meval
pub struct CustomFuncN<S, T>(pub S, pub T, _);
A custom function of N variables.
impl<S: AsRef<str>, T: Fn(&[f64]) -> f64> Context for CustomFuncN<S, T>
fn eval_func(&self, name: &str, args: &[f64]) -> Result<f64, FuncEvalError>
fn get_var(&self, _: &str) -> Option<f64>