Average Error: 30.6 → 0.7
Time: 37.1s
Precision: 64
Internal Precision: 576
\[\frac{\log \left(\sqrt{re \cdot re + im \cdot im}\right)}{\log 10}\]
\[\sqrt[3]{{\left(\frac{1}{\sqrt{\log 10}} \cdot \frac{\log \left(\sqrt{re^2 + im^2}^*\right)}{\sqrt{\log 10}}\right)}^{3}}\]

Error

Bits error versus re

Bits error versus im

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 30.6

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

    \[\leadsto \frac{\log \left(\sqrt{re^2 + im^2}^*\right)}{\log 10}\]
  3. Using strategy rm
  4. Applied add-cbrt-cube1.5

    \[\leadsto \frac{\log \left(\sqrt{re^2 + im^2}^*\right)}{\color{blue}{\sqrt[3]{\left(\log 10 \cdot \log 10\right) \cdot \log 10}}}\]
  5. Applied add-cbrt-cube1.3

    \[\leadsto \frac{\color{blue}{\sqrt[3]{\left(\log \left(\sqrt{re^2 + im^2}^*\right) \cdot \log \left(\sqrt{re^2 + im^2}^*\right)\right) \cdot \log \left(\sqrt{re^2 + im^2}^*\right)}}}{\sqrt[3]{\left(\log 10 \cdot \log 10\right) \cdot \log 10}}\]
  6. Applied cbrt-undiv0.7

    \[\leadsto \color{blue}{\sqrt[3]{\frac{\left(\log \left(\sqrt{re^2 + im^2}^*\right) \cdot \log \left(\sqrt{re^2 + im^2}^*\right)\right) \cdot \log \left(\sqrt{re^2 + im^2}^*\right)}{\left(\log 10 \cdot \log 10\right) \cdot \log 10}}}\]
  7. Simplified0.7

    \[\leadsto \sqrt[3]{\color{blue}{{\left(\frac{\log \left(\sqrt{re^2 + im^2}^*\right)}{\log 10}\right)}^{3}}}\]
  8. Using strategy rm
  9. Applied add-sqr-sqrt0.7

    \[\leadsto \sqrt[3]{{\left(\frac{\log \left(\sqrt{re^2 + im^2}^*\right)}{\color{blue}{\sqrt{\log 10} \cdot \sqrt{\log 10}}}\right)}^{3}}\]
  10. Applied *-un-lft-identity0.7

    \[\leadsto \sqrt[3]{{\left(\frac{\color{blue}{1 \cdot \log \left(\sqrt{re^2 + im^2}^*\right)}}{\sqrt{\log 10} \cdot \sqrt{\log 10}}\right)}^{3}}\]
  11. Applied times-frac0.7

    \[\leadsto \sqrt[3]{{\color{blue}{\left(\frac{1}{\sqrt{\log 10}} \cdot \frac{\log \left(\sqrt{re^2 + im^2}^*\right)}{\sqrt{\log 10}}\right)}}^{3}}\]
  12. Final simplification0.7

    \[\leadsto \sqrt[3]{{\left(\frac{1}{\sqrt{\log 10}} \cdot \frac{\log \left(\sqrt{re^2 + im^2}^*\right)}{\sqrt{\log 10}}\right)}^{3}}\]

Runtime

Time bar (total: 37.1s)Debug logProfile

BaselineHerbieOracleSpan%
Regimes0.70.70.00.60%
herbie shell --seed 2018340 +o rules:numerics
(FPCore (re im)
  :name "math.log10 on complex, real part"
  (/ (log (sqrt (+ (* re re) (* im im)))) (log 10)))