\frac{4}{\left(\left(3 \cdot \pi\right) \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{2 - 6 \cdot \left(v \cdot v\right)}}
\begin{array}{l}
t_0 := \sqrt{1 - v \cdot v}\\
\frac{1.3333333333333333}{\pi \cdot \left(t_0 \cdot \left(t_0 \cdot \sqrt{2 - \left(v \cdot v\right) \cdot 6}\right)\right)}
\end{array}
(FPCore (v) :precision binary64 (/ 4.0 (* (* (* 3.0 PI) (- 1.0 (* v v))) (sqrt (- 2.0 (* 6.0 (* v v)))))))
(FPCore (v)
:precision binary64
(let* ((t_0 (sqrt (- 1.0 (* v v)))))
(/
1.3333333333333333
(* PI (* t_0 (* t_0 (sqrt (- 2.0 (* (* v v) 6.0)))))))))double code(double v) {
return 4.0 / (((3.0 * ((double) M_PI)) * (1.0 - (v * v))) * sqrt(2.0 - (6.0 * (v * v))));
}
double code(double v) {
double t_0 = sqrt(1.0 - (v * v));
return 1.3333333333333333 / (((double) M_PI) * (t_0 * (t_0 * sqrt(2.0 - ((v * v) * 6.0)))));
}



Bits error versus v
Results
Initial program 1.0
Simplified0.0
rmApplied add-sqr-sqrt_binary640.0
Applied associate-*l*_binary640.0
Simplified0.0
Final simplification0.0
herbie shell --seed 2021197
(FPCore (v)
:name "Falkner and Boettcher, Equation (22+)"
:precision binary64
(/ 4.0 (* (* (* 3.0 PI) (- 1.0 (* v v))) (sqrt (- 2.0 (* 6.0 (* v v)))))))