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62 | drwxr-xr-x···0·root·········(0)·root·········(0)········0·2017-08-16·01:22:14.000000·./usr/share/info/ | 62 | drwxr-xr-x···0·root·········(0)·root·········(0)········0·2017-08-16·01:22:14.000000·./usr/share/info/ |
63 | -rw-r--r--···0·root·········(0)·root·········(0)····53314·2017-08-16·01:22:14.000000·./usr/share/info/fftw.info.gz | 63 | -rw-r--r--···0·root·········(0)·root·········(0)····53314·2017-08-16·01:22:14.000000·./usr/share/info/fftw.info.gz |
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81 | AIX.</a> | 81 | AIX.</a> |
82 | <li><a·href="section5.html#bigprimebug"·rel=subdocument>Q5.10.·FFTW·2.1.2's·complex·transforms·give·incorrect·results·for·large·prime | 82 | <li><a·href="section5.html#bigprimebug"·rel=subdocument>Q5.10.·FFTW·2.1.2's·complex·transforms·give·incorrect·results·for·large·prime |
83 | sizes.</a> | 83 | sizes.</a> |
84 | <li><a·href="section5.html#aixflags"·rel=subdocument>Q5.11.·FFTW·2.1.3·crashes·on·AIX</a> | 84 | <li><a·href="section5.html#aixflags"·rel=subdocument>Q5.11.·FFTW·2.1.3·crashes·on·AIX</a> |
85 | </ul><hr> | 85 | </ul><hr> |
86 | <address> | 86 | <address> |
87 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> | 87 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> |
88 | -·0 | 88 | -·08·February·2025 |
89 | </address><br> | 89 | </address><br> |
90 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, | 90 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, |
91 | Copyright·©·202 | 91 | Copyright·©·2025·Massachusetts·Institute·of·Technology. |
92 | </body></html> | 92 | </body></html> |
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60 | ······factors_17_to_97. | 60 | ······factors_17_to_97. |
61 | ····*·Q5.8._FFTW_2.1.1's_MPI_test_programs_crash_with_MPICH. | 61 | ····*·Q5.8._FFTW_2.1.1's_MPI_test_programs_crash_with_MPICH. |
62 | ····*·Q5.9._FFTW_2.1.2's_multi-threaded_transforms_don't_work_on_AIX. | 62 | ····*·Q5.9._FFTW_2.1.2's_multi-threaded_transforms_don't_work_on_AIX. |
63 | ····*·Q5.10._FFTW_2.1.2's_complex_transforms_give_incorrect_results_for_large | 63 | ····*·Q5.10._FFTW_2.1.2's_complex_transforms_give_incorrect_results_for_large |
64 | ······prime_sizes. | 64 | ······prime_sizes. |
65 | ····*·Q5.11._FFTW_2.1.3_crashes_on_AIX | 65 | ····*·Q5.11._FFTW_2.1.3_crashes_on_AIX |
66 | =============================================================================== | 66 | =============================================================================== |
67 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·0 | 67 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·08·February·2025 |
68 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·202 | 68 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·2025 |
69 | Massachusetts·Institute·of·Technology. | 69 | Massachusetts·Institute·of·Technology. |
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66 | copyright·to·FFTW·and·they·only·let·us·GPL·it·because·we·convinced | 66 | copyright·to·FFTW·and·they·only·let·us·GPL·it·because·we·convinced |
67 | them·that·it·would·neither·affect·their·licensing·revenue·nor·irritate | 67 | them·that·it·would·neither·affect·their·licensing·revenue·nor·irritate |
68 | existing·licensees.··<hr> | 68 | existing·licensees.··<hr> |
69 | Next:·<a·href="section2.html"·rel=precedes>Installing·FFTW</a>.<br> | 69 | Next:·<a·href="section2.html"·rel=precedes>Installing·FFTW</a>.<br> |
70 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> | 70 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> |
71 | <address> | 71 | <address> |
72 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> | 72 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> |
73 | -·0 | 73 | -·08·February·2025 |
