def sample_gaussian(self, mult=1.0, target=None):
    """
    Add zero mean gaussian noise to the matrix. mult is the stddev.
    """
    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

    Add zero mean gaussian noise to the matrix. mult is the stddev.
    
eigenmat/eigenmat.py