1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!ENTITY fftw-download-http "http://www.fftw.org/fftw-&fftw-version;.tar.gz">
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8 | <!ENTITY fftw-download-ftp "ftp://ftp.fftw.org/pub/fftw/fftw-&fftw-version;.tar.gz ">
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9 | <!ENTITY fftw-md5sum "927e481edbb32575397eb3d62535a856">
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10 | <!ENTITY fftw-size "4.0 MB">
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11 | <!ENTITY fftw-buildsize "59 MB (with tests)">
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12 | <!ENTITY fftw-time "0.8 SBU (with tests)">
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13 | ]>
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14 |
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15 | <sect1 id="fftw" xreflabel="fftw-&fftw-version;">
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16 | <?dbhtml filename="fftw.html"?>
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17 |
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18 | <sect1info>
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19 | <othername>$LastChangedBy$</othername>
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20 | <date>$Date$</date>
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21 | </sect1info>
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22 |
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23 | <title>fftw-&fftw-version;</title>
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24 |
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25 | <indexterm zone="fftw">
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26 | <primary sortas="a-fftw">fftw</primary>
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27 | </indexterm>
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28 |
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29 | <sect2 role="package">
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30 | <title>Introduction to fftw</title>
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31 |
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32 | <para>
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33 | FFTW is a C subroutine library for computing the discrete Fourier
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34 | transform (DFT) in one or more dimensions, of arbitrary input size, and
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35 | of both real and complex data (as well as of even/odd data, i.e. the
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36 | discrete cosine/sine transforms or DCT/DST).
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37 | </para>
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38 |
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39 | &lfs80_checked;
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40 |
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41 | <bridgehead renderas="sect3">Package Information</bridgehead>
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42 | <itemizedlist spacing="compact">
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43 | <listitem>
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44 | <para>
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45 | Download (HTTP): <ulink url="&fftw-download-http;"/>
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46 | </para>
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47 | </listitem>
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48 | <listitem>
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49 | <para>
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50 | Download (FTP): <ulink url="&fftw-download-ftp;"/>
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51 | </para>
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52 | </listitem>
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53 | <listitem>
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54 | <para>
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55 | Download MD5 sum: &fftw-md5sum;
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56 | </para>
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57 | </listitem>
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58 | <listitem>
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59 | <para>
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60 | Download size: &fftw-size;
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61 | </para>
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62 | </listitem>
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63 | <listitem>
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64 | <para>
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65 | Estimated disk space required: &fftw-buildsize;
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66 | </para>
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67 | </listitem>
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68 | <listitem>
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69 | <para>
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70 | Estimated build time: &fftw-time;
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71 | </para>
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72 | </listitem>
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73 | </itemizedlist>
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74 |
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75 | <para condition="html" role="usernotes">
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76 | User Notes: <ulink url="&blfs-wiki;/fftw"/>
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77 | </para>
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78 |
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79 | </sect2>
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80 |
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81 | <sect2 role="installation">
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82 | <title>Installation of fftw</title>
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83 |
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84 | <para>
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85 | Install <application>fftw</application> by running the following commands:
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86 | </para>
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87 |
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88 | <screen><userinput>./configure --prefix=/usr --enable-shared --enable-threads &&
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89 | make</userinput></screen>
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90 |
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91 | <para>To test the results, issue: <command>make check</command>.</para>
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92 |
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93 | <para>
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94 | Now, as the <systemitem class="username">root</systemitem> user:
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95 | </para>
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96 |
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97 | <screen role="root"><userinput>make install</userinput></screen>
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98 | </sect2>
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99 |
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100 | <sect2 role="commands">
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101 | <title>Command Explanations</title>
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102 |
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103 | <para>
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104 | <command>--enable-shared --disable-static</command>: Use shared libs
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105 | instead of static libs.
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106 | </para>
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107 |
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108 | <para>
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109 | <command>--enable-threads</command>: This enables <filename
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110 | class="libraryfile"> libfftw3_threads.so</filename> to be compiled.
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111 | It is used by e.g. the <application>gimp</application> plugin from
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112 | <ulink url="http://gmic.eu/">G'MIC</ulink>.
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113 | </para>
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114 |
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115 | </sect2>
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116 |
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117 | <sect2 role="content">
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118 | <title>Contents</title>
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119 |
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120 | <segmentedlist>
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121 | <segtitle>Installed Programs</segtitle>
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122 | <segtitle>Installed Library</segtitle>
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123 | <segtitle>Installed Directories</segtitle>
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124 |
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125 | <seglistitem>
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126 | <seg>
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127 | fftw-wisdom and fftw-wisdom-to-conf
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128 | </seg>
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129 | <seg>
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130 | libfftw3.so and libfftw3_threads.so
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131 | </seg>
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132 | <seg>
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133 | None
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134 | </seg>
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135 | </seglistitem>
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136 | </segmentedlist>
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137 |
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138 | <variablelist>
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139 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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140 | <?dbfo list-presentation="list"?>
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141 | <?dbhtml list-presentation="table"?>
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142 |
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143 | <varlistentry id="fftw-wisdom">
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144 | <term><filename>fftw-wisdom</filename></term>
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145 | <listitem>
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146 | <para>
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147 | is a utility to generate FFTW wisdom files, which contain saved
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148 | information about how to optimally compute (Fourier) transforms of
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149 | various sizes.
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150 | </para>
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151 | <indexterm zone="fftw fftw-wisdom">
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152 | <primary sortas="b-fftw-wisdom">fftw-wisdom</primary>
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153 | </indexterm>
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154 | </listitem>
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155 | </varlistentry>
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156 |
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157 | <varlistentry id="fftw-wisdom-to-conf">
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158 | <term><filename>fftw-wisdom-to-conf</filename></term>
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159 | <listitem>
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160 | <para>
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161 | is a utility to generate C configuration routines from FFTW wisdom
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162 | files, where the latter contain saved information about how to
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163 | optimally compute (Fourier) transforms of various sizes.
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164 | </para>
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165 | <indexterm zone="fftw fftw-wisdom-to-conf">
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166 | <primary sortas="b-fftw-wisdom-to-conf">fftw-wisdom-to-conf</primary>
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167 | </indexterm>
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168 | </listitem>
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169 | </varlistentry>
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170 |
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171 | </variablelist>
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172 |
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173 | </sect2>
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174 |
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175 | </sect1>
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