Average Error: 31.3 → 0.4
Time: 56.7s
Precision: 64
Internal Precision: 576
\[\frac{\log \left(\sqrt{re \cdot re + im \cdot im}\right)}{\log 10}\]
\[\sqrt{\frac{1}{\log 10}} \cdot \left(\sqrt{\frac{1}{\log 10}} \cdot \log \left(\sqrt{re^2 + im^2}^*\right)\right)\]

Error

Bits error versus re

Bits error versus im

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 31.3

    \[\frac{\log \left(\sqrt{re \cdot re + im \cdot im}\right)}{\log 10}\]
  2. Initial simplification0.6

    \[\leadsto \frac{\log \left(\sqrt{re^2 + im^2}^*\right)}{\log 10}\]
  3. Using strategy rm
  4. Applied *-un-lft-identity0.6

    \[\leadsto \frac{\color{blue}{1 \cdot \log \left(\sqrt{re^2 + im^2}^*\right)}}{\log 10}\]
  5. Applied associate-/l*0.6

    \[\leadsto \color{blue}{\frac{1}{\frac{\log 10}{\log \left(\sqrt{re^2 + im^2}^*\right)}}}\]
  6. Using strategy rm
  7. Applied pow10.6

    \[\leadsto \frac{1}{\frac{\log 10}{\log \color{blue}{\left({\left(\sqrt{re^2 + im^2}^*\right)}^{1}\right)}}}\]
  8. Applied log-pow0.6

    \[\leadsto \frac{1}{\frac{\log 10}{\color{blue}{1 \cdot \log \left(\sqrt{re^2 + im^2}^*\right)}}}\]
  9. Applied add-sqr-sqrt0.6

    \[\leadsto \frac{1}{\frac{\color{blue}{\sqrt{\log 10} \cdot \sqrt{\log 10}}}{1 \cdot \log \left(\sqrt{re^2 + im^2}^*\right)}}\]
  10. Applied times-frac0.8

    \[\leadsto \frac{1}{\color{blue}{\frac{\sqrt{\log 10}}{1} \cdot \frac{\sqrt{\log 10}}{\log \left(\sqrt{re^2 + im^2}^*\right)}}}\]
  11. Applied associate-/r*0.5

    \[\leadsto \color{blue}{\frac{\frac{1}{\frac{\sqrt{\log 10}}{1}}}{\frac{\sqrt{\log 10}}{\log \left(\sqrt{re^2 + im^2}^*\right)}}}\]
  12. Using strategy rm
  13. Applied div-inv0.6

    \[\leadsto \frac{\frac{1}{\frac{\sqrt{\log 10}}{1}}}{\color{blue}{\sqrt{\log 10} \cdot \frac{1}{\log \left(\sqrt{re^2 + im^2}^*\right)}}}\]
  14. Applied associate-/r*0.4

    \[\leadsto \color{blue}{\frac{\frac{\frac{1}{\frac{\sqrt{\log 10}}{1}}}{\sqrt{\log 10}}}{\frac{1}{\log \left(\sqrt{re^2 + im^2}^*\right)}}}\]
  15. Using strategy rm
  16. Applied div-inv0.4

    \[\leadsto \frac{\frac{\frac{1}{\frac{\sqrt{\log 10}}{1}}}{\sqrt{\log 10}}}{\color{blue}{1 \cdot \frac{1}{\log \left(\sqrt{re^2 + im^2}^*\right)}}}\]
  17. Applied add-sqr-sqrt0.4

    \[\leadsto \frac{\color{blue}{\sqrt{\frac{\frac{1}{\frac{\sqrt{\log 10}}{1}}}{\sqrt{\log 10}}} \cdot \sqrt{\frac{\frac{1}{\frac{\sqrt{\log 10}}{1}}}{\sqrt{\log 10}}}}}{1 \cdot \frac{1}{\log \left(\sqrt{re^2 + im^2}^*\right)}}\]
  18. Applied times-frac0.4

    \[\leadsto \color{blue}{\frac{\sqrt{\frac{\frac{1}{\frac{\sqrt{\log 10}}{1}}}{\sqrt{\log 10}}}}{1} \cdot \frac{\sqrt{\frac{\frac{1}{\frac{\sqrt{\log 10}}{1}}}{\sqrt{\log 10}}}}{\frac{1}{\log \left(\sqrt{re^2 + im^2}^*\right)}}}\]
  19. Simplified0.4

    \[\leadsto \color{blue}{\sqrt{\frac{1}{\log 10}}} \cdot \frac{\sqrt{\frac{\frac{1}{\frac{\sqrt{\log 10}}{1}}}{\sqrt{\log 10}}}}{\frac{1}{\log \left(\sqrt{re^2 + im^2}^*\right)}}\]
  20. Simplified0.4

    \[\leadsto \sqrt{\frac{1}{\log 10}} \cdot \color{blue}{\left(\log \left(\sqrt{re^2 + im^2}^*\right) \cdot \sqrt{\frac{1}{\log 10}}\right)}\]
  21. Final simplification0.4

    \[\leadsto \sqrt{\frac{1}{\log 10}} \cdot \left(\sqrt{\frac{1}{\log 10}} \cdot \log \left(\sqrt{re^2 + im^2}^*\right)\right)\]

Runtime

Time bar (total: 56.7s)Debug logProfile

BaselineHerbieOracleSpan%
Regimes0.40.40.00.30%
herbie shell --seed 2018297 +o rules:numerics
(FPCore (re im)
  :name "math.log10 on complex, real part"
  (/ (log (sqrt (+ (* re re) (* im im)))) (log 10)))