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author Chris Cannam <cannam@all-day-breakfast.com>
date Mon, 02 Mar 2020 14:03:47 +0000
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cannam@127 3 <!-- This manual is for FFTW
cannam@127 4 (version 3.3.5, 30 July 2016).
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cannam@127 6 Copyright (C) 2003 Matteo Frigo.
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cannam@127 24 <head>
cannam@127 25 <title>FFTW 3.3.5: Top</title>
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cannam@127 70 <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
cannam@127 71 <h1 class="settitle" align="center">FFTW 3.3.5</h1>
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cannam@127 94
cannam@127 95 <a name="SEC_Contents"></a>
cannam@127 96 <h2 class="contents-heading">Table of Contents</h2>
cannam@127 97
cannam@127 98 <div class="contents">
cannam@127 99
cannam@127 100 <ul class="no-bullet">
cannam@127 101 <li><a name="toc-Introduction-1" href="Introduction.html#Introduction">1 Introduction</a></li>
cannam@127 102 <li><a name="toc-Tutorial-1" href="Tutorial.html#Tutorial">2 Tutorial</a>
cannam@127 103 <ul class="no-bullet">
cannam@127 104 <li><a name="toc-Complex-One_002dDimensional-DFTs-1" href="Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs">2.1 Complex One-Dimensional DFTs</a></li>
cannam@127 105 <li><a name="toc-Complex-Multi_002dDimensional-DFTs-1" href="Complex-Multi_002dDimensional-DFTs.html#Complex-Multi_002dDimensional-DFTs">2.2 Complex Multi-Dimensional DFTs</a></li>
cannam@127 106 <li><a name="toc-One_002dDimensional-DFTs-of-Real-Data-1" href="One_002dDimensional-DFTs-of-Real-Data.html#One_002dDimensional-DFTs-of-Real-Data">2.3 One-Dimensional DFTs of Real Data</a></li>
cannam@127 107 <li><a name="toc-Multi_002dDimensional-DFTs-of-Real-Data-1" href="Multi_002dDimensional-DFTs-of-Real-Data.html#Multi_002dDimensional-DFTs-of-Real-Data">2.4 Multi-Dimensional DFTs of Real Data</a></li>
cannam@127 108 <li><a name="toc-More-DFTs-of-Real-Data-1" href="More-DFTs-of-Real-Data.html#More-DFTs-of-Real-Data">2.5 More DFTs of Real Data</a>
cannam@127 109 <ul class="no-bullet">
cannam@127 110 <li><a name="toc-The-Halfcomplex_002dformat-DFT-1" href="The-Halfcomplex_002dformat-DFT.html#The-Halfcomplex_002dformat-DFT">2.5.1 The Halfcomplex-format DFT</a></li>
cannam@127 111 <li><a name="toc-Real-even_002fodd-DFTs-_0028cosine_002fsine-transforms_0029-1" href="Real-even_002fodd-DFTs-_0028cosine_002fsine-transforms_0029.html#Real-even_002fodd-DFTs-_0028cosine_002fsine-transforms_0029">2.5.2 Real even/odd DFTs (cosine/sine transforms)</a></li>
cannam@127 112 <li><a name="toc-The-Discrete-Hartley-Transform-1" href="The-Discrete-Hartley-Transform.html#The-Discrete-Hartley-Transform">2.5.3 The Discrete Hartley Transform</a></li>
cannam@127 113 </ul></li>
cannam@127 114 </ul></li>
cannam@127 115 <li><a name="toc-Other-Important-Topics-1" href="Other-Important-Topics.html#Other-Important-Topics">3 Other Important Topics</a>
cannam@127 116 <ul class="no-bullet">
cannam@127 117 <li><a name="toc-SIMD-alignment-and-fftw_005fmalloc-1" href="SIMD-alignment-and-fftw_005fmalloc.html#SIMD-alignment-and-fftw_005fmalloc">3.1 SIMD alignment and fftw_malloc</a></li>
