bundles / scipy latest / scipy / linalg / _flapack / dtzrzf

lapack_function

`scipy.linalg._flapack:dtzrzf`

source: build-install/usr/lib/python3.14/site-packages/scipy/linalg/_flapack.cpython-314-x86_64-linux-gnu.so

Summary

Reduce an upper trapezoidal matrix to upper triangular form (LAPACK dtzrzf).

Extended Summary

Factors a as (R 0) @ Z with Z orthogonal/unitary; ormrz applies the Z this produces.

Parameters

a : ndarray: Upper trapezoidal matrix of shape (m, n) with n >= m.
lwork : int, optional: Workspace size, at least m. Default is max(m, 1).
overwrite_a : int, optional: If nonzero, a may be overwritten in place. Default is 0.

Returns

rz : ndarray: R in the leading triangle; the rest describes Z.
tau : ndarray: Reflector scalars, length m.
info : int: 0 on success; if negative, the -info-th argument had an illegal value.

Aliases

scipy.linalg._flapack.dtzrzf