Chris@19: @node License and Copyright, Concept Index, Acknowledgments, Top
Chris@19: @chapter License and Copyright
Chris@19: 
Chris@19: FFTW is Copyright @copyright{} 2003, 2007-11 Matteo Frigo, Copyright
Chris@19: @copyright{} 2003, 2007-11 Massachusetts Institute of Technology.
Chris@19: 
Chris@19: FFTW is free software; you can redistribute it and/or modify
Chris@19: it under the terms of the GNU General Public License as published by
Chris@19: the Free Software Foundation; either version 2 of the License, or
Chris@19: (at your option) any later version.
Chris@19: 
Chris@19: This program is distributed in the hope that it will be useful,
Chris@19: but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@19: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@19: GNU General Public License for more details.
Chris@19: 
Chris@19: You should have received a copy of the GNU General Public License along
Chris@19: with this program; if not, write to the Free Software Foundation, Inc.,
Chris@19: 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA You can also
Chris@19: find the @uref{http://www.gnu.org/licenses/gpl-2.0.html, GPL on the GNU
Chris@19: web site}.
Chris@19: 
Chris@19: In addition, we kindly ask you to acknowledge FFTW and its authors in
Chris@19: any program or publication in which you use FFTW.  (You are not
Chris@19: @emph{required} to do so; it is up to your common sense to decide
Chris@19: whether you want to comply with this request or not.)  For general
Chris@19: publications, we suggest referencing: Matteo Frigo and Steven
Chris@19: G. Johnson, ``The design and implementation of FFTW3,''
Chris@19: @i{Proc. IEEE} @b{93} (2), 216--231 (2005).
Chris@19: 
Chris@19: Non-free versions of FFTW are available under terms different from those
Chris@19: of the General Public License. (e.g. they do not require you to
Chris@19: accompany any object code using FFTW with the corresponding source
Chris@19: code.)  For these alternative terms you must purchase a license from MIT's
Chris@19: Technology Licensing Office.  Users interested in such a license should
Chris@19: contact us (@email{fftw@@fftw.org}) for more information.
Chris@19: 
Chris@19: