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MonotoneRootSolution

gam_model_kernels::monotone_root

Struct MonotoneRootSolution 

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pub struct MonotoneRootSolution {
    pub root: f64,
    pub abs_deriv: f64,
    pub residual: f64,
    pub refine_iters: usize,
}
Expand description

Shared hybrid bracketing + Newton solver for strictly monotone calibration equations F(a) = 0.

eval(a) must return (F(a), F'(a), F''(a)). The second derivative is carried through for the caller but is not used by the solver itself.

Returns (root, |F'(root)|, F(root)). The absolute derivative is always positive and can be used directly as the density-normalising calibration derivative. Callers must validate the residual against the scale of their calibration equation.

The monotone direction (increasing vs decreasing) is inferred from the sign of F’(a) at the initial point, so the same code handles both the Bernoulli case (F increasing) and the survival case (F decreasing).

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§root: f64§abs_deriv: f64§residual: f64§refine_iters: usize

Trait Implementations§

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impl Clone for MonotoneRootSolution

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fn clone(&self) -> MonotoneRootSolution

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for MonotoneRootSolution

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impl Debug for MonotoneRootSolution

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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