`scipy.signal._whittaker:_solveh_banded`

source: /scipy/signal/_whittaker.py:9

Signature

def _solveh_banded(ab, b, calc_logdet = False)

Summary

Solve the equation a @ x = b for x, where a is the Hermitian positive-definite banded matrix defined by ab.

Extended Summary

Same as scipy.linalg.solveh_banded(lower=True, check_finite=False), but: - also returns the log of the determinant and info - no error is raised if info > 0 - no input validation - only real values, no complex - only lower = True code path - always overwrite_XX = False - b only a 1-dim array

Parameters

ab : (``u`` + 1, M) array_like: Banded matrix
b : (M,) array_like: Right-hand side

Returns

x : (M,) ndarray: The solution to the system a x = b. Shape of return matches shape of b.
logdet : float: Logarithm of the determinant of ab. Returns 0 if calc_logdet=False.
info : int

Aliases

scipy.signal._whittaker._solveh_banded