Enter a function of z,
in standard mathematical notation.
You're allowed the basic operations:
addition, subtraction, division, multiplication,
and exponentiation (with ^).
For conjugation write ~z,
and for absolute value write |z|.
The functions conj(z), abs(z),
and pow(z, w) do what you'd expect.
Comparison operators use an absolute values when passed complex arguments.
For example, (imag(z) < 0) * 2 + (imag(z) > 0) * i
is a piecewise complex function.
Some standard functions are provided,
and also some not-so-standard functions like
gamma, eta, and zeta.
You can see a full list on the about page.
All functions will take principal branches,
so you will see sharp discontinuities in, for example,
sqrt(z).
Some constants are also built in:
pi, i, and e,
along with the Euler-Mascheroni constant masc.
A full list is again on the about page.