cannam@127 118 <li><a name="toc-Multi_002ddimensional-Array-Format-1" href="Multi_002ddimensional-Array-Format.html#Multi_002ddimensional-Array-Format">3.2 Multi-dimensional Array Format</a>
cannam@127 119 <ul class="no-bullet">
cannam@127 120 <li><a name="toc-Row_002dmajor-Format-1" href="Row_002dmajor-Format.html#Row_002dmajor-Format">3.2.1 Row-major Format</a></li>
cannam@127 121 <li><a name="toc-Column_002dmajor-Format-1" href="Column_002dmajor-Format.html#Column_002dmajor-Format">3.2.2 Column-major Format</a></li>
cannam@127 122 <li><a name="toc-Fixed_002dsize-Arrays-in-C-1" href="Fixed_002dsize-Arrays-in-C.html#Fixed_002dsize-Arrays-in-C">3.2.3 Fixed-size Arrays in C</a></li>
cannam@127 123 <li><a name="toc-Dynamic-Arrays-in-C-1" href="Dynamic-Arrays-in-C.html#Dynamic-Arrays-in-C">3.2.4 Dynamic Arrays in C</a></li>
cannam@127 124 <li><a name="toc-Dynamic-Arrays-in-C_002d_002d_002dThe-Wrong-Way" href="Dynamic-Arrays-in-C_002dThe-Wrong-Way.html#Dynamic-Arrays-in-C_002dThe-Wrong-Way">3.2.5 Dynamic Arrays in C&mdash;The Wrong Way</a></li>
cannam@127 125 </ul></li>
cannam@127 126 <li><a name="toc-Words-of-Wisdom_002d_002d_002dSaving-Plans" href="Words-of-Wisdom_002dSaving-Plans.html#Words-of-Wisdom_002dSaving-Plans">3.3 Words of Wisdom&mdash;Saving Plans</a></li>
cannam@127 127 <li><a name="toc-Caveats-in-Using-Wisdom-1" href="Caveats-in-Using-Wisdom.html#Caveats-in-Using-Wisdom">3.4 Caveats in Using Wisdom</a></li>
cannam@127 128 </ul></li>
cannam@127 129 <li><a name="toc-FFTW-Reference-1" href="FFTW-Reference.html#FFTW-Reference">4 FFTW Reference</a>
cannam@127 130 <ul class="no-bullet">
cannam@127 131 <li><a name="toc-Data-Types-and-Files-1" href="Data-Types-and-Files.html#Data-Types-and-Files">4.1 Data Types and Files</a>
cannam@127 132 <ul class="no-bullet">
cannam@127 133 <li><a name="toc-Complex-numbers-1" href="Complex-numbers.html#Complex-numbers">4.1.1 Complex numbers</a></li>
cannam@127 134 <li><a name="toc-Precision-1" href="Precision.html#Precision">4.1.2 Precision</a></li>
cannam@127 135 <li><a name="toc-Memory-Allocation-1" href="Memory-Allocation.html#Memory-Allocation">4.1.3 Memory Allocation</a></li>
cannam@127 136 </ul></li>
cannam@127 137 <li><a name="toc-Using-Plans-1" href="Using-Plans.html#Using-Plans">4.2 Using Plans</a></li>
cannam@127 138 <li><a name="toc-Basic-Interface-1" href="Basic-Interface.html#Basic-Interface">4.3 Basic Interface</a>
cannam@127 139 <ul class="no-bullet">
cannam@127 140 <li><a name="toc-Complex-DFTs-1" href="Complex-DFTs.html#Complex-DFTs">4.3.1 Complex DFTs</a></li>
cannam@127 141 <li><a name="toc-Planner-Flags-1" href="Planner-Flags.html#Planner-Flags">4.3.2 Planner Flags</a></li>
cannam@127 142 <li><a name="toc-Real_002ddata-DFTs-1" href="Real_002ddata-DFTs.html#Real_002ddata-DFTs">4.3.3 Real-data DFTs</a></li>
cannam@127 143 <li><a name="toc-Real_002ddata-DFT-Array-Format-1" href="Real_002ddata-DFT-Array-Format.html#Real_002ddata-DFT-Array-Format">4.3.4 Real-data DFT Array Format</a></li>
cannam@127 144 <li><a name="toc-Real_002dto_002dReal-Transforms-1" href="Real_002dto_002dReal-Transforms.html#Real_002dto_002dReal-Transforms">4.3.5 Real-to-Real Transforms</a></li>
