1Contributions are preferred via Bitbucket pull request to 2 3 https://bitbucket.org/petsc/petsc 4 5or via patches (`git send-email` or `git format-patch`) sent to 6petsc-dev@mcs.anl.gov. If you are planning a large contribution, we 7encourage you to discuss the concept on the mailing list and interact 8with us frequently to ensure that your effort is well-directed. 9 10PETSc is distributed under a 2-clause BSD license (see LICENSE). The 11act of submitting a pull request or patch (with or without an explicit 12Signed-off-by tag) will be understood as an affirmation of the 13following: 14 15 Developer's Certificate of Origin 1.1 16 17 By making a contribution to this project, I certify that: 18 19 (a) The contribution was created in whole or in part by me and I 20 have the right to submit it under the open source license 21 indicated in the file; or 22 23 (b) The contribution is based upon previous work that, to the best 24 of my knowledge, is covered under an appropriate open source 25 license and I have the right under that license to submit that 26 work with modifications, whether created in whole or in part 27 by me, under the same open source license (unless I am 28 permitted to submit under a different license), as indicated 29 in the file; or 30 31 (c) The contribution was provided directly to me by some other 32 person who certified (a), (b) or (c) and I have not modified 33 it. 34 35 (d) I understand and agree that this project and the contribution 36 are public and that a record of the contribution (including all 37 personal information I submit with it, including my sign-off) is 38 maintained indefinitely and may be redistributed consistent with 39 this project or the open source license(s) involved. 40