License¶
Celeritas is copyrighted and licensed under the following terms and conditions.
Code¶
Intellectual Property Notice¶
Celeritas is licensed under the Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0) or the MIT license, (LICENSE-MIT or http://opensource.org/licenses/MIT), at your option.
Copyrights and patents in the Celeritas project are retained by contributors. No copyright assignment is required to contribute to Celeritas.
SPDX usage¶
Individual files contain SPDX tags instead of the full license text. This enables machine processing of license information based on the SPDX License Identifiers that are available here: https://spdx.org/licenses/
Files that are dual-licensed as Apache-2.0 OR MIT contain the following text in the license header:
SPDX-License-Identifier: (Apache-2.0 OR MIT)
Software derived from external sources used in Celeritas¶
Certain files in Celeritas are derived from external projects. The top of each such file contains the attribution, the license’s SPDX identifier, and a link to the license. Full copies of the licenses are included in the online user documentation.
Documentation¶
Intellectual Property Notice¶
Celeritas documentation is licensed under the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/legalcode).
Copyrights and patents in the Celeritas project are retained by contributors. No copyright assignment is required to contribute to Celeritas.
SPDX usage¶
Individual files contain SPDX tags instead of the full license text. This enables machine processing of license information based on the SPDX License Identifiers that are available here: https://spdx.org/licenses/
Files that are licensed under CC 4.0 with attribution contain the following text in the license header:
SPDX-License-Identifier: CC-BY-4.0
Additional licenses¶
Small portions of Celeritas are derived from other open source projects.
CERN Apache 2.0¶
The following VecGeom-related components are derivative works:
BVHNavigator: from AdePT
with portions distributed under the following license:
Copyright 2020 CERN
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.
LLVM Apache 2.0 w/ LLVM exception¶
The implementation of several algorithms are derived from LLVM’s libc++:
Copyright 2021 LLVM
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.