cannam@127 145 <li><a name="toc-Real_002dto_002dReal-Transform-Kinds-1" href="Real_002dto_002dReal-Transform-Kinds.html#Real_002dto_002dReal-Transform-Kinds">4.3.6 Real-to-Real Transform Kinds</a></li>
cannam@127 146 </ul></li>
cannam@127 147 <li><a name="toc-Advanced-Interface-1" href="Advanced-Interface.html#Advanced-Interface">4.4 Advanced Interface</a>
cannam@127 148 <ul class="no-bullet">
cannam@127 149 <li><a name="toc-Advanced-Complex-DFTs-1" href="Advanced-Complex-DFTs.html#Advanced-Complex-DFTs">4.4.1 Advanced Complex DFTs</a></li>
cannam@127 150 <li><a name="toc-Advanced-Real_002ddata-DFTs-1" href="Advanced-Real_002ddata-DFTs.html#Advanced-Real_002ddata-DFTs">4.4.2 Advanced Real-data DFTs</a></li>
cannam@127 151 <li><a name="toc-Advanced-Real_002dto_002dreal-Transforms-1" href="Advanced-Real_002dto_002dreal-Transforms.html#Advanced-Real_002dto_002dreal-Transforms">4.4.3 Advanced Real-to-real Transforms</a></li>
cannam@127 152 </ul></li>
cannam@127 153 <li><a name="toc-Guru-Interface-1" href="Guru-Interface.html#Guru-Interface">4.5 Guru Interface</a>
cannam@127 154 <ul class="no-bullet">
cannam@127 155 <li><a name="toc-Interleaved-and-split-arrays-1" href="Interleaved-and-split-arrays.html#Interleaved-and-split-arrays">4.5.1 Interleaved and split arrays</a></li>
cannam@127 156 <li><a name="toc-Guru-vector-and-transform-sizes-1" href="Guru-vector-and-transform-sizes.html#Guru-vector-and-transform-sizes">4.5.2 Guru vector and transform sizes</a></li>
cannam@127 157 <li><a name="toc-Guru-Complex-DFTs-1" href="Guru-Complex-DFTs.html#Guru-Complex-DFTs">4.5.3 Guru Complex DFTs</a></li>
cannam@127 158 <li><a name="toc-Guru-Real_002ddata-DFTs-1" href="Guru-Real_002ddata-DFTs.html#Guru-Real_002ddata-DFTs">4.5.4 Guru Real-data DFTs</a></li>
cannam@127 159 <li><a name="toc-Guru-Real_002dto_002dreal-Transforms-1" href="Guru-Real_002dto_002dreal-Transforms.html#Guru-Real_002dto_002dreal-Transforms">4.5.5 Guru Real-to-real Transforms</a></li>
cannam@127 160 <li><a name="toc-64_002dbit-Guru-Interface-1" href="64_002dbit-Guru-Interface.html#g_t64_002dbit-Guru-Interface">4.5.6 64-bit Guru Interface</a></li>
cannam@127 161 </ul></li>
cannam@127 162 <li><a name="toc-New_002darray-Execute-Functions-1" href="New_002darray-Execute-Functions.html#New_002darray-Execute-Functions">4.6 New-array Execute Functions</a></li>
cannam@127 163 <li><a name="toc-Wisdom-1" href="Wisdom.html#Wisdom">4.7 Wisdom</a>
cannam@127 164 <ul class="no-bullet">
cannam@127 165 <li><a name="toc-Wisdom-Export-1" href="Wisdom-Export.html#Wisdom-Export">4.7.1 Wisdom Export</a></li>
cannam@127 166 <li><a name="toc-Wisdom-Import-1" href="Wisdom-Import.html#Wisdom-Import">4.7.2 Wisdom Import</a></li>
cannam@127 167 <li><a name="toc-Forgetting-Wisdom-1" href="Forgetting-Wisdom.html#Forgetting-Wisdom">4.7.3 Forgetting Wisdom</a></li>
cannam@127 168 <li><a name="toc-Wisdom-Utilities-1" href="Wisdom-Utilities.html#Wisdom-Utilities">4.7.4 Wisdom Utilities</a></li>
cannam@127 169 </ul></li>
cannam@127 170 <li><a name="toc-What-FFTW-Really-Computes-1" href="What-FFTW-Really-Computes.html#What-FFTW-Really-Computes">4.8 What FFTW Really Computes</a>
cannam@127 171 <ul class="no-bullet">
