Trait CostFunction 

pub trait CostFunction {
    type Param;
    type Output;
    type Error;

    // Required method
    fn cost(&self, param: &Self::Param) -> Result<Self::Output, Self::Error>;
}

Scalar-valued objective f(x): Param → Output. The smallest problem trait: every solver binds at least on this.

Contract

• Implementor must: be a pure function of param: evaluating at the same param twice must return the same Output (or the same Err). Solvers cache costs across iterations, line searches reuse evaluations, and termination criteria assume the cost they read from the state matches what a fresh cost(param) would return.
• Implementor must not: assume any particular call order or frequency. Solvers may evaluate at exploratory points outside the accepted iterate sequence (line-search probes, Nelder-Mead reflections/contractions/shrinks, finite-difference probes).

Soft reject vs hard abort

See the module docs. Return Ok(f64::INFINITY) to reject one point; return Err(_) to abort the entire solve.

Examples

A never-fails problem uses Infallible as its error:

use basin::CostFunction;

struct Sphere;
impl CostFunction for Sphere {
    type Param = Vec<f64>;
    type Output = f64;
    type Error = std::convert::Infallible;
    fn cost(&self, x: &Vec<f64>) -> Result<f64, std::convert::Infallible> {
        Ok(x.iter().map(|xi| xi * xi).sum())
    }
}

assert_eq!(Sphere.cost(&vec![3.0, 4.0]).unwrap(), 25.0);

Required Associated Types

type Param

The parameter type the objective is defined over.

type Output

Scalar cost type. In practice f64 (see CONTRIBUTING.md’s provisional choices).

type Error

User-chosen hard-abort error. Pick std::convert::Infallible when the cost cannot fail: its niche optimization keeps Result<f64, Infallible> the same layout as bare f64 on the happy path.

Required Methods

fn cost(&self, param: &Self::Param) -> Result<Self::Output, Self::Error>

Evaluate the objective at param.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl CostFunction for Ackley<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Ackley<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Ackley<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Ackley<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for AckleyBoxed<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for AckleyBoxed<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for AckleyBoxed<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for AckleyBoxed<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Beale<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Beale<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Beale<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Beale<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Booth<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Booth<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Booth<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Booth<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for BoothBoxed<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for BoothBoxed<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for BoothBoxed<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for BoothBoxed<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for BoothBoxedResiduals<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for BoothBoxedResiduals<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for BoothBoxedResiduals<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for BoothBoxedResiduals<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for BoothResiduals<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for BoothResiduals<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for BoothResiduals<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for BoothResiduals<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for BukinN6<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for BukinN6<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for BukinN6<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for BukinN6<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for ConstrainedQuadratic<Array2<f64>, Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for ConstrainedQuadratic<DMatrix<f64>, DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for ConstrainedQuadratic<DenseMatrix, Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for ConstrainedQuadratic<Mat<f64>, Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for CrossInTray<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for CrossInTray<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for CrossInTray<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for CrossInTray<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Easom<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Easom<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Easom<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Easom<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Eggholder<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Eggholder<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Eggholder<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Eggholder<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for EqualityConstrainedQuadratic<Array2<f64>, Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for EqualityConstrainedQuadratic<DMatrix<f64>, DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for EqualityConstrainedQuadratic<DenseMatrix, Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for EqualityConstrainedQuadratic<Mat<f64>, Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for ExponentialFit<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for ExponentialFit<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for ExponentialFit<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for ExponentialFit<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for GoldsteinPrice<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for GoldsteinPrice<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for GoldsteinPrice<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for GoldsteinPrice<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Himmelblau<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Himmelblau<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Himmelblau<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Himmelblau<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for HolderTable<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for HolderTable<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for HolderTable<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for HolderTable<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Levy<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Levy<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Levy<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Levy<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for LevyBoxed<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for LevyBoxed<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for LevyBoxed<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for LevyBoxed<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Matyas<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Matyas<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Matyas<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Matyas<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for McCormick<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for McCormick<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for McCormick<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for McCormick<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Picheny<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Picheny<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Picheny<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Picheny<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for PowellSingular<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for PowellSingular<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for PowellSingular<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for PowellSingular<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Rastrigin<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Rastrigin<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Rastrigin<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Rastrigin<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for RastriginBoxed<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for RastriginBoxed<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for RastriginBoxed<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for RastriginBoxed<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Rosenbrock<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Rosenbrock<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Rosenbrock<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Rosenbrock<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for RosenbrockResiduals<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for RosenbrockResiduals<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for RosenbrockResiduals<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for RosenbrockResiduals<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for SchafferN2<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for SchafferN2<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for SchafferN2<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for SchafferN2<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for SchafferN4<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for SchafferN4<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for SchafferN4<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for SchafferN4<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for SparseLeastSquares<CscMatrix<f64>, DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for SparseLeastSquares<SparseColMat<usize, f64>, Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for SparseLeastSquaresBoxed<CscMatrix<f64>, DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for SparseLeastSquaresBoxed<SparseColMat<usize, f64>, Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Sphere<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Sphere<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Sphere<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Sphere<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for SphereBoxed<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for SphereBoxed<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for SphereBoxed<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for SphereBoxed<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Step<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Step<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Step<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Step<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for StyblinskiTang<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for StyblinskiTang<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for StyblinskiTang<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for StyblinskiTang<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for StyblinskiTangBoxed<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for StyblinskiTangBoxed<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for StyblinskiTangBoxed<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for StyblinskiTangBoxed<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for ThreeHumpCamel<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for ThreeHumpCamel<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for ThreeHumpCamel<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for ThreeHumpCamel<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl CostFunction for Zero<Array1<f64>>

Available on crate features ndarray and problems only.

type Param = ArrayBase<OwnedRepr<f64>, Dim<[usize; 1]>>

type Output = f64

type Error = Infallible

impl CostFunction for Zero<Col<f64>>

Available on crate features faer and problems only.

type Param = Col<Own<f64>>

type Output = f64

type Error = Infallible

impl CostFunction for Zero<DVector<f64>>

Available on crate features nalgebra and problems only.

type Param = Matrix<f64, Dyn, Const<1>, VecStorage<f64, Dyn, Const<1>>>

type Output = f64

type Error = Infallible

impl CostFunction for Zero<Vec<f64>>

Available on crate feature problems only.

type Param = Vec<f64>

type Output = f64

type Error = Infallible

impl<P, V, M, F> CostFunction for AugmentedLagrangian<'_, P, V, F>

where F: Scalar, P: CostFunction<Param = V, Output = F> + LinearEqualityConstraints<Param = V, Matrix = M>, M: MatVec<V>, V: ScaledAdd<F> + Dot<F> + NormSquared<F>,

type Param = V

type Output = F

type Error = <P as CostFunction>::Error

impl<P, V, M, F> CostFunction for LogBarrier<'_, P, F>

where F: Scalar, P: CostFunction<Param = V, Output = F> + LinearInequalityConstraints<Param = V, Matrix = M>, M: MatVec<V>, V: ScaledAdd<F> + NegInPlace + VectorIndex<F> + VectorLen,

type Param = V

type Output = F

type Error = <P as CostFunction>::Error

impl<P: CostFunction> CostFunction for FiniteDiff<P>

type Param = <P as CostFunction>::Param

type Output = <P as CostFunction>::Output

type Error = <P as CostFunction>::Error