Supported expressions can include:
-with any custom operators added.
/with any custom operators added.
/can be disabled.
Numbers, obviously. All numbers are cast to float internally.
Functions. Function names are case insensitive alphanumeric strings that do not start with a number. They may have an optional
@prefix. Functions accept a single parameter. Custom functions can be created with a Config object.
Variables. Variable names are case insensitive alphanumeric strings that do not start with a number. They may have an optional
$prefix. Variables with and without prefix are equivalent. Also a variable can share its name with a function without collision.
'sin(x) * (coef1 + coef2)'