cannam@127 172 <li><a name="toc-The-1d-Discrete-Fourier-Transform-_0028DFT_0029-1" href="The-1d-Discrete-Fourier-Transform-_0028DFT_0029.html#The-1d-Discrete-Fourier-Transform-_0028DFT_0029">4.8.1 The 1d Discrete Fourier Transform (DFT)</a></li>
cannam@127 173 <li><a name="toc-The-1d-Real_002ddata-DFT-1" href="The-1d-Real_002ddata-DFT.html#The-1d-Real_002ddata-DFT">4.8.2 The 1d Real-data DFT</a></li>
cannam@127 174 <li><a name="toc-1d-Real_002deven-DFTs-_0028DCTs_0029-1" href="1d-Real_002deven-DFTs-_0028DCTs_0029.html#g_t1d-Real_002deven-DFTs-_0028DCTs_0029">4.8.3 1d Real-even DFTs (DCTs)</a></li>
cannam@127 175 <li><a name="toc-1d-Real_002dodd-DFTs-_0028DSTs_0029-1" href="1d-Real_002dodd-DFTs-_0028DSTs_0029.html#g_t1d-Real_002dodd-DFTs-_0028DSTs_0029">4.8.4 1d Real-odd DFTs (DSTs)</a></li>
cannam@127 176 <li><a name="toc-1d-Discrete-Hartley-Transforms-_0028DHTs_0029-1" href="1d-Discrete-Hartley-Transforms-_0028DHTs_0029.html#g_t1d-Discrete-Hartley-Transforms-_0028DHTs_0029">4.8.5 1d Discrete Hartley Transforms (DHTs)</a></li>
cannam@127 177 <li><a name="toc-Multi_002ddimensional-Transforms-1" href="Multi_002ddimensional-Transforms.html#Multi_002ddimensional-Transforms">4.8.6 Multi-dimensional Transforms</a></li>
cannam@127 178 </ul></li>
cannam@127 179 </ul></li>
cannam@127 180 <li><a name="toc-Multi_002dthreaded-FFTW-1" href="Multi_002dthreaded-FFTW.html#Multi_002dthreaded-FFTW">5 Multi-threaded FFTW</a>
cannam@127 181 <ul class="no-bullet">
cannam@127 182 <li><a name="toc-Installation-and-Supported-Hardware_002fSoftware-1" href="Installation-and-Supported-Hardware_002fSoftware.html#Installation-and-Supported-Hardware_002fSoftware">5.1 Installation and Supported Hardware/Software</a></li>
cannam@127 183 <li><a name="toc-Usage-of-Multi_002dthreaded-FFTW-1" href="Usage-of-Multi_002dthreaded-FFTW.html#Usage-of-Multi_002dthreaded-FFTW">5.2 Usage of Multi-threaded FFTW</a></li>
cannam@127 184 <li><a name="toc-How-Many-Threads-to-Use_003f-1" href="How-Many-Threads-to-Use_003f.html#How-Many-Threads-to-Use_003f">5.3 How Many Threads to Use?</a></li>
cannam@127 185 <li><a name="toc-Thread-safety-1" href="Thread-safety.html#Thread-safety">5.4 Thread safety</a></li>
cannam@127 186 </ul></li>
cannam@127 187 <li><a name="toc-Distributed_002dmemory-FFTW-with-MPI-1" href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI">6 Distributed-memory FFTW with MPI</a>
cannam@127 188 <ul class="no-bullet">
cannam@127 189 <li><a name="toc-FFTW-MPI-Installation-1" href="FFTW-MPI-Installation.html#FFTW-MPI-Installation">6.1 FFTW MPI Installation</a></li>
cannam@127 190 <li><a name="toc-Linking-and-Initializing-MPI-FFTW-1" href="Linking-and-Initializing-MPI-FFTW.html#Linking-and-Initializing-MPI-FFTW">6.2 Linking and Initializing MPI FFTW</a></li>
cannam@127 191 <li><a name="toc-2d-MPI-example-1" href="2d-MPI-example.html#g_t2d-MPI-example">6.3 2d MPI example</a></li>
cannam@127 192 <li><a name="toc-MPI-Data-Distribution-1" href="MPI-Data-Distribution.html#MPI-Data-Distribution">6.4 MPI Data Distribution</a>
cannam@127 193 <ul class="no-bullet">
cannam@127 194 <li><a name="toc-Basic-and-advanced-distribution-interfaces-1" href="Basic-and-advanced-distribution-interfaces.html#Basic-and-advanced-distribution-interfaces">6.4.1 Basic and advanced distribution interfaces</a></li>
