Struct cobyla::StopTols

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pub struct StopTols {
    pub ftol_rel: f64,
    pub ftol_abs: f64,
    pub xtol_rel: f64,
    pub xtol_abs: Vec<f64>,
}
Expand description

Tolerances used as termination criteria. For all, condition is disabled if value is not strictly positive.

let stop_tol = StopTols {
    ftol_rel: 1e-4,
    xtol_abs: vec![1e-3; 3],   // size should be equal to x dim
    ..StopTols::default()      // default stop conditions are disabled
};  

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§ftol_rel: f64

Relative tolerance on function value, algorithm stops when func(x) changes by less than ftol_rel * func(x)

§ftol_abs: f64

Absolute tolerance on function value, algorithm stops when func(x) change is less than ftol_rel

§xtol_rel: f64

Relative tolerance on optimization parameters, algorithm stops when all x[i] changes by less than xtol_rel * x[i]

§xtol_abs: Vec<f64>

Relative tolerance on optimization parameters, algorithm stops when x[i] changes by less than xtol_abs[i]

Trait Implementations§

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impl Clone for StopTols

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fn clone(&self) -> StopTols

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for StopTols

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

Formats the value using the given formatter. Read more
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impl Default for StopTols

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fn default() -> StopTols

Returns the “default value” for a type. Read more

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where T: 'static + ?Sized,

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That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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