\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}
\begin{array}{l}
t_1 := \sqrt{2 - \left(v \cdot v\right) \cdot 6}\\
\frac{1 - 5 \cdot \left(v \cdot v\right)}{t \cdot \left(\pi \cdot t_1\right) - t_1 \cdot \left(\left(v \cdot v\right) \cdot \left(t \cdot \pi\right)\right)}
\end{array}
(FPCore (v t) :precision binary64 (/ (- 1.0 (* 5.0 (* v v))) (* (* (* PI t) (sqrt (* 2.0 (- 1.0 (* 3.0 (* v v)))))) (- 1.0 (* v v)))))
(FPCore (v t)
:precision binary64
(let* ((t_1 (sqrt (- 2.0 (* (* v v) 6.0)))))
(/
(- 1.0 (* 5.0 (* v v)))
(- (* t (* PI t_1)) (* t_1 (* (* v v) (* t PI)))))))double code(double v, double t) {
return (1.0 - (5.0 * (v * v))) / (((((double) M_PI) * t) * sqrt(2.0 * (1.0 - (3.0 * (v * v))))) * (1.0 - (v * v)));
}
double code(double v, double t) {
double t_1 = sqrt(2.0 - ((v * v) * 6.0));
return (1.0 - (5.0 * (v * v))) / ((t * (((double) M_PI) * t_1)) - (t_1 * ((v * v) * (t * ((double) M_PI)))));
}



Bits error versus v



Bits error versus t
Results
Initial program 0.4
Simplified0.4
rmApplied sub-neg_binary640.4
Applied distribute-rgt-in_binary640.5
Applied distribute-rgt-in_binary640.5
Simplified0.4
Simplified0.4
Final simplification0.4
herbie shell --seed 2021190
(FPCore (v t)
:name "Falkner and Boettcher, Equation (20:1,3)"
:precision binary64
(/ (- 1.0 (* 5.0 (* v v))) (* (* (* PI t) (sqrt (* 2.0 (- 1.0 (* 3.0 (* v v)))))) (- 1.0 (* v v)))))