cannam@127 195 <li><a name="toc-Load-balancing-1" href="Load-balancing.html#Load-balancing">6.4.2 Load balancing</a></li>
cannam@127 196 <li><a name="toc-Transposed-distributions-1" href="Transposed-distributions.html#Transposed-distributions">6.4.3 Transposed distributions</a></li>
cannam@127 197 <li><a name="toc-One_002ddimensional-distributions-1" href="One_002ddimensional-distributions.html#One_002ddimensional-distributions">6.4.4 One-dimensional distributions</a></li>
cannam@127 198 </ul></li>
cannam@127 199 <li><a name="toc-Multi_002ddimensional-MPI-DFTs-of-Real-Data-1" href="Multi_002ddimensional-MPI-DFTs-of-Real-Data.html#Multi_002ddimensional-MPI-DFTs-of-Real-Data">6.5 Multi-dimensional MPI DFTs of Real Data</a></li>
cannam@127 200 <li><a name="toc-Other-multi_002ddimensional-Real_002dData-MPI-Transforms" href="Other-Multi_002ddimensional-Real_002ddata-MPI-Transforms.html#Other-Multi_002ddimensional-Real_002ddata-MPI-Transforms">6.6 Other multi-dimensional Real-Data MPI Transforms</a></li>
cannam@127 201 <li><a name="toc-FFTW-MPI-Transposes-1" href="FFTW-MPI-Transposes.html#FFTW-MPI-Transposes">6.7 FFTW MPI Transposes</a>
cannam@127 202 <ul class="no-bullet">
cannam@127 203 <li><a name="toc-Basic-distributed_002dtranspose-interface-1" href="Basic-distributed_002dtranspose-interface.html#Basic-distributed_002dtranspose-interface">6.7.1 Basic distributed-transpose interface</a></li>
cannam@127 204 <li><a name="toc-Advanced-distributed_002dtranspose-interface-1" href="Advanced-distributed_002dtranspose-interface.html#Advanced-distributed_002dtranspose-interface">6.7.2 Advanced distributed-transpose interface</a></li>
cannam@127 205 <li><a name="toc-An-improved-replacement-for-MPI_005fAlltoall-1" href="An-improved-replacement-for-MPI_005fAlltoall.html#An-improved-replacement-for-MPI_005fAlltoall">6.7.3 An improved replacement for MPI_Alltoall</a></li>
cannam@127 206 </ul></li>
cannam@127 207 <li><a name="toc-FFTW-MPI-Wisdom-1" href="FFTW-MPI-Wisdom.html#FFTW-MPI-Wisdom">6.8 FFTW MPI Wisdom</a></li>
cannam@127 208 <li><a name="toc-Avoiding-MPI-Deadlocks-1" href="Avoiding-MPI-Deadlocks.html#Avoiding-MPI-Deadlocks">6.9 Avoiding MPI Deadlocks</a></li>
cannam@127 209 <li><a name="toc-FFTW-MPI-Performance-Tips-1" href="FFTW-MPI-Performance-Tips.html#FFTW-MPI-Performance-Tips">6.10 FFTW MPI Performance Tips</a></li>
cannam@127 210 <li><a name="toc-Combining-MPI-and-Threads-1" href="Combining-MPI-and-Threads.html#Combining-MPI-and-Threads">6.11 Combining MPI and Threads</a></li>
cannam@127 211 <li><a name="toc-FFTW-MPI-Reference-1" href="FFTW-MPI-Reference.html#FFTW-MPI-Reference">6.12 FFTW MPI Reference</a>
cannam@127 212 <ul class="no-bullet">
cannam@127 213 <li><a name="toc-MPI-Files-and-Data-Types-1" href="MPI-Files-and-Data-Types.html#MPI-Files-and-Data-Types">6.12.1 MPI Files and Data Types</a></li>
cannam@127 214 <li><a name="toc-MPI-Initialization-1" href="MPI-Initialization.html#MPI-Initialization">6.12.2 MPI Initialization</a></li>
cannam@127 215 <li><a name="toc-Using-MPI-Plans-1" href="Using-MPI-Plans.html#Using-MPI-Plans">6.12.3 Using MPI Plans</a></li>
cannam@127 216 <li><a name="toc-MPI-Data-Distribution-Functions-1" href="MPI-Data-Distribution-Functions.html#MPI-Data-Distribution-Functions">6.12.4 MPI Data Distribution Functions</a></li>
