Trait ndarray_linalg::solve::ReciprocalConditionNum [−] [src]

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

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

Required Methods

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,
    S: Data<Elem = A>, 
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Implementors