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The Aciqra Library Of Astronomical Calculations (Aloac) is a library of theories and formulas relating to astronomy to track planets, the sun and moon as well as conversions between coordinate systems. Formerly known as Aciv.
Misc packages including a matrix application, a text based minesweeper, and simple console functions bundled to be run from a virtual console. Some packages are independently runnable. http://damf.sourceforge.net/ for more information.
This if calculator for complex numbers. It works with algebraic and trigonometrical form and has multiple memory slots. There are many mathematical functions like sin, cos and etc.