Trait ndarray_linalg::solve::ReciprocalConditionNum

pub trait ReciprocalConditionNum<A: Scalar> {
    // Required method
    fn rcond(&self) -> Result<A::Real>;
}

An interface for estimating the reciprocal condition number of matrix refs.

Required Methods

fn rcond(&self) -> Result<A::Real>

Estimates the reciprocal of the condition number of the matrix in 1-norm.

This method uses the LAPACK *gecon routines, which estimate self.inv().opnorm_one() and then compute rcond = 1. / (self.opnorm_one() * self.inv().opnorm_one()).

• If rcond is near 0., the matrix is badly conditioned.
• If rcond is near 1., the matrix is well conditioned.

Implementations on Foreign Types

impl<A, S> ReciprocalConditionNum<A> for ArrayBase<S, Ix2>

where A: Scalar + Lapack, S: Data<Elem = A>,

fn rcond(&self) -> Result<A::Real>

Implementors

impl<A, S> ReciprocalConditionNum<A> for LUFactorized<S>

where A: Scalar + Lapack, S: Data<Elem = A> + RawDataClone,