Trait ReciprocalConditionNumTridiagonal 

pub trait ReciprocalConditionNumTridiagonal<A>
where
    A: Scalar,
{
    // Required method
    fn rcond_tridiagonal(&self) -> Result<<A as Scalar>::Real, LinalgError>;
}

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

Required Methods

fn rcond_tridiagonal(&self) -> Result<<A as Scalar>::Real, LinalgError>

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

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

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

Implementors

impl<A> ReciprocalConditionNumTridiagonal<A> for LUFactorizedTridiagonal<A>

where A: Scalar + Lapack,

impl<A, S> ReciprocalConditionNumTridiagonal<A> for ArrayBase<S, Dim<[usize; 2]>>

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