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| author | Chris Cannam |
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| date | Wed, 20 Mar 2013 15:35:50 +0000 |
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| 9:c0fb53affa76 | 10:37bf6b4a2645 |
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| 1 <html lang="en"> | |
| 2 <head> | |
| 3 <title>Calling FFTW from Modern Fortran - FFTW 3.3.3</title> | |
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| 5 <meta name="description" content="FFTW 3.3.3"> | |
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| 9 <link rel="next" href="Calling-FFTW-from-Legacy-Fortran.html#Calling-FFTW-from-Legacy-Fortran" title="Calling FFTW from Legacy Fortran"> | |
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| 11 <!-- | |
| 12 This manual is for FFTW | |
| 13 (version 3.3.3, 25 November 2012). | |
| 14 | |
| 15 Copyright (C) 2003 Matteo Frigo. | |
| 16 | |
| 17 Copyright (C) 2003 Massachusetts Institute of Technology. | |
| 18 | |
| 19 Permission is granted to make and distribute verbatim copies of | |
| 20 this manual provided the copyright notice and this permission | |
| 21 notice are preserved on all copies. | |
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| 23 Permission is granted to copy and distribute modified versions of | |
| 24 this manual under the conditions for verbatim copying, provided | |
| 25 that the entire resulting derived work is distributed under the | |
| 26 terms of a permission notice identical to this one. | |
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| 28 Permission is granted to copy and distribute translations of this | |
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| 48 <a name="Calling-FFTW-from-Modern-Fortran"></a> | |
| 49 <p> | |
| 50 Next: <a rel="next" accesskey="n" href="Calling-FFTW-from-Legacy-Fortran.html#Calling-FFTW-from-Legacy-Fortran">Calling FFTW from Legacy Fortran</a>, | |
| 51 Previous: <a rel="previous" accesskey="p" href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI">Distributed-memory FFTW with MPI</a>, | |
| 52 Up: <a rel="up" accesskey="u" href="index.html#Top">Top</a> | |
| 53 <hr> | |
| 54 </div> | |
| 55 | |
| 56 <h2 class="chapter">7 Calling FFTW from Modern Fortran</h2> | |
| 57 | |
| 58 <p><a name="index-Fortran-interface-500"></a> | |
| 59 Fortran 2003 standardized ways for Fortran code to call C libraries, | |
| 60 and this allows us to support a direct translation of the FFTW C API | |
| 61 into Fortran. Compared to the legacy Fortran 77 interface | |
| 62 (see <a href="Calling-FFTW-from-Legacy-Fortran.html#Calling-FFTW-from-Legacy-Fortran">Calling FFTW from Legacy Fortran</a>), this direct interface | |
| 63 offers many advantages, especially compile-time type-checking and | |
| 64 aligned memory allocation. As of this writing, support for these C | |
| 65 interoperability features seems widespread, having been implemented in | |
| 66 nearly all major Fortran compilers (e.g. GNU, Intel, IBM, | |
| 67 Oracle/Solaris, Portland Group, NAG). | |
| 68 <a name="index-portability-501"></a> | |
| 69 This chapter documents that interface. For the most part, since this | |
| 70 interface allows Fortran to call the C interface directly, the usage | |
| 71 is identical to C translated to Fortran syntax. However, there are a | |
| 72 few subtle points such as memory allocation, wisdom, and data types | |
| 73 that deserve closer attention. | |
| 74 | |
| 75 <ul class="menu"> | |
| 76 <li><a accesskey="1" href="Overview-of-Fortran-interface.html#Overview-of-Fortran-interface">Overview of Fortran interface</a> | |
| 77 <li><a accesskey="2" href="Reversing-array-dimensions.html#Reversing-array-dimensions">Reversing array dimensions</a> | |
| 78 <li><a accesskey="3" href="FFTW-Fortran-type-reference.html#FFTW-Fortran-type-reference">FFTW Fortran type reference</a> | |
| 79 <li><a accesskey="4" href="Plan-execution-in-Fortran.html#Plan-execution-in-Fortran">Plan execution in Fortran</a> | |
| 80 <li><a accesskey="5" href="Allocating-aligned-memory-in-Fortran.html#Allocating-aligned-memory-in-Fortran">Allocating aligned memory in Fortran</a> | |
| 81 <li><a accesskey="6" href="Accessing-the-wisdom-API-from-Fortran.html#Accessing-the-wisdom-API-from-Fortran">Accessing the wisdom API from Fortran</a> | |
| 82 <li><a accesskey="7" href="Defining-an-FFTW-module.html#Defining-an-FFTW-module">Defining an FFTW module</a> | |
| 83 </ul> | |
| 84 | |
| 85 <!-- --> | |
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| 87 |