def iddr_svd(A, k):
"""
Compute SVD of a real matrix to a specified rank.
:param A:
Matrix.
:type A: :class:`numpy.ndarray`
:param k:
Rank of SVD.
:type k: int
:return:
Left singular vectors.
:rtype: :class:`numpy.ndarray`
:return:
Right singular vectors.
:rtype: :class:`numpy.ndarray`
:return:
Singular values.
:rtype: :class:`numpy.ndarray`
"""
A = np.asfortranarray(A)
U, V, S, ier = _id.iddr_svd(A, k)
if ier:
raise _RETCODE_ERROR
return U, V, S
def iddr_svd(A, k):
"""
Compute SVD of a real matrix to a specified rank.
:param A:
Matrix.
:type A: :class:`numpy.ndarray`
:param k:
Rank of SVD.
:type k: int
:return:
Left singular vectors.
:rtype: :class:`numpy.ndarray`
:return:
Right singular vectors.
:rtype: :class:`numpy.ndarray`
:return:
Singular values.
:rtype: :class:`numpy.ndarray`
"""
A = np.asfortranarray(A)
U, V, S, ier = _id.iddr_svd(A, k)
if ier:
raise _RETCODE_ERROR
return U, V, S