bundles / scipy latest / scipy / linalg / _flapack / zungqr

lapack_function

`scipy.linalg._flapack:zungqr`

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

Summary

Generate the orthogonal/unitary factor Q of a QR factorization (LAPACK zungqr).

Parameters

a : ndarray: The factorization the matching geqrf returned.
tau : ndarray: Reflector scalars from the matching factorization.
lwork : int, optional: Workspace size, at least n; -1 requests the query. Default is 3 * n.
overwrite_a : int, optional: If nonzero, a may be overwritten in place. Default is 0.

Returns

q : ndarray: The factor Q, overwriting a.
work : ndarray: Workspace actually used; work[0] is the optimal lwork.
info : int: 0 on success; if negative, the -info-th argument had an illegal value.

Aliases

scipy.linalg._flapack.zungqr