Mercurial > hg > sv-dependency-builds
diff src/fftw-3.3.8/doc/html/Calling-FFTW-from-Legacy-Fortran.html @ 167:bd3cc4d1df30
Add FFTW 3.3.8 source, and a Linux build
| author | Chris Cannam <cannam@all-day-breakfast.com> |
|---|---|
| date | Tue, 19 Nov 2019 14:52:55 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/fftw-3.3.8/doc/html/Calling-FFTW-from-Legacy-Fortran.html Tue Nov 19 14:52:55 2019 +0000 @@ -0,0 +1,126 @@ +<!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 3.3.8, 24 May 2018). + +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 6.3, http://www.gnu.org/software/texinfo/ --> +<head> +<title>FFTW 3.3.8: Calling FFTW from Legacy Fortran</title> + +<meta name="description" content="FFTW 3.3.8: Calling FFTW from Legacy Fortran"> +<meta name="keywords" content="FFTW 3.3.8: Calling FFTW from Legacy Fortran"> +<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="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="index.html#Top" rel="up" title="Top"> +<link href="Fortran_002dinterface-routines.html#Fortran_002dinterface-routines" rel="next" title="Fortran-interface routines"> +<link href="Defining-an-FFTW-module.html#Defining-an-FFTW-module" rel="prev" title="Defining an FFTW module"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.indentedblock {margin-right: 0em} +blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +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.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"> +<a name="Calling-FFTW-from-Legacy-Fortran"></a> +<div class="header"> +<p> +Next: <a href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2" accesskey="n" rel="next">Upgrading from FFTW version 2</a>, Previous: <a href="Calling-FFTW-from-Modern-Fortran.html#Calling-FFTW-from-Modern-Fortran" accesskey="p" rel="prev">Calling FFTW from Modern Fortran</a>, Up: <a href="index.html#Top" 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#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Calling-FFTW-from-Legacy-Fortran-1"></a> +<h2 class="chapter">8 Calling FFTW from Legacy Fortran</h2> +<a name="index-Fortran-interface-3"></a> + +<p>This chapter describes the interface to FFTW callable by Fortran code +in older compilers not supporting the Fortran 2003 C interoperability +features (see <a href="Calling-FFTW-from-Modern-Fortran.html#Calling-FFTW-from-Modern-Fortran">Calling FFTW from Modern Fortran</a>). This interface +has the major disadvantage that it is not type-checked, so if you +mistake the argument types or ordering then your program will not have +any compiler errors, and will likely crash at runtime. So, greater +care is needed. Also, technically interfacing older Fortran versions +to C is nonstandard, but in practice we have found that the techniques +used in this chapter have worked with all known Fortran compilers for +many years. +</p> +<p>The legacy Fortran interface differs from the C interface only in the +prefix (‘<samp>dfftw_</samp>’ instead of ‘<samp>fftw_</samp>’ in double precision) and +a few other minor details. This Fortran interface is included in the +FFTW libraries by default, unless a Fortran compiler isn’t found on +your system or <code>--disable-fortran</code> is included in the +<code>configure</code> flags. We assume here that the reader is already +familiar with the usage of FFTW in C, as described elsewhere in this +manual. +</p> +<p>The MPI parallel interface to FFTW is <em>not</em> currently available +to legacy Fortran. +</p> +<table class="menu" border="0" cellspacing="0"> +<tr><td align="left" valign="top">• <a href="Fortran_002dinterface-routines.html#Fortran_002dinterface-routines" accesskey="1">Fortran-interface routines</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="FFTW-Constants-in-Fortran.html#FFTW-Constants-in-Fortran" accesskey="2">FFTW Constants in Fortran</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="FFTW-Execution-in-Fortran.html#FFTW-Execution-in-Fortran" accesskey="3">FFTW Execution in Fortran</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Fortran-Examples.html#Fortran-Examples" accesskey="4">Fortran Examples</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +<tr><td align="left" valign="top">• <a href="Wisdom-of-Fortran_003f.html#Wisdom-of-Fortran_003f" accesskey="5">Wisdom of Fortran?</a>:</td><td> </td><td align="left" valign="top"> +</td></tr> +</table> + +<hr> +<div class="header"> +<p> +Next: <a href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2" accesskey="n" rel="next">Upgrading from FFTW version 2</a>, Previous: <a href="Calling-FFTW-from-Modern-Fortran.html#Calling-FFTW-from-Modern-Fortran" accesskey="p" rel="prev">Calling FFTW from Modern Fortran</a>, Up: <a href="index.html#Top" 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#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html>