# Module extendr_api::prelude::modules

๐Deprecated

## Expand description

Re-exports.

## Modulesยง

- Low level implementation of the various Cholesky-like decompositions.
- core
Deprecated Emulation layer for`faer_core`

- Low level implementation of the eigenvalue decomposition of a square diagonalizable matrix.
- Low level implementation of the LU decompositions.
- This crate provides utilities for computing and manipulating the QR factorization with and without pivoting. The QR factorization decomposes a matrix into a product of a unitary matrix $Q$ (represented using block Householder sequences), and an upper trapezoidal matrix $R$, such that their product is equal to the original matrix (or a column permutation of it in the case where column pivoting is used).
- Low level implementation of the SVD of a matrix.