cannam@127 217 <li><a name="toc-MPI-Plan-Creation-1" href="MPI-Plan-Creation.html#MPI-Plan-Creation">6.12.5 MPI Plan Creation</a></li>
cannam@127 218 <li><a name="toc-MPI-Wisdom-Communication-1" href="MPI-Wisdom-Communication.html#MPI-Wisdom-Communication">6.12.6 MPI Wisdom Communication</a></li>
cannam@127 219 </ul></li>
cannam@127 220 <li><a name="toc-FFTW-MPI-Fortran-Interface-1" href="FFTW-MPI-Fortran-Interface.html#FFTW-MPI-Fortran-Interface">6.13 FFTW MPI Fortran Interface</a></li>
cannam@127 221 </ul></li>
cannam@127 222 <li><a name="toc-Calling-FFTW-from-Modern-Fortran-1" href="Calling-FFTW-from-Modern-Fortran.html#Calling-FFTW-from-Modern-Fortran">7 Calling FFTW from Modern Fortran</a>
cannam@127 223 <ul class="no-bullet">
cannam@127 224 <li><a name="toc-Overview-of-Fortran-interface-1" href="Overview-of-Fortran-interface.html#Overview-of-Fortran-interface">7.1 Overview of Fortran interface</a>
cannam@127 225 <ul class="no-bullet">
cannam@127 226 <li><a name="toc-Extended-and-quadruple-precision-in-Fortran-1" href="Extended-and-quadruple-precision-in-Fortran.html#Extended-and-quadruple-precision-in-Fortran">7.1.1 Extended and quadruple precision in Fortran</a></li>
cannam@127 227 </ul></li>
cannam@127 228 <li><a name="toc-Reversing-array-dimensions-1" href="Reversing-array-dimensions.html#Reversing-array-dimensions">7.2 Reversing array dimensions</a></li>
cannam@127 229 <li><a name="toc-FFTW-Fortran-type-reference-1" href="FFTW-Fortran-type-reference.html#FFTW-Fortran-type-reference">7.3 FFTW Fortran type reference</a></li>
cannam@127 230 <li><a name="toc-Plan-execution-in-Fortran-1" href="Plan-execution-in-Fortran.html#Plan-execution-in-Fortran">7.4 Plan execution in Fortran</a></li>
cannam@127 231 <li><a name="toc-Allocating-aligned-memory-in-Fortran-1" href="Allocating-aligned-memory-in-Fortran.html#Allocating-aligned-memory-in-Fortran">7.5 Allocating aligned memory in Fortran</a></li>
cannam@127 232 <li><a name="toc-Accessing-the-wisdom-API-from-Fortran-1" href="Accessing-the-wisdom-API-from-Fortran.html#Accessing-the-wisdom-API-from-Fortran">7.6 Accessing the wisdom API from Fortran</a>
cannam@127 233 <ul class="no-bullet">
cannam@127 234 <li><a name="toc-Wisdom-File-Export_002fImport-from-Fortran-1" href="Wisdom-File-Export_002fImport-from-Fortran.html#Wisdom-File-Export_002fImport-from-Fortran">7.6.1 Wisdom File Export/Import from Fortran</a></li>
cannam@127 235 <li><a name="toc-Wisdom-String-Export_002fImport-from-Fortran-1" href="Wisdom-String-Export_002fImport-from-Fortran.html#Wisdom-String-Export_002fImport-from-Fortran">7.6.2 Wisdom String Export/Import from Fortran</a></li>
cannam@127 236 <li><a name="toc-Wisdom-Generic-Export_002fImport-from-Fortran-1" href="Wisdom-Generic-Export_002fImport-from-Fortran.html#Wisdom-Generic-Export_002fImport-from-Fortran">7.6.3 Wisdom Generic Export/Import from Fortran</a></li>
cannam@127 237 </ul></li>
cannam@127 238 <li><a name="toc-Defining-an-FFTW-module-1" href="Defining-an-FFTW-module.html#Defining-an-FFTW-module">7.7 Defining an FFTW module</a></li>
cannam@127 239 </ul></li>
cannam@127 240 <li><a name="toc-Calling-FFTW-from-Legacy-Fortran-1" href="Calling-FFTW-from-Legacy-Fortran.html#Calling-FFTW-from-Legacy-Fortran">8 Calling FFTW from Legacy Fortran</a>
