Exception for Falkner and Boettcher, Appendix B, 2

Math

\[\left(\frac{\sqrt{2}}{4} \cdot \sqrt{1 - 3 \cdot \left(v \cdot v\right)}\right) \cdot \left(1 - v \cdot v\right)\]

C

double f(double v) {
        double r246945 = 2.0;
        double r246946 = sqrt(r246945);
        double r246947 = 4.0;
        double r246948 = r246946 / r246947;
        double r246949 = 1.0;
        double r246950 = 3.0;
        double r246951 = v;
        double r246952 = r246951 * r246951;
        double r246953 = r246950 * r246952;
        double r246954 = r246949 - r246953;
        double r246955 = sqrt(r246954);
        double r246956 = r246948 * r246955;
        double r246957 = r246949 - r246952;
        double r246958 = r246956 * r246957;
        return r246958;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019323 
(FPCore (v)
  :name "Falkner and Boettcher, Appendix B, 2"
  :precision binary64
  (* (* (/ (sqrt 2) 4) (sqrt (- 1 (* 3 (* v v))))) (- 1 (* v v))))

Backtrace

get-representation: Unknown representation real		L	C
(unnamed)	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/core/regimes.rkt	65	3
filter	/opt/racket-7.2/collects/racket/private/list.rkt	256	2
infer-splitpoints	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/core/regimes.rkt	34	0
get-final-combination	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/mainloop.rkt	369	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28