This is code accompanying the series of articles Building Zerocalc.

Zerocalc has commandline interface and a UI. Both support the follwing features:

** Numbers **

Numbers can have spaces and underscores:

1 000_000 3.14 15 . 123

Floats can use scientific notation:

2e-2 == 0.02

** Operators **

+ addition, - subtraction, * multiplication, / division, ^ power, % modulo

** Constants **

e, pi

** Functions **

- abs(x)                    - absolute value of x
- sin(x), cos(x), tan(x)    - x in radians
- asin(x), acos(x), atan(x) - x in radians
- ln(x), log10(x)           - natural logarithm, common logarith
- log(x, y)                 - base y logarithm
- sqrt(x)                   - square root
- root(x, y)                - y'th root of x

** Variables **

x = (1 + 2) y = x / 3