109 lines
5.5 KiB
HTML
109 lines
5.5 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- This manual is for FFTW
|
|
(version 3.3.10, 10 December 2020).
|
|
|
|
Copyright (C) 2003 Matteo Frigo.
|
|
|
|
Copyright (C) 2003 Massachusetts Institute of Technology.
|
|
|
|
Permission is granted to make and distribute verbatim copies of this
|
|
manual provided the copyright notice and this permission notice are
|
|
preserved on all copies.
|
|
|
|
Permission is granted to copy and distribute modified versions of this
|
|
manual under the conditions for verbatim copying, provided that the
|
|
entire resulting derived work is distributed under the terms of a
|
|
permission notice identical to this one.
|
|
|
|
Permission is granted to copy and distribute translations of this manual
|
|
into another language, under the above conditions for modified versions,
|
|
except that this permission notice may be stated in a translation
|
|
approved by the Free Software Foundation. -->
|
|
<!-- Created by GNU Texinfo 6.7, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<title>Calling FFTW from Modern Fortran (FFTW 3.3.10)</title>
|
|
|
|
<meta name="description" content="Calling FFTW from Modern Fortran (FFTW 3.3.10)">
|
|
<meta name="keywords" content="Calling FFTW from Modern Fortran (FFTW 3.3.10)">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<link href="index.html" rel="start" title="Top">
|
|
<link href="Concept-Index.html" rel="index" title="Concept Index">
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="index.html" rel="up" title="Top">
|
|
<link href="Overview-of-Fortran-interface.html" rel="next" title="Overview of Fortran interface">
|
|
<link href="FFTW-MPI-Fortran-Interface.html" rel="prev" title="FFTW MPI Fortran Interface">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.indentedblock {margin-right: 0em}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.lisp {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}
|
|
span.nolinebreak {white-space: nowrap}
|
|
span.roman {font-family: initial; font-weight: normal}
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en">
|
|
<span id="Calling-FFTW-from-Modern-Fortran"></span><div class="header">
|
|
<p>
|
|
Next: <a href="Calling-FFTW-from-Legacy-Fortran.html" accesskey="n" rel="next">Calling FFTW from Legacy Fortran</a>, Previous: <a href="Distributed_002dmemory-FFTW-with-MPI.html" accesskey="p" rel="prev">Distributed-memory FFTW with MPI</a>, Up: <a href="index.html" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
<hr>
|
|
<span id="Calling-FFTW-from-Modern-Fortran-1"></span><h2 class="chapter">7 Calling FFTW from Modern Fortran</h2>
|
|
<span id="index-Fortran-interface-2"></span>
|
|
|
|
<p>Fortran 2003 standardized ways for Fortran code to call C libraries,
|
|
and this allows us to support a direct translation of the FFTW C API
|
|
into Fortran. Compared to the legacy Fortran 77 interface
|
|
(see <a href="Calling-FFTW-from-Legacy-Fortran.html">Calling FFTW from Legacy Fortran</a>), this direct interface
|
|
offers many advantages, especially compile-time type-checking and
|
|
aligned memory allocation. As of this writing, support for these C
|
|
interoperability features seems widespread, having been implemented in
|
|
nearly all major Fortran compilers (e.g. GNU, Intel, IBM,
|
|
Oracle/Solaris, Portland Group, NAG).
|
|
<span id="index-portability-4"></span>
|
|
</p>
|
|
<p>This chapter documents that interface. For the most part, since this
|
|
interface allows Fortran to call the C interface directly, the usage
|
|
is identical to C translated to Fortran syntax. However, there are a
|
|
few subtle points such as memory allocation, wisdom, and data types
|
|
that deserve closer attention.
|
|
</p>
|
|
<table class="menu" border="0" cellspacing="0">
|
|
<tr><td align="left" valign="top">• <a href="Overview-of-Fortran-interface.html" accesskey="1">Overview of Fortran interface</a></td><td> </td><td align="left" valign="top">
|
|
</td></tr>
|
|
<tr><td align="left" valign="top">• <a href="Reversing-array-dimensions.html" accesskey="2">Reversing array dimensions</a></td><td> </td><td align="left" valign="top">
|
|
</td></tr>
|
|
<tr><td align="left" valign="top">• <a href="FFTW-Fortran-type-reference.html" accesskey="3">FFTW Fortran type reference</a></td><td> </td><td align="left" valign="top">
|
|
</td></tr>
|
|
<tr><td align="left" valign="top">• <a href="Plan-execution-in-Fortran.html" accesskey="4">Plan execution in Fortran</a></td><td> </td><td align="left" valign="top">
|
|
</td></tr>
|
|
<tr><td align="left" valign="top">• <a href="Allocating-aligned-memory-in-Fortran.html" accesskey="5">Allocating aligned memory in Fortran</a></td><td> </td><td align="left" valign="top">
|
|
</td></tr>
|
|
<tr><td align="left" valign="top">• <a href="Accessing-the-wisdom-API-from-Fortran.html" accesskey="6">Accessing the wisdom API from Fortran</a></td><td> </td><td align="left" valign="top">
|
|
</td></tr>
|
|
<tr><td align="left" valign="top">• <a href="Defining-an-FFTW-module.html" accesskey="7">Defining an FFTW module</a></td><td> </td><td align="left" valign="top">
|
|
</td></tr>
|
|
</table>
|
|
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|