Average Error: 1.0 → 0.1
Time: 14.1s
Precision: 64
Internal Precision: 576
\[2 \cdot \cos \left(\frac{2 \cdot \pi}{3} + \frac{\cos^{-1} \left(\frac{-g}{h}\right)}{3}\right)\]
\[2 \cdot \left(\cos \left(\frac{\cos^{-1} \left(-\frac{g}{h}\right)}{3}\right) \cdot \cos \left(\frac{2}{3} \cdot \pi\right) - \sin \left(\frac{\sqrt{\cos^{-1} \left(-\frac{g}{h}\right)}}{\frac{3}{\sqrt[3]{\sqrt{\cos^{-1} \left(-\frac{g}{h}\right)}} \cdot \left(\sqrt[3]{\sqrt{\cos^{-1} \left(-\frac{g}{h}\right)}} \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(-\frac{g}{h}\right)}}\right)}}\right) \cdot \sin \left(\frac{2}{3} \cdot \pi\right)\right)\]

Error

Bits error versus g

Bits error versus h

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Your Program's Arguments

Results

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Derivation

  1. Initial program 1.0

    \[2 \cdot \cos \left(\frac{2 \cdot \pi}{3} + \frac{\cos^{-1} \left(\frac{-g}{h}\right)}{3}\right)\]
  2. Initial simplification1.0

    \[\leadsto \cos \left((\left(\frac{2}{3}\right) \cdot \pi + \left(\frac{\cos^{-1} \left(\frac{-g}{h}\right)}{3}\right))_*\right) \cdot 2\]
  3. Using strategy rm
  4. Applied add-sqr-sqrt1.0

    \[\leadsto \cos \left((\left(\frac{2}{3}\right) \cdot \pi + \left(\frac{\color{blue}{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)} \cdot \sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}}{3}\right))_*\right) \cdot 2\]
  5. Applied associate-/l*1.0

    \[\leadsto \cos \left((\left(\frac{2}{3}\right) \cdot \pi + \color{blue}{\left(\frac{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}{\frac{3}{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}}\right)})_*\right) \cdot 2\]
  6. Using strategy rm
  7. Applied add-cube-cbrt1.0

    \[\leadsto \cos \left((\left(\frac{2}{3}\right) \cdot \pi + \left(\frac{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}{\frac{3}{\color{blue}{\left(\sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}} \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}\right) \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}}}}\right))_*\right) \cdot 2\]
  8. Using strategy rm
  9. Applied fma-udef1.0

    \[\leadsto \cos \color{blue}{\left(\frac{2}{3} \cdot \pi + \frac{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}{\frac{3}{\left(\sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}} \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}\right) \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}}}\right)} \cdot 2\]
  10. Applied cos-sum1.0

    \[\leadsto \color{blue}{\left(\cos \left(\frac{2}{3} \cdot \pi\right) \cdot \cos \left(\frac{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}{\frac{3}{\left(\sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}} \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}\right) \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}}}\right) - \sin \left(\frac{2}{3} \cdot \pi\right) \cdot \sin \left(\frac{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}{\frac{3}{\left(\sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}} \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}\right) \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}}}\right)\right)} \cdot 2\]
  11. Simplified0.1

    \[\leadsto \left(\color{blue}{\cos \left(\frac{2}{3} \cdot \pi\right) \cdot \cos \left(\frac{\cos^{-1} \left(-\frac{g}{h}\right)}{3}\right)} - \sin \left(\frac{2}{3} \cdot \pi\right) \cdot \sin \left(\frac{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}{\frac{3}{\left(\sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}} \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}\right) \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(\frac{-g}{h}\right)}}}}\right)\right) \cdot 2\]
  12. Final simplification0.1

    \[\leadsto 2 \cdot \left(\cos \left(\frac{\cos^{-1} \left(-\frac{g}{h}\right)}{3}\right) \cdot \cos \left(\frac{2}{3} \cdot \pi\right) - \sin \left(\frac{\sqrt{\cos^{-1} \left(-\frac{g}{h}\right)}}{\frac{3}{\sqrt[3]{\sqrt{\cos^{-1} \left(-\frac{g}{h}\right)}} \cdot \left(\sqrt[3]{\sqrt{\cos^{-1} \left(-\frac{g}{h}\right)}} \cdot \sqrt[3]{\sqrt{\cos^{-1} \left(-\frac{g}{h}\right)}}\right)}}\right) \cdot \sin \left(\frac{2}{3} \cdot \pi\right)\right)\]

Runtime

Time bar (total: 14.1s)Debug logProfile

herbie shell --seed 2018219 +o rules:numerics
(FPCore (g h)
  :name "2-ancestry mixing, negative discriminant"
  (* 2 (cos (+ (/ (* 2 PI) 3) (/ (acos (/ (- g) h)) 3)))))