cannam@127 241 <ul class="no-bullet">
cannam@127 242 <li><a name="toc-Fortran_002dinterface-routines-1" href="Fortran_002dinterface-routines.html#Fortran_002dinterface-routines">8.1 Fortran-interface routines</a></li>
cannam@127 243 <li><a name="toc-FFTW-Constants-in-Fortran-1" href="FFTW-Constants-in-Fortran.html#FFTW-Constants-in-Fortran">8.2 FFTW Constants in Fortran</a></li>
cannam@127 244 <li><a name="toc-FFTW-Execution-in-Fortran-1" href="FFTW-Execution-in-Fortran.html#FFTW-Execution-in-Fortran">8.3 FFTW Execution in Fortran</a></li>
cannam@127 245 <li><a name="toc-Fortran-Examples-1" href="Fortran-Examples.html#Fortran-Examples">8.4 Fortran Examples</a></li>
cannam@127 246 <li><a name="toc-Wisdom-of-Fortran_003f-1" href="Wisdom-of-Fortran_003f.html#Wisdom-of-Fortran_003f">8.5 Wisdom of Fortran?</a></li>
cannam@127 247 </ul></li>
cannam@127 248 <li><a name="toc-Upgrading-from-FFTW-version-2-1" href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2">9 Upgrading from FFTW version 2</a></li>
cannam@127 249 <li><a name="toc-Installation-and-Customization-1" href="Installation-and-Customization.html#Installation-and-Customization">10 Installation and Customization</a>
cannam@127 250 <ul class="no-bullet">
cannam@127 251 <li><a name="toc-Installation-on-Unix-1" href="Installation-on-Unix.html#Installation-on-Unix">10.1 Installation on Unix</a></li>
cannam@127 252 <li><a name="toc-Installation-on-non_002dUnix-systems-1" href="Installation-on-non_002dUnix-systems.html#Installation-on-non_002dUnix-systems">10.2 Installation on non-Unix systems</a></li>
cannam@127 253 <li><a name="toc-Cycle-Counters-1" href="Cycle-Counters.html#Cycle-Counters">10.3 Cycle Counters</a></li>
cannam@127 254 <li><a name="toc-Generating-your-own-code-1" href="Generating-your-own-code.html#Generating-your-own-code">10.4 Generating your own code</a></li>
cannam@127 255 </ul></li>
cannam@127 256 <li><a name="toc-Acknowledgments-1" href="Acknowledgments.html#Acknowledgments">11 Acknowledgments</a></li>
cannam@127 257 <li><a name="toc-License-and-Copyright-1" href="License-and-Copyright.html#License-and-Copyright">12 License and Copyright</a></li>
cannam@127 258 <li><a name="toc-Concept-Index-1" href="Concept-Index.html#Concept-Index">13 Concept Index</a></li>
cannam@127 259 <li><a name="toc-Library-Index-1" href="Library-Index.html#Library-Index">14 Library Index</a></li>
cannam@127 260 </ul>
cannam@127 261 </div>
cannam@127 262
cannam@127 263
cannam@127 264 <a name="Top"></a>
cannam@127 265 <div class="header">
cannam@127 266 <p>
cannam@127 267 Next: <a href="Introduction.html#Introduction" accesskey="n" rel="next">Introduction</a>, Previous: <a href="../dir/index.html" accesskey="p" rel="prev">(dir)</a>, Up: <a href="../dir/index.html" accesskey="u" rel="up">(dir)</a> &nbsp; [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
cannam@127 268 </div>
cannam@127 269 <hr>
cannam@127 270 <a name="FFTW-User-Manual"></a>
cannam@127 271 <h1 class="top">FFTW User Manual</h1>
cannam@127 272 <p>Welcome to FFTW, the Fastest Fourier Transform in the West. FFTW is a
cannam@127 273 collection of fast C routines to compute the discrete Fourier transform.
