cannam@95: @node License and Copyright, Concept Index, Acknowledgments, Top
cannam@95: @chapter License and Copyright
cannam@95: 
cannam@95: FFTW is Copyright @copyright{} 2003, 2007-11 Matteo Frigo, Copyright
cannam@95: @copyright{} 2003, 2007-11 Massachusetts Institute of Technology.
cannam@95: 
cannam@95: FFTW is free software; you can redistribute it and/or modify
cannam@95: it under the terms of the GNU General Public License as published by
cannam@95: the Free Software Foundation; either version 2 of the License, or
cannam@95: (at your option) any later version.
cannam@95: 
cannam@95: This program is distributed in the hope that it will be useful,
cannam@95: but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@95: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@95: GNU General Public License for more details.
cannam@95: 
cannam@95: You should have received a copy of the GNU General Public License along
cannam@95: with this program; if not, write to the Free Software Foundation, Inc.,
cannam@95: 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA You can also
cannam@95: find the @uref{http://www.gnu.org/licenses/gpl-2.0.html, GPL on the GNU
cannam@95: web site}.
cannam@95: 
cannam@95: In addition, we kindly ask you to acknowledge FFTW and its authors in
cannam@95: any program or publication in which you use FFTW.  (You are not
cannam@95: @emph{required} to do so; it is up to your common sense to decide
cannam@95: whether you want to comply with this request or not.)  For general
cannam@95: publications, we suggest referencing: Matteo Frigo and Steven
cannam@95: G. Johnson, ``The design and implementation of FFTW3,''
cannam@95: @i{Proc. IEEE} @b{93} (2), 216--231 (2005).
cannam@95: 
cannam@95: Non-free versions of FFTW are available under terms different from those
cannam@95: of the General Public License. (e.g. they do not require you to
cannam@95: accompany any object code using FFTW with the corresponding source
cannam@95: code.)  For these alternative terms you must purchase a license from MIT's
cannam@95: Technology Licensing Office.  Users interested in such a license should
cannam@95: contact us (@email{fftw@@fftw.org}) for more information.
cannam@95: 
cannam@95: