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SciNim / Unchained

A fully type safe, compile time only units library.
https://scinim.github.io/Unchained
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Some more astronomical units & arc units #43

Closed Vindaar closed 1 year ago

Vindaar commented 1 year ago

Note the change to the definition of 1 year!

* v0.3.8
- add some more astronomical units:
  - ~AstronomicalUnit~, ~AU~
  - ~LightYear~, ~ly~
  - ~Parsec~, ~parsec~ (not ~pc~ due to pico coulomb)
- add degree related units:
  - ~ArcMinute~, ~arcmin~
  - ~ArcSecond~, ~arcsec~
- *BREAKING*: Change definition of 1 year from 365 days to 365.25 days
  (1 Julian year), matching definition of a light year. Otherwise they
  would disagree if computed "by hand" using our units.  More precise,
  but of course highly dependent on your calendar / definitions
  -> For these time units it would probably be best to have different sets of units
  / unit systems, i.e. GregorianYear etc.
  Anyone dealing with time units should be aware that these things are
  tricky and best be dealt with _given their specific application_!