Trait Function2D 

pub trait Function2D: Function1D {
    // Required method
    fn second_derivative(&mut self, x: Real) -> Real;
}

A Function1D that also exposes its second derivative, for solvers that use curvature (Halley). Build one from three closures with func2d.

Required Methods

fn second_derivative(&mut self, x: Real) -> Real

f''(x).

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors