LICENSE

Copyright (C) 2019-2023 The Simons Foundation, Inc., FMM3D Development Team 
(see AUTHORS) - All Rights Reserved.

FMM3D as a whole 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.
 
This product bundles the file "src/Common/dlaran.f", 
which is available under a modified "3-Clause BSD" license. 
For details, see src/Common/dlaran.f.
This product bundles the files "src/Common/dfft.f", "src/Helmholtz/hwts3e.f",
"src/Helmholtz/hwts_3d_iprec0.txt",
"src/Helmholtz/hwts_3d_iprec1.txt",
"src/Helmholtz/hwts_3d_iprec2.txt",
"src/Helmholtz/hwts_3d_iprec3.txt",
"src/Helmholtz/hwts_3d_iprec4.txt",
"src/Helmholtz/hnumfour.f",
"src/Helmholtz/hnumphys.f",
"src/Laplace/lwtsexp_sep1.f", and
"src/Laplace/lwtsexp_sep2.f",
which are available under the public domain. See each file for details.

References
===========
Also, if you find this library useful, or it helps you in creating
software or publications, please acknowledge that fact by citing this
repository along with the author names, and any corresponding journal
article.