74 | </address><br> | 74 | </address><br> |
75 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, | 75 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, |
76 | Copyright·©·202 | 76 | Copyright·©·2025·Massachusetts·Institute·of·Technology. |
77 | </body></html> | 77 | </body></html> |
Offset 35, 11 lines modified | Offset 35, 11 lines modified | ||
35 | We·could·instead·have·released·FFTW·under·the·LGPL,·or·even·disallowed·non-Free | 35 | We·could·instead·have·released·FFTW·under·the·LGPL,·or·even·disallowed·non-Free |
36 | usage.·Suffice·it·to·say,·however,·that·MIT·owns·the·copyright·to·FFTW·and·they | 36 | usage.·Suffice·it·to·say,·however,·that·MIT·owns·the·copyright·to·FFTW·and·they |
37 | only·let·us·GPL·it·because·we·convinced·them·that·it·would·neither·affect·their | 37 | only·let·us·GPL·it·because·we·convinced·them·that·it·would·neither·affect·their |
38 | licensing·revenue·nor·irritate·existing·licensees. | 38 | licensing·revenue·nor·irritate·existing·licensees. |
39 | =============================================================================== | 39 | =============================================================================== |
40 | Next:·Installing_FFTW. | 40 | Next:·Installing_FFTW. |
41 | Return_to_contents. | 41 | Return_to_contents. |
42 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·0 | 42 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·08·February·2025 |
43 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·202 | 43 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·2025 |
44 | Massachusetts·Institute·of·Technology. | 44 | Massachusetts·Institute·of·Technology. |
Offset 159, 12 lines modified | Offset 159, 12 lines modified | ||
159 | On·a·Unix·system:·<code>configure·--enable-float</code>.··On·a·non-Unix·system:·edit·<code>fftw/fftw.h</code>·to·<code>#define</code>·the·symbol·<code>FFTW_ENABLE_FLOAT</code>.··In·both·cases,·you·must·then·recompile | 159 | On·a·Unix·system:·<code>configure·--enable-float</code>.··On·a·non-Unix·system:·edit·<code>fftw/fftw.h</code>·to·<code>#define</code>·the·symbol·<code>FFTW_ENABLE_FLOAT</code>.··In·both·cases,·you·must·then·recompile |
160 | FFTW.··<hr> | 160 | FFTW.··<hr> |
161 | Next:·<a·href="section3.html"·rel=precedes>Using·FFTW</a>.<br> | 161 | Next:·<a·href="section3.html"·rel=precedes>Using·FFTW</a>.<br> |
162 | Back:·<a·href="section1.html"·rev=precedes>Introduction·and·General·Information</a>.<br> | 162 | Back:·<a·href="section1.html"·rev=precedes>Introduction·and·General·Information</a>.<br> |
163 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> | 163 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> |
164 | <address> | 164 | <address> |
165 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> | 165 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> |
166 | -·0 | 166 | -·08·February·2025 |
167 | </address><br> | 167 | </address><br> |
168 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, | 168 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, |
169 | Copyright·©·202 | 169 | Copyright·©·2025·Massachusetts·Institute·of·Technology. |
170 | </body></html> | 170 | </body></html> |
Offset 90, 11 lines modified | Offset 90, 11 lines modified | ||
90 | On·a·Unix·system:·configure·--enable-float.·On·a·non-Unix·system:·edit·fftw/ | 90 | On·a·Unix·system:·configure·--enable-float.·On·a·non-Unix·system:·edit·fftw/ |
91 | fftw.h·to·#define·the·symbol·FFTW_ENABLE_FLOAT.·In·both·cases,·you·must·then | 91 | fftw.h·to·#define·the·symbol·FFTW_ENABLE_FLOAT.·In·both·cases,·you·must·then |
92 | recompile·FFTW. | 92 | recompile·FFTW. |
93 | =============================================================================== | 93 | =============================================================================== |
