Struct ExactODE 

pub struct ExactODE {
    pub p: Box<dyn Fn(f64, f64) -> f64>,
    pub q: Box<dyn Fn(f64, f64) -> f64>,
}

An exact ODE P(x,y)dx + Q(x,y)dy = 0.

Fields

p: Box<dyn Fn(f64, f64) -> f64>

P(x, y)

q: Box<dyn Fn(f64, f64) -> f64>

Q(x, y)

Implementations

impl ExactODE

pub fn new( p: impl Fn(f64, f64) -> f64 + 'static, q: impl Fn(f64, f64) -> f64 + 'static, ) -> Self

Create a new exact-ODE candidate.

pub fn is_exact(&self) -> bool

Test exactness ∂P/∂y ≈ ∂Q/∂x at a sample point using central differences.