LICENSE

Copyright (C) 2017-2023 The Simons Foundation, Inc. - All Rights Reserved.

Lead developer: Alex H. Barnett; see docs/ackn.rst for other contributors.

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FINUFFT is licensed under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance with the
License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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Certain parts of this repository are contributed by others.
For their license info, see:

contrib/legendre_rule_fast.license
fortran/cmcl_license.txt
tutorial/utils/lgwt.m

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If you find this library useful, or it helps you in creating software
or publications, please let us know, and acknowledge that fact by citing our
repository:

  https://github.com/flatironinstitute/finufft

and the corresponding journal articles (particularly the first):

  A parallel non-uniform fast Fourier transform library based on an
  ``exponential of semicircle'' kernel. A. H. Barnett, J. F. Magland,
  and L. af Klinteberg.  SIAM J. Sci. Comput. 41(5), C479-C504 (2019).

  Aliasing error of the exp$(\beta \sqrt{1-z^2})$ kernel in the
  nonuniform fast Fourier transform. A. H. Barnett,
  Appl. Comput. Harmon. Anal. 51, 1-16 (2021).