bundles / scipy 1.17.1 / scipy / linalg / _decomp_ldl / _ldl_get_d_and_l

function

`scipy.linalg._decomp_ldl:_ldl_get_d_and_l`

source: /scipy/linalg/_decomp_ldl.py :246

Signature

def _ldl_get_d_and_l ( ldu , pivs , lower = True , hermitian = True )

Summary

Helper function to extract the diagonal and triangular matrices for LDL.T factorization.

Parameters

ldu : ndarray: The compact output returned by the LAPACK routing
pivs : ndarray: The sanitized array of {0, 1, 2} denoting the sizes of the pivots. For every 2 there is a succeeding 0.
lower : bool, optional: If set to False, upper triangular part is considered.
hermitian : bool, optional: If set to False a symmetric complex array is assumed.

Returns

d : ndarray: The block diagonal matrix.
lu : ndarray: The upper/lower triangular matrix

Aliases

scipy.linalg._decomp_ldl._ldl_get_d_and_l