94 | Next:·Using_FFTW. | 94 | Next:·Using_FFTW. |
95 | Back:·Introduction_and_General_Information. | 95 | Back:·Introduction_and_General_Information. |
96 | Return_to_contents. | 96 | Return_to_contents. |
97 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·0 | 97 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·08·February·2025 |
98 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·202 | 98 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·2025 |
99 | Massachusetts·Institute·of·Technology. | 99 | Massachusetts·Institute·of·Technology. |
Offset 173, 12 lines modified | Offset 173, 12 lines modified | ||
173 | transform·if·they·are·larger·than·a·few·hundred·elements.· | 173 | transform·if·they·are·larger·than·a·few·hundred·elements.· |
174 | <hr> | 174 | <hr> |
175 | Next:·<a·href="section4.html"·rel=precedes>Internals·of·FFTW</a>.<br> | 175 | Next:·<a·href="section4.html"·rel=precedes>Internals·of·FFTW</a>.<br> |
176 | Back:·<a·href="section2.html"·rev=precedes>Installing·FFTW</a>.<br> | 176 | Back:·<a·href="section2.html"·rev=precedes>Installing·FFTW</a>.<br> |
177 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> | 177 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> |
178 | <address> | 178 | <address> |
179 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> | 179 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> |
180 | -·0 | 180 | -·08·February·2025 |
181 | </address><br> | 181 | </address><br> |
182 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, | 182 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, |
183 | Copyright·©·202 | 183 | Copyright·©·2025·Massachusetts·Institute·of·Technology. |
184 | </body></html> | 184 | </body></html> |
Offset 97, 11 lines modified | Offset 97, 11 lines modified | ||
97 | You·cannot·declare·large·arrays·statically;·you·should·use·malloc·(or | 97 | You·cannot·declare·large·arrays·statically;·you·should·use·malloc·(or |
98 | equivalent)·to·allocate·the·arrays·you·want·to·transform·if·they·are·larger | 98 | equivalent)·to·allocate·the·arrays·you·want·to·transform·if·they·are·larger |
99 | than·a·few·hundred·elements. | 99 | than·a·few·hundred·elements. |
100 | =============================================================================== | 100 | =============================================================================== |
101 | Next:·Internals_of_FFTW. | 101 | Next:·Internals_of_FFTW. |
102 | Back:·Installing_FFTW. | 102 | Back:·Installing_FFTW. |
103 | Return_to_contents. | 103 | Return_to_contents. |
104 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·0 | 104 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·08·February·2025 |
105 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·202 | 105 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·2025 |
106 | Massachusetts·Institute·of·Technology. | 106 | Massachusetts·Institute·of·Technology. |
Offset 75, 12 lines modified | Offset 75, 12 lines modified | ||
75 | <p> | 75 | <p> |
76 | In·short,·<code>wisdom</code>·does·more·things·with·less·effort,·and·seemed·like·The·Right·Thing·to·do.··<hr> | 76 | In·short,·<code>wisdom</code>·does·more·things·with·less·effort,·and·seemed·like·The·Right·Thing·to·do.··<hr> |
77 | Next:·<a·href="section5.html"·rel=precedes>Known·bugs</a>.<br> | 77 | Next:·<a·href="section5.html"·rel=precedes>Known·bugs</a>.<br> |
78 | Back:·<a·href="section3.html"·rev=precedes>Using·FFTW</a>.<br> | 78 | Back:·<a·href="section3.html"·rev=precedes>Using·FFTW</a>.<br> |
79 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> | 79 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> |
80 | <address> | 80 | <address> |
81 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> | 81 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> |
