This is a C++ port of Max Bernard's C# solution for calculating temperature, pressure and air density at a given altitude according to the ISA.
It is heavily templated and suitable for use with different scalar types.
If you find a bug or have a feature-request, please raise an issue.
The implementation is header-only and written in templated C++17. You should not need to make any adjustments to your project settings or compiler flags.
Simply include it in your project and you are ready to start!