Public Domain
This software was developed by employees of the National Institute of Standards and Technology, an agency of the Federal Government. Pursuant to title 17 section 105 of the United States Code, works of NIST employees are not subject to copyright protection in the United States and are considered to be in the public domain. NIST assumes no responsibility whatsoever for the use of this software by other parties, and makes no guarantees, expressed or implied, about its quality, reliability, or any other characteristic. We would appreciate acknowledgement if the software is used.
To the extent that NIST may hold copyright in countries other than the United States, you are hereby granted the non-exclusive irrevocable and unconditional right to print, publish, prepare derivative works and distribute this software, in any medium, or authorize others to do so on your behalf, on a royalty-free basis throughout the world.
You may improve, modify, and create derivative works of the software or any portion of the software, and you may copy and distribute such modifications or works. Modified works should carry a notice stating that you changed the software and should note the date and nature of any such change. Please explicitly acknowledge the National Institute of Standards and Technology as the original source, by linking back to this repository or the website.
This software can be redistributed and/or modified freely provided that any derivative works bear some notice that they are derived from it, and any modified versions bear some notice that they have been modified.