@hackage hascal3.0

Hascal is both a simple but extendable calculator library for Haskell as well as a command-line program using this library.

Hascal supports addition, subtraction, multiplication, division, exponentiation, and logarithm, while it's easy to add custom operators.

Hascal also supports complex numbers. Hascal can work at an arbitrary precision. However, Hascal does not support parenthesis.