Constant BRANIN_MINIMA 

pub const BRANIN_MINIMA: [[f64; 2]; 3];

Branin’s three minima: x₀ = −π, π, 3π, where cos x₀ = −1, and x₁ the root of its squared term, b x₀² − c x₀ + r (12.275, 2.275 and 2.475).