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This manual is for FFTW
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(version 3.1.2, 23 June 2006).
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Copyright (C) 2003 Matteo Frigo.
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Copyright (C) 2003 Massachusetts Institute of Technology.
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Permission is granted to make and distribute verbatim copies of
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this manual provided the copyright notice and this permission
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notice are preserved on all copies.
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Permission is granted to copy and distribute modified versions of
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this manual under the conditions for verbatim copying, provided
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<h2 class="chapter">10 License and Copyright</h2>
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<p>FFTW is Copyright © 2003 Matteo Frigo, Copyright
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© 2003 Massachusetts Institute of Technology.
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<p>FFTW is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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<p>This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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<p>You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. You can also
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find the <a href="http://www.gnu.org/copyleft/gpl.html">GPL on the GNU web site</a>.
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<p>In addition, we kindly ask you to acknowledge FFTW and its authors in
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any program or publication in which you use FFTW. (You are not
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<em>required</em> to do so; it is up to your common sense to decide
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whether you want to comply with this request or not.) For general
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publications, we suggest referencing: Matteo Frigo and Steven
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G. Johnson, “The design and implementation of FFTW3,”
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<i>Proc. IEEE</i> <b>93</b> (2), 216–231 (2005).
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<p>Non-free versions of FFTW are available under terms different from those
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of the General Public License. (e.g. they do not require you to
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accompany any object code using FFTW with the corresponding source
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code.) For these alternative terms you must purchase a license from MIT's
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Technology Licensing Office. Users interested in such a license should
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contact us (<a href="mailto:fftw@fftw.org">fftw@fftw.org</a>) for more information.