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function F = funm_ev(A,fun) %FUNM_EV Evaluate general matrix function via eigensystem. % F = FUNM_EV(A,FUN) evaluates the function FUN at the % square matrix A using the eigensystem of A. % This function is intended for diagonalizable matrices only % and can be numerically unstable. [V,D] = eig(A); F = V * diag(feval(fun,diag(D))) / V;