82 | -·0 | 82 | -·08·February·2025 |
83 | </address><br> | 83 | </address><br> |
84 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, | 84 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, |
85 | Copyright·©·202 | 85 | Copyright·©·2025·Massachusetts·Institute·of·Technology. |
86 | </body></html> | 86 | </body></html> |
Offset 43, 11 lines modified | Offset 43, 11 lines modified | ||
43 | can·be·reused. | 43 | can·be·reused. |
44 | In·short,·wisdom·does·more·things·with·less·effort,·and·seemed·like·The·Right | 44 | In·short,·wisdom·does·more·things·with·less·effort,·and·seemed·like·The·Right |
45 | Thing·to·do. | 45 | Thing·to·do. |
46 | =============================================================================== | 46 | =============================================================================== |
47 | Next:·Known_bugs. | 47 | Next:·Known_bugs. |
48 | Back:·Using_FFTW. | 48 | Back:·Using_FFTW. |
49 | Return_to_contents. | 49 | Return_to_contents. |
50 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·0 | 50 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·08·February·2025 |
51 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·202 | 51 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·2025 |
52 | Massachusetts·Institute·of·Technology. | 52 | Massachusetts·Institute·of·Technology. |
Offset 126, 12 lines modified | Offset 126, 12 lines modified | ||
126 | The·FFTW·2.1.3·<code>configure</code>·script·picked·incorrect·compiler·flags·for·the·<code>xlc</code>·compiler·on·newer·IBM·processors.··This | 126 | The·FFTW·2.1.3·<code>configure</code>·script·picked·incorrect·compiler·flags·for·the·<code>xlc</code>·compiler·on·newer·IBM·processors.··This |
127 | is·fixed·in·FFTW·2.1.4.··<hr> | 127 | is·fixed·in·FFTW·2.1.4.··<hr> |
128 | Back:·<a·href="section4.html"·rev=precedes>Internals·of·FFTW</a>.<br> | 128 | Back:·<a·href="section4.html"·rev=precedes>Internals·of·FFTW</a>.<br> |
129 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> | 129 | <a·href="index.html"·rev=subdocument>Return·to·contents</a>.<p> |
130 | <address> | 130 | <address> |
131 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> | 131 | <A·href="http://www.fftw.org">Matteo·Frigo·and·Steven·G.·Johnson</A>·/·<A·href="mailto:fftw@fftw.org">fftw@fftw.org</A> |
132 | -·0 | 132 | -·08·February·2025 |
133 | </address><br> | 133 | </address><br> |
134 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, | 134 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers, |
135 | Copyright·©·202 | 135 | Copyright·©·2025·Massachusetts·Institute·of·Technology. |
136 | </body></html> | 136 | </body></html> |
Offset 65, 11 lines modified | Offset 65, 11 lines modified | ||
65 | (Sizes·without·large·prime·factors·are·not·affected.) | 65 | (Sizes·without·large·prime·factors·are·not·affected.) |
66 | *****·Question·5.11.·FFTW·2.1.3·crashes·on·AIX·***** | 66 | *****·Question·5.11.·FFTW·2.1.3·crashes·on·AIX·***** |
67 | The·FFTW·2.1.3·configure·script·picked·incorrect·compiler·flags·for·the·xlc | 67 | The·FFTW·2.1.3·configure·script·picked·incorrect·compiler·flags·for·the·xlc |
68 | compiler·on·newer·IBM·processors.·This·is·fixed·in·FFTW·2.1.4. | 68 | compiler·on·newer·IBM·processors.·This·is·fixed·in·FFTW·2.1.4. |
69 | =============================================================================== | 69 | =============================================================================== |
70 | Back:·Internals_of_FFTW. | 70 | Back:·Internals_of_FFTW. |
71 | Return_to_contents. | 71 | Return_to_contents. |
72 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·0 | 72 | ·····Matteo_Frigo_and_Steven_G._Johnson·/·fftw@fftw.org·-·08·February·2025 |
73 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·202 | 73 | Extracted·from·FFTW·Frequently·Asked·Questions·with·Answers,·Copyright·©·2025 |
74 | Massachusetts·Institute·of·Technology. | 74 | Massachusetts·Institute·of·Technology. |
Offset 1, 9 lines modified | Offset 1, 9 lines modified | ||
1 | ············FFTW·FREQUENTLY·ASKED·QUESTIONS·WITH·ANSWERS | 1 | ············FFTW·FREQUENTLY·ASKED·QUESTIONS·WITH·ANSWERS |
2 | ····························0 | 2 | ····························08·Feb·2025 |
3 | » » » ·····Matteo·Frigo | 3 | » » » ·····Matteo·Frigo |
4 | » » » ···Steven·G.·Johnson | 4 | » » » ···Steven·G.·Johnson |
5 | ·» » » ····<fftw@fftw.org> | 5 | ·» » » ····<fftw@fftw.org> |
6 | This·is·the·list·of·Frequently·Asked·Questions·about·FFTW,·a·collection·of | 6 | This·is·the·list·of·Frequently·Asked·Questions·about·FFTW,·a·collection·of |
7 | fast·C·routines·for·computing·the·Discrete·Fourier·Transform·in·one·or | 7 | fast·C·routines·for·computing·the·Discrete·Fourier·Transform·in·one·or |
8 | more·dimensions. | 8 | more·dimensions. |
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1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> | 1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> |
2 | <HTML> | 2 | <HTML> |
3 | <HEAD> | 3 | <HEAD> |
4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·Introduction</TITLE> | 6 | <TITLE>FFTW·-·Introduction</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | Go·to·the·first,·previous,·<A·HREF="fftw_2.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. | 9 | Go·to·the·first,·previous,·<A·HREF="fftw_2.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. |
10 | <P><HR><P> | 10 | <P><HR><P> |
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1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> | 1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> |
2 | <HTML> | 2 | <HTML> |
3 | <HEAD> | 3 | <HEAD> |
4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·Library·Index</TITLE> | 6 | <TITLE>FFTW·-·Library·Index</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_9.html">previous</A>,·next,·last·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. | 9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_9.html">previous</A>,·next,·last·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. |
10 | <P><HR><P> | 10 | <P><HR><P> |
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1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> | 1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> |
2 | <HTML> | 2 | <HTML> |
3 | <HEAD> | 3 | <HEAD> |
4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·Tutorial</TITLE> | 6 | <TITLE>FFTW·-·Tutorial</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_1.html">previous</A>,·<A·HREF="fftw_3.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. | 9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_1.html">previous</A>,·<A·HREF="fftw_3.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. |
10 | <P><HR><P> | 10 | <P><HR><P> |
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1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> | 1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> |
2 | <HTML> | 2 | <HTML> |
3 | <HEAD> | 3 | <HEAD> |
4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·FFTW·Reference</TITLE> | 6 | <TITLE>FFTW·-·FFTW·Reference</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_2.html">previous</A>,·<A·HREF="fftw_4.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. | 9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_2.html">previous</A>,·<A·HREF="fftw_4.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. |
10 | <P><HR><P> | 10 | <P><HR><P> |
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1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> | 1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> |
