bundles / scipy latest / scipy / linalg / _flapack / dsterf

lapack_function

`scipy.linalg._flapack:dsterf`

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

Signature

def dsterf(d, e, overwrite_d = 0, overwrite_e = 0)

Summary

Compute all eigenvalues of a symmetric tridiagonal matrix by the Pal-Walker- Kahan QL/QR variant, without eigenvectors (LAPACK dsterf).

Parameters

d : ndarray: Diagonal elements of the symmetric tridiagonal matrix, length n.
e : ndarray: Off-diagonal elements, length n - 1.
overwrite_d : int, optional: If nonzero, d may be overwritten in place. Default is 0.
overwrite_e : int, optional: If nonzero, e may be overwritten in place. Default is 0.

Returns

vals : ndarray: Eigenvalues in ascending order, written over d.
info : int: 0 on success; if negative, the -info-th argument had an illegal value; if positive, the algorithm failed to converge.

Aliases

scipy.linalg._flapack.dsterf