pub(crate) mod derivative;
pub(crate) mod derivative2;
pub(crate) mod directional_derivative;
pub(crate) mod dual;
pub(crate) mod gradient;
pub(crate) mod hessian;
pub(crate) mod jacobian;
pub(crate) mod mixed_partial2;
pub(crate) mod partial_derivative;
pub(crate) mod partial2;