License and Copyright

NUFFT is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. It is also available from the GNU web site.

Please acknowledge NUFFT and its authors in any program or publication in which you use the code. We suggest as references:
Leslie Greengard and June-Yub Lee, “Accelerating the Nonuniform Fast Fourier Transform, ” SIAM Review 46, 443–454 (2004), June-Yub Lee and Leslie Greengard, “The type 3 Nonuniform FFT and its Applications, ” J. Comput. Phys. 206, 1–5 (2005).

The NUFFT is also available under terms different from those of the GNU General Public License. Users interested in such a license should contact Leslie Greengard (greengard [at] for more information.

Copyright © 2009 Leslie Greengard and June-Yub Lee.