2 | <HTML> | 2 | <HTML> |
3 | <HEAD> | 3 | <HEAD> |
4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·Parallel·FFTW</TITLE> | 6 | <TITLE>FFTW·-·Parallel·FFTW</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_3.html">previous</A>,·<A·HREF="fftw_5.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. | 9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_3.html">previous</A>,·<A·HREF="fftw_5.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. |
10 | <P><HR><P> | 10 | <P><HR><P> |
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6 | <TITLE>FFTW·-·Calling·FFTW·from·Fortran</TITLE> | 6 | <TITLE>FFTW·-·Calling·FFTW·from·Fortran</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
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4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·Installation·and·Customization</TITLE> | 6 | <TITLE>FFTW·-·Installation·and·Customization</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_5.html">previous</A>,·<A·HREF="fftw_7.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. | 9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_5.html">previous</A>,·<A·HREF="fftw_7.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. |
10 | <P><HR><P> | 10 | <P><HR><P> |
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3 | <HEAD> | 3 | <HEAD> |
4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·Acknowledgments</TITLE> | 6 | <TITLE>FFTW·-·Acknowledgments</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_6.html">previous</A>,·<A·HREF="fftw_8.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. | 9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_6.html">previous</A>,·<A·HREF="fftw_8.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. |
10 | <P><HR><P> | 10 | <P><HR><P> |
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3 | <HEAD> | 3 | <HEAD> |
4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·License·and·Copyright</TITLE> | 6 | <TITLE>FFTW·-·License·and·Copyright</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_7.html">previous</A>,·<A·HREF="fftw_9.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. | 9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_7.html">previous</A>,·<A·HREF="fftw_9.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. |
10 | <P><HR><P> | 10 | <P><HR><P> |
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1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> | 1 | <!DOCTYPE·HTML·PUBLIC·"-//W3C//DTD·HTML·3.2//EN"> |
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3 | <HEAD> | 3 | <HEAD> |
4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·Concept·Index</TITLE> | 6 | <TITLE>FFTW·-·Concept·Index</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_8.html">previous</A>,·<A·HREF="fftw_10.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. | 9 | Go·to·the·<A·HREF="fftw_1.html">first</A>,·<A·HREF="fftw_8.html">previous</A>,·<A·HREF="fftw_10.html">next</A>,·<A·HREF="fftw_10.html">last</A>·section,·<A·HREF="fftw_toc.html">table·of·contents</A>. |
10 | <P><HR><P> | 10 | <P><HR><P> |
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4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·Footnotes</TITLE> | 6 | <TITLE>FFTW·-·Footnotes</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | <H1>FFTW·User's·Manual</H1> | 9 | <H1>FFTW·User's·Manual</H1> |
10 | <H2>For·version·2.1.5,· | 10 | <H2>For·version·2.1.5,·8·February·2025</H2> |
11 | <ADDRESS>Matteo·Frigo</ADDRESS> | 11 | <ADDRESS>Matteo·Frigo</ADDRESS> |
12 | <ADDRESS>Steven·G.·Johnson</ADDRESS> | 12 | <ADDRESS>Steven·G.·Johnson</ADDRESS> |
13 | <P> | 13 | <P> |
14 | <P><HR><P> | 14 | <P><HR><P> |
15 | <H3><A·NAME="FOOT1"·HREF="fftw_2.html#DOCF1">(1)</A></H3> | 15 | <H3><A·NAME="FOOT1"·HREF="fftw_2.html#DOCF1">(1)</A></H3> |
16 | <P>The·output·for·the | 16 | <P>The·output·for·the |
17 | multi-dimensional·rfftw·is·a·more-conventional·array·of | 17 | multi-dimensional·rfftw·is·a·more-conventional·array·of |
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58 | to·link·to·FFTW. | 58 | to·link·to·FFTW. |
59 | <H3><A·NAME="FOOT9"·HREF="fftw_6.html#DOCF9">(9)</A></H3> | 59 | <H3><A·NAME="FOOT9"·HREF="fftw_6.html#DOCF9">(9)</A></H3> |
60 | <P>Each·version·of·<CODE>cc</CODE> | 60 | <P>Each·version·of·<CODE>cc</CODE> |
61 | seems·to·have·its·own·magic·incantation·to·get·the·fastest·code·most·of | 61 | seems·to·have·its·own·magic·incantation·to·get·the·fastest·code·most·of |
62 | the·time--you'd·think·that·people·would·have·agreed·upon·some | 62 | the·time--you'd·think·that·people·would·have·agreed·upon·some |
63 | convention,·e.g.·"<CODE>-Omax</CODE>",·by·now. | 63 | convention,·e.g.·"<CODE>-Omax</CODE>",·by·now. |
64 | <P><HR><P> | 64 | <P><HR><P> |
65 | This·document·was·generated·on· | 65 | This·document·was·generated·on·8·Febuary·2025·using·the |
66 | <A·HREF="http://wwwinfo.cern.ch/dis/texi2html/">texi2html</A> | 66 | <A·HREF="http://wwwinfo.cern.ch/dis/texi2html/">texi2html</A> |
67 | translator·version·1.52.·(properly·hacked·by·athena@theory.lcs.mit.edu)</P> | 67 | translator·version·1.52.·(properly·hacked·by·athena@theory.lcs.mit.edu)</P> |
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1 | ******·FFTW·User's·Manual·****** | 1 | ******·FFTW·User's·Manual·****** |
2 | *****·For·version·2.1.5,· | 2 | *****·For·version·2.1.5,·8·February·2025·***** |
3 | ·····Matteo·Frigo | 3 | ·····Matteo·Frigo |
4 | ·····Steven·G.·Johnson | 4 | ·····Steven·G.·Johnson |
5 | =============================================================================== | 5 | =============================================================================== |
6 | ****·(1)·**** | 6 | ****·(1)·**** |
7 | The·output·for·the·multi-dimensional·rfftw·is·a·more-conventional·array·of | 7 | The·output·for·the·multi-dimensional·rfftw·is·a·more-conventional·array·of |
8 | fftw_complex·values,·but·the·format·here·permitted·us·greater·efficiency·in·one | 8 | fftw_complex·values,·but·the·format·here·permitted·us·greater·efficiency·in·one |
9 | dimension. | 9 | dimension. |
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39 | characters,·nor·may·they·contain·underscores.·Any·compiler·that·enforces·this | 39 | characters,·nor·may·they·contain·underscores.·Any·compiler·that·enforces·this |
40 | limitation·doesn't·deserve·to·link·to·FFTW. | 40 | limitation·doesn't·deserve·to·link·to·FFTW. |
41 | ****·(9)·**** | 41 | ****·(9)·**** |
42 | Each·version·of·cc·seems·to·have·its·own·magic·incantation·to·get·the·fastest | 42 | Each·version·of·cc·seems·to·have·its·own·magic·incantation·to·get·the·fastest |
43 | code·most·of·the·time--you'd·think·that·people·would·have·agreed·upon·some | 43 | code·most·of·the·time--you'd·think·that·people·would·have·agreed·upon·some |
44 | convention,·e.g.·"-Omax",·by·now. | 44 | convention,·e.g.·"-Omax",·by·now. |
45 | =============================================================================== | 45 | =============================================================================== |
46 | This·document·was·generated·on· | 46 | This·document·was·generated·on·8·Febuary·2025·using·the·texi2html·translator |
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4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 | 4 | <!--·This·HTML·file·has·been·created·by·texi2html·1.52 |
5 | ·····from·fftw.texi·on· | 5 | ·····from·fftw.texi·on·8·Febuary·2025·--> |
6 | <TITLE>FFTW·-·Table·of·Contents</TITLE> | 6 | <TITLE>FFTW·-·Table·of·Contents</TITLE> |
7 | </HEAD> | 7 | </HEAD> |
8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> | 8 | <BODY·TEXT="#000000"·BGCOLOR="#FFFFFF"> |
9 | <H1>FFTW·User's·Manual</H1> | 9 | <H1>FFTW·User's·Manual</H1> |
10 | <H2>For·version·2.1.5,· | 10 | <H2>For·version·2.1.5,·8·February·2025</H2> |
11 | <ADDRESS>Matteo·Frigo</ADDRESS> | 11 | <ADDRESS>Matteo·Frigo</ADDRESS> |
12 | <ADDRESS>Steven·G.·Johnson</ADDRESS> | 12 | <ADDRESS>Steven·G.·Johnson</ADDRESS> |
13 | <P> | 13 | <P> |
14 | <P><HR><P> | 14 | <P><HR><P> |
15 | <UL> | 15 | <UL> |
16 | <LI><A·NAME="TOC1"·HREF="fftw_1.html#SEC1">Introduction</A> | 16 | <LI><A·NAME="TOC1"·HREF="fftw_1.html#SEC1">Introduction</A> |
17 | <LI><A·NAME="TOC2"·HREF="fftw_2.html#SEC2">Tutorial</A> | 17 | <LI><A·NAME="TOC2"·HREF="fftw_2.html#SEC2">Tutorial</A> |
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116 | </UL> | 116 | </UL> |
117 | <LI><A·NAME="TOC73"·HREF="fftw_7.html#SEC73">Acknowledgments</A> | 117 | <LI><A·NAME="TOC73"·HREF="fftw_7.html#SEC73">Acknowledgments</A> |
118 | <LI><A·NAME="TOC74"·HREF="fftw_8.html#SEC74">License·and·Copyright</A> | 118 | <LI><A·NAME="TOC74"·HREF="fftw_8.html#SEC74">License·and·Copyright</A> |
119 | <LI><A·NAME="TOC75"·HREF="fftw_9.html#SEC75">Concept·Index</A> | 119 | <LI><A·NAME="TOC75"·HREF="fftw_9.html#SEC75">Concept·Index</A> |
120 | <LI><A·NAME="TOC76"·HREF="fftw_10.html#SEC76">Library·Index</A> | 120 | <LI><A·NAME="TOC76"·HREF="fftw_10.html#SEC76">Library·Index</A> |
121 | </UL> | 121 | </UL> |
122 | <P><HR><P> | 122 | <P><HR><P> |
123 | This·document·was·generated·on· | 123 | This·document·was·generated·on·8·Febuary·2025·using·the |
124 | <A·HREF="http://wwwinfo.cern.ch/dis/texi2html/">texi2html</A> | 124 | <A·HREF="http://wwwinfo.cern.ch/dis/texi2html/">texi2html</A> |
125 | translator·version·1.52.·(properly·hacked·by·athena@theory.lcs.mit.edu)</P> | 125 | translator·version·1.52.·(properly·hacked·by·athena@theory.lcs.mit.edu)</P> |
126 | </BODY> | 126 | </BODY> |
127 | </HTML> | 127 | </HTML> |
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1 | ******·FFTW·User's·Manual·****** | 1 | ******·FFTW·User's·Manual·****** |
2 | *****·For·version·2.1.5,· | 2 | *****·For·version·2.1.5,·8·February·2025·***** |
3 | ·····Matteo·Frigo | 3 | ·····Matteo·Frigo |
4 | ·····Steven·G.·Johnson | 4 | ·····Steven·G.·Johnson |
5 | =============================================================================== | 5 | =============================================================================== |
6 | ····*·Introduction | 6 | ····*·Introduction |
7 | ····*·Tutorial | 7 | ····*·Tutorial |
8 | ··········o·Complex_One-dimensional_Transforms_Tutorial | 8 | ··········o·Complex_One-dimensional_Transforms_Tutorial |
9 | ··········o·Complex_Multi-dimensional_Transforms_Tutorial | 9 | ··········o·Complex_Multi-dimensional_Transforms_Tutorial |
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76 | ··········o·Customizing_the_timer | 76 | ··········o·Customizing_the_timer |
77 | ··········o·Generating_your_own_code | 77 | ··········o·Generating_your_own_code |
78 | ····*·Acknowledgments | 78 | ····*·Acknowledgments |
79 | ····*·License_and_Copyright | 79 | ····*·License_and_Copyright |
80 | ····*·Concept_Index | 80 | ····*·Concept_Index |
81 | ····*·Library_Index | 81 | ····*·Library_Index |
82 | =============================================================================== | 82 | =============================================================================== |
83 | This·document·was·generated·on· | 83 | This·document·was·generated·on·8·Febuary·2025·using·the·texi2html·translator |
84 | version·1.52.·(properly·hacked·by·athena@theory.lcs.mit.edu) | 84 | version·1.52.·(properly·hacked·by·athena@theory.lcs.mit.edu) |