Average Error: 37.8 → 23.8
Time: 14.7s
Precision: 64
Internal Precision: 3392
\[0.5 \cdot \sqrt{2.0 \cdot \left(\sqrt{re \cdot re + im \cdot im} - re\right)}\]
↓
\[\begin{array}{l} \mathbf{if}\;re \le -4.0154931245915024 \cdot 10^{+150}:\\ \;\;\;\;\sqrt{\left(-2 \cdot re\right) \cdot 2.0} \cdot 0.5\\ \mathbf{elif}\;re \le 3.209341797498928 \cdot 10^{-109}:\\ \;\;\;\;0.5 \cdot \sqrt{2.0 \cdot