C(q4) = g(4 s(q4)) = [0.853343568496049 +/- 3.51e-16]  < 0.853344: True
q* = [0.133973760383006 +/- 4.75e-16]  gap length q4 - q* = [8.35833e-7 +/- 4.46e-13]
  check: on the gap, g(3 s) < g(4 s): True
  check: on the gap, g(5 s) < g(4 s): True
C_5 = 0.855100455 >= 0.855100: True
C_6 = 0.855984489 >= 0.855984: True
RQ-B Remark 4.5(3): 1/sqrt(4 s(q4)) = [1.318343562 +/- 3.51e-10] (the text says theta <= 1.318 is necessary)
