scipy.linalg.funm

scipy.linalg.funm(A, func, disp=True)

Evaluate a matrix function specified by a callable.

Returns the value of matrix-valued function f at A. The function f is an extension of the scalar-valued function func to matrices.

Parameters :

A : (N, N) array_like

Matrix at which to evaluate the function

func : callable

Callable object that evaluates a scalar function f. Must be vectorized (eg. using vectorize).

disp : bool, optional

Print warning if error in the result is estimated large instead of returning estimated error. (Default: True)

Returns :

funm : (N, N) ndarray

Value of the matrix function specified by func evaluated at A

errest : float

(if disp == False)

1-norm of the estimated error, ||err||_1 / ||A||_1