def absolute_monotonicity_radius(self, acc=1.e-10, rmax=200, tol=3.e-16):
     r"""
         Returns the radius of absolute monotonicity
         of a TSRK method.
     """
     from nodepy.utils import bisect
     r = bisect(0, rmax, acc, tol, self.is_absolutely_monotonic)
     return r
    def absolute_monotonicity_radius(self, acc=1.0e-10, rmax=200, tol=3.0e-16):
        r"""
            Returns the radius of absolute monotonicity
            of a Runge-Kutta method.
        """
        from nodepy.utils import bisect

        r = bisect(0, rmax, acc, tol, self.is_absolutely_monotonic)
        return r