Average Error: 1.0 → 0.0
Time: 2.1m
Precision: 64
\[\frac{4}{\left(\left(3 \cdot \pi\right) \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{2 - 6 \cdot \left(v \cdot v\right)}}\]
\[\frac{\frac{\frac{4}{3}}{\pi - \left(v \cdot v\right) \cdot \pi}}{\sqrt{4 - \left(v \cdot \left(v \cdot -6\right)\right) \cdot \left(v \cdot \left(v \cdot -6\right)\right)}} \cdot \sqrt{2 - v \cdot \left(v \cdot -6\right)}\]

Error

Bits error versus v

Derivation

  1. Initial program 1.0

    \[\frac{4}{\left(\left(3 \cdot \pi\right) \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{2 - 6 \cdot \left(v \cdot v\right)}}\]
  2. Simplified0.0

    \[\leadsto \color{blue}{\frac{\frac{\frac{4}{3}}{\pi - \left(v \cdot v\right) \cdot \pi}}{\sqrt{2 + \left(v \cdot -6\right) \cdot v}}}\]
  3. Using strategy rm
  4. Applied flip-+0.0

    \[\leadsto \frac{\frac{\frac{4}{3}}{\pi - \left(v \cdot v\right) \cdot \pi}}{\sqrt{\color{blue}{\frac{2 \cdot 2 - \left(\left(v \cdot -6\right) \cdot v\right) \cdot \left(\left(v \cdot -6\right) \cdot v\right)}{2 - \left(v \cdot -6\right) \cdot v}}}}\]
  5. Applied sqrt-div1.0

    \[\leadsto \frac{\frac{\frac{4}{3}}{\pi - \left(v \cdot v\right) \cdot \pi}}{\color{blue}{\frac{\sqrt{2 \cdot 2 - \left(\left(v \cdot -6\right) \cdot v\right) \cdot \left(\left(v \cdot -6\right) \cdot v\right)}}{\sqrt{2 - \left(v \cdot -6\right) \cdot v}}}}\]
  6. Applied associate-/r/0.0

    \[\leadsto \color{blue}{\frac{\frac{\frac{4}{3}}{\pi - \left(v \cdot v\right) \cdot \pi}}{\sqrt{2 \cdot 2 - \left(\left(v \cdot -6\right) \cdot v\right) \cdot \left(\left(v \cdot -6\right) \cdot v\right)}} \cdot \sqrt{2 - \left(v \cdot -6\right) \cdot v}}\]
  7. Final simplification0.0

    \[\leadsto \frac{\frac{\frac{4}{3}}{\pi - \left(v \cdot v\right) \cdot \pi}}{\sqrt{4 - \left(v \cdot \left(v \cdot -6\right)\right) \cdot \left(v \cdot \left(v \cdot -6\right)\right)}} \cdot \sqrt{2 - v \cdot \left(v \cdot -6\right)}\]

Reproduce

herbie shell --seed 2019100 
(FPCore (v)
  :name "Falkner and Boettcher, Equation (22+)"
  (/ 4 (* (* (* 3 PI) (- 1 (* v v))) (sqrt (- 2 (* 6 (* v v)))))))