aetherfloat-validation/LICENSE at main · k1832/aetherfloat-validation · GitHub

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AETHERFLOAT ACADEMIC EVALUATION LICENSE

Copyright (c) 2026 Keita Morisaki. All rights reserved.

Patent Notice
--------------
The algorithms, methods, data formats, microarchitectures, and architectural
designs embodied in this software are the subject of one or more pending patent
applications, including but not limited to:

  - U.S. Provisional Patent Application No. 63/987,398
    "SYSTEMS AND METHODS FOR BLOCK-SCALE-FREE HIGH-RADIX FLOATING-POINT
    PROCESSING WITH EXPLICIT MANTISSA AND NATIVE LEXICOGRAPHICAL
    COMPARABILITY" (filed February 20, 2026)

  - Subsequent continuation, divisional, supplemental, and international
    filings claiming priority thereto.

Grant of Rights
----------------
Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of this software and associated documentation files (the
"Software"), to use, copy, and modify the Software solely for the following
purposes:

  1. Academic research and evaluation;
  2. Peer review and reproducibility verification of published results;
  3. Non-commercial educational instruction; and
  4. Personal, non-commercial experimentation.

The above grant expressly includes the right to run the Software, inspect its
outputs, and publish academic findings derived from its use, provided that such
publications include appropriate citation of the associated paper:

  Morisaki, K. (2026). "The AetherFloat Family: Block-Scale-Free Quad-Radix
  Floating-Point Architectures for AI Accelerators." arXiv:2603.08741.
  https://arxiv.org/abs/2603.08741

Restrictions
-------------
The following activities are NOT permitted under this license without a
separate, written commercial license agreement from the copyright holder:

  1. Commercial deployment — Incorporating the Software, or any portion
     thereof, into any product, service, or system that is sold, licensed,
     leased, or otherwise commercially distributed;

  2. Hardware synthesis integration — Using the Verilog, RTL descriptions,
     or synthesis scripts contained herein to produce, tape out, or program
     any physical or virtual hardware (including but not limited to ASICs,
     FPGAs, and silicon IP cores) for any purpose other than academic
     evaluation;

  3. Proprietary architecture incorporation — Integrating the floating-point
     encoding, MAC datapath designs, Lexicographic One's Complement mapping,
     Quad-Radix scaling methodology, Explicit Mantissa datapath,
     Precision-Upcasting emulation method, Asymmetric QAT datapath, or
     vector-shared stochastic rounding topology into proprietary hardware or
     software architectures;

  4. Sublicensing or redistribution — Redistributing the Software, in whole
     or in part, under any other license terms, or sublicensing rights
     granted hereunder to third parties; and

  5. Training of machine learning models for commercial purposes — Using the
     Software or its outputs (including quantized weights, training
     checkpoints, or calibration tables) to produce models intended for
     commercial deployment.

Redistribution of unmodified or modified copies of the Software is permitted
only if:

  (a) This license file is included in its entirety;
  (b) The patent notice above is preserved;
  (c) Modified files state prominently that they were changed; and
  (d) The redistribution is exclusively for a permitted purpose listed under
      "Grant of Rights."

Commercial Licensing
---------------------
For commercial deployment, hardware integration, or any use not expressly
permitted above, please contact:

  Keita Morisaki
  kmta1236@gmail.com

Disclaimer of Warranty
-----------------------
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER OR PATENT APPLICANT BE LIABLE FOR ANY CLAIM, DAMAGES, OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING
FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
IN THE SOFTWARE.

Nothing in this license shall be construed as a grant, by implication, estoppel,
or otherwise, of any license under any patent claim covering the Software,
except for the limited academic evaluation rights expressly stated above.