cml/CHANGELOG at main · nasa/cml · GitHub

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# Changelog

All notable changes to this project will be documented in this file.

--------------------------------
CML v0.2.0, May 2026
--------------------------------

This is the initial open-source release of the Johnson Space Center Aeroscience
and Flight Mechanics Division (EG) Common Model Library (CML). CML is a
relatively newly funded project so users should understand that this codebase
is a work-in-progress. Significant architectural improvements are planned for
future releases.

* Bugs addressed:
    - Fixed an issue where the Earth-Moon Rotating Frame model calculated the
      quaternion incorrectly when the Earth__Moon_to_Earth option or the
      Moon__Earth_to_Moon option was chosen. The transformation matrix was
      correct originally and is unaffected by the bug.
    - Fixed an issue where the Table Interpolation model's
      TableIndependentVariable class would access invalid data when calculating
      the interpolation fraction at the edge of the breakpoint list for the
      case where there's only two breakpoints.

* Changes to models:
    - Updated the supported JEOD version from 3.4 to the 5.x series.
    - Updated the minimum supported C++ standard to C++17.
    - Some data and models which were not suitable for public release were
      removed.

* Changes to tools:
    - Updated CMake build process to be the intended primary build tool for CML
      models. Presets are provided for users to quickly build CML in various
      configurations.
    - Added the option to use CML as a Trickified library.
    - Added code coverage instrumentation to the developer build.
    - Split out build options specific to CML unit sims into their own internal
      cml_unit_sim.mk file. Global options (TRICK_CXXFLAGS, TRICK_LDFLAGS, etc.)
      for CML consumers are now the only thing remaining in cml.mk.

* Changes to documentation:
    - Added a contributing guide.

--------------------------------
CML v0.1.0, March 2026
--------------------------------

This is the original closed-source release of CML. The content included in this
release was carried over from the Ramtares project as of commit hash
2f871f4104efc6b45cfc0d9b057bcb0b5cf6c9bd with minimal changes. This release
functions as a drop-in replacement for the Ramtares version of CML as of that
commit.

This release is available upon request for users within the NASA firewall.