extendr_api::prelude::modules::qr::col_pivoting::reconstruct

Function reconstruct

pub fn reconstruct<I, E>(
    dst: MatMut<'_, E>,
    qr_factors: MatRef<'_, E>,
    householder_factor: MatRef<'_, E>,
    col_perm: PermRef<'_, I>,
    parallelism: Parallelism<'_>,
    stack: PodStack<'_>,
)
where
    I: Index,
    E: ComplexField,
Expand description

Computes the reconstructed matrix, given its QR decomposition, and stores the result in dst.

§Panics

  • Panics if the number of columns of householder_factor isn’t the same as the minimum of the number of rows and the number of columns of qr_factors.
  • Panics if the block size is zero.
  • Panics if col_perm doesn’t have the same dimension as qr_factors.
  • Panics if dst doesn’t have the same shape as qr_factors.
  • Panics if the provided memory in stack is insufficient (see reconstruct_req).