cannam@127 274 This manual documents FFTW version 3.3.5.
cannam@127 275 </p>
cannam@127 276 <table class="menu" border="0" cellspacing="0">
cannam@127 277 <tr><td align="left" valign="top">&bull; <a href="Introduction.html#Introduction" accesskey="1">Introduction</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 278 </td></tr>
cannam@127 279 <tr><td align="left" valign="top">&bull; <a href="Tutorial.html#Tutorial" accesskey="2">Tutorial</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 280 </td></tr>
cannam@127 281 <tr><td align="left" valign="top">&bull; <a href="Other-Important-Topics.html#Other-Important-Topics" accesskey="3">Other Important Topics</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 282 </td></tr>
cannam@127 283 <tr><td align="left" valign="top">&bull; <a href="FFTW-Reference.html#FFTW-Reference" accesskey="4">FFTW Reference</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 284 </td></tr>
cannam@127 285 <tr><td align="left" valign="top">&bull; <a href="Multi_002dthreaded-FFTW.html#Multi_002dthreaded-FFTW" accesskey="5">Multi-threaded FFTW</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 286 </td></tr>
cannam@127 287 <tr><td align="left" valign="top">&bull; <a href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI" accesskey="6">Distributed-memory FFTW with MPI</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 288 </td></tr>
cannam@127 289 <tr><td align="left" valign="top">&bull; <a href="Calling-FFTW-from-Modern-Fortran.html#Calling-FFTW-from-Modern-Fortran" accesskey="7">Calling FFTW from Modern Fortran</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 290 </td></tr>
cannam@127 291 <tr><td align="left" valign="top">&bull; <a href="Calling-FFTW-from-Legacy-Fortran.html#Calling-FFTW-from-Legacy-Fortran" accesskey="8">Calling FFTW from Legacy Fortran</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 292 </td></tr>
cannam@127 293 <tr><td align="left" valign="top">&bull; <a href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2" accesskey="9">Upgrading from FFTW version 2</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 294 </td></tr>
cannam@127 295 <tr><td align="left" valign="top">&bull; <a href="Installation-and-Customization.html#Installation-and-Customization">Installation and Customization</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 296 </td></tr>
cannam@127 297 <tr><td align="left" valign="top">&bull; <a href="Acknowledgments.html#Acknowledgments">Acknowledgments</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 298 </td></tr>
cannam@127 299 <tr><td align="left" valign="top">&bull; <a href="License-and-Copyright.html#License-and-Copyright">License and Copyright</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 300 </td></tr>
cannam@127 301 <tr><td align="left" valign="top">&bull; <a href="Concept-Index.html#Concept-Index">Concept Index</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 302 </td></tr>
cannam@127 303 <tr><td align="left" valign="top">&bull; <a href="Library-Index.html#Library-Index">Library Index</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
cannam@127 304 </td></tr>
cannam@127 305 </table>
cannam@127 306
cannam@127 307 <hr>
cannam@127 308 <div class="header">
cannam@127 309 <p>
cannam@127 310 Next: <a href="Introduction.html#Introduction" accesskey="n" rel="next">Introduction</a>, Previous: <a href="../dir/index.html" accesskey="p" rel="prev">(dir)</a>, Up: <a href="../dir/index.html" accesskey="u" rel="up">(dir)</a> &nbsp; [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
cannam@127 311 </div>
cannam@127 312
cannam@127 313
cannam@127 314
cannam@127 315 </body>
cannam@127 316 </html>