tr> +</table> + +</dd> +<dt><em>Example</em>:</dt> +<dd><div class="smallexample"> +<pre class="smallexample">program main + use iso_c_binding + implicit none + abstract interface + function func(a) + import :: c_float + real(c_float), intent(in) :: a + real(c_float) :: func + end function + end interface + interface + function getIterFunc() bind(c,name="getIterFunc") + import :: c_funptr + type(c_funptr) :: getIterFunc + end function + end interface + type(c_funptr) :: cfunptr + procedure(func), pointer :: myFunc + cfunptr = getIterFunc() + call c_f_procpointer(cfunptr, myFunc) +end program main +</pre></div> + +</dd> +<dt><em>See also</em>:</dt> +<dd><p><a href="C_005fLOC.html#C_005fLOC">C_LOC</a>, <br> +<a href="C_005fF_005fPOINTER.html#C_005fF_005fPOINTER">C_F_POINTER</a> +</p></dd> +</dl> + + + + + +</body> +</html> |