'Add zero mean gaussian noise to the matrix. mult is the stddev.'

def sample_gaussian(self, mult=1.0, target=None):

    if (not target):
        target = self
    err_code = _eigenmat.sample_gaussian(EigenMatrix.rnd_state_p, self.p_mat, target.p_mat, ct.c_float(mult))
    if err_code:
        raise generate_exception(err_code)
    return self
