; seed : #(1072361757 3390613284 2339397988 1175251238 145061547 3101881848)

; flags :
;   rules      = (arithmetic polynomials fractions exponents trigonometry hyperbolic complex special bools branches)
;   setup      = (simplify)
;   fn         = (cbrt)
;   generate   = (rr taylor simplify)
;   reduce     = (regimes taylor simplify avg-error binary-search branch-expressions)
;   precision  = (double fallback)

; timed out
(FPCore (f)
  :name "VandenBroeck and Keller, Equation (20)"
  (- (* (/ 1 (/ PI 4)) (log (/ (+ (exp (* (/ PI 4) f)) (exp (- (* (/ PI 4) f)))) (- (exp (* (/ PI 4) f)) (exp (- (* (/ PI 4) f)))))))))