Average Error: 23.3 → 12.2
Time: 28.2s
Precision: 64
Internal Precision: 1344
\[\frac{\frac{\frac{\left(\alpha + \beta\right) \cdot \left(\beta - \alpha\right)}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2.0} + 1.0}{2.0}\]
\[\frac{e^{(\frac{1}{3} \cdot \left(\log \left((\left(\frac{\beta - \alpha}{\left(2.0 + \alpha\right) + (2 \cdot i + \beta)_*}\right) \cdot \left(\frac{\beta + \alpha}{(i \cdot 2 + \alpha)_* + \beta}\right) + 1.0)_*\right)\right) + \left(\frac{2}{3} \cdot \log \left((\left(\frac{\beta - \alpha}{\left(2.0 + \alpha\right) + (2 \cdot i + \beta)_*}\right) \cdot \left(\frac{\beta + \alpha}{(i \cdot 2 + \alpha)_* + \beta}\right) + 1.0)_*\right)\right))_*}}{2.0}\]

Error

Bits error versus alpha

Bits error versus beta

Bits error versus i

Derivation

  1. Initial program 23.3

    \[\frac{\frac{\frac{\left(\alpha + \beta\right) \cdot \left(\beta - \alpha\right)}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2.0} + 1.0}{2.0}\]
  2. Initial simplification12.2

    \[\leadsto \frac{(\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\frac{\beta + \alpha}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*}{2.0}\]
  3. Using strategy rm
  4. Applied div-inv12.2

    \[\leadsto \frac{(\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \color{blue}{\left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right)} + 1.0)_*}{2.0}\]
  5. Using strategy rm
  6. Applied add-cbrt-cube12.2

    \[\leadsto \frac{\color{blue}{\sqrt[3]{\left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_* \cdot (\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right) \cdot (\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*}}}{2.0}\]
  7. Using strategy rm
  8. Applied pow1/312.2

    \[\leadsto \frac{\color{blue}{{\left(\left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_* \cdot (\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right) \cdot (\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}^{\frac{1}{3}}}}{2.0}\]
  9. Using strategy rm
  10. Applied add-exp-log12.2

    \[\leadsto \frac{{\left(\left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_* \cdot (\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right) \cdot \color{blue}{e^{\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}}\right)}^{\frac{1}{3}}}{2.0}\]
  11. Applied add-exp-log12.2

    \[\leadsto \frac{{\left(\left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_* \cdot \color{blue}{e^{\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}}\right) \cdot e^{\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}\right)}^{\frac{1}{3}}}{2.0}\]
  12. Applied add-exp-log12.2

    \[\leadsto \frac{{\left(\left(\color{blue}{e^{\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}} \cdot e^{\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}\right) \cdot e^{\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}\right)}^{\frac{1}{3}}}{2.0}\]
  13. Applied prod-exp12.2

    \[\leadsto \frac{{\left(\color{blue}{e^{\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right) + \log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}} \cdot e^{\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}\right)}^{\frac{1}{3}}}{2.0}\]
  14. Applied prod-exp12.4

    \[\leadsto \frac{{\color{blue}{\left(e^{\left(\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right) + \log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)\right) + \log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)}\right)}}^{\frac{1}{3}}}{2.0}\]
  15. Applied pow-exp12.4

    \[\leadsto \frac{\color{blue}{e^{\left(\left(\log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right) + \log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)\right) + \log \left((\left(\frac{\beta - \alpha}{\left(\beta + 2.0\right) + (2 \cdot i + \alpha)_*}\right) \cdot \left(\left(\beta + \alpha\right) \cdot \frac{1}{(2 \cdot i + \alpha)_* + \beta}\right) + 1.0)_*\right)\right) \cdot \frac{1}{3}}}}{2.0}\]
  16. Simplified12.2

    \[\leadsto \frac{e^{\color{blue}{(\frac{1}{3} \cdot \left(\log \left((\left(\frac{\beta - \alpha}{(2 \cdot i + \beta)_* + \left(\alpha + 2.0\right)}\right) \cdot \left(\frac{\alpha + \beta}{\beta + (i \cdot 2 + \alpha)_*}\right) + 1.0)_*\right)\right) + \left(\log \left((\left(\frac{\beta - \alpha}{(2 \cdot i + \beta)_* + \left(\alpha + 2.0\right)}\right) \cdot \left(\frac{\alpha + \beta}{\beta + (i \cdot 2 + \alpha)_*}\right) + 1.0)_*\right) \cdot \frac{2}{3}\right))_*}}}{2.0}\]
  17. Final simplification12.2

    \[\leadsto \frac{e^{(\frac{1}{3} \cdot \left(\log \left((\left(\frac{\beta - \alpha}{\left(2.0 + \alpha\right) + (2 \cdot i + \beta)_*}\right) \cdot \left(\frac{\beta + \alpha}{(i \cdot 2 + \alpha)_* + \beta}\right) + 1.0)_*\right)\right) + \left(\frac{2}{3} \cdot \log \left((\left(\frac{\beta - \alpha}{\left(2.0 + \alpha\right) + (2 \cdot i + \beta)_*}\right) \cdot \left(\frac{\beta + \alpha}{(i \cdot 2 + \alpha)_* + \beta}\right) + 1.0)_*\right)\right))_*}}{2.0}\]

Runtime

Time bar (total: 28.2s)Debug logProfile

BaselineHerbieOracleSpan%
Regimes12.212.211.90.30%
herbie shell --seed 2018339 +o rules:numerics
(FPCore (alpha beta i)
  :name "Octave 3.8, jcobi/2"
  :pre (and (> alpha -1) (> beta -1) (> i 0))
  (/ (+ (/ (/ (* (+ alpha beta) (- beta alpha)) (+ (+ alpha beta) (* 2 i))) (+ (+ (+ alpha beta) (* 2 i)) 2.0)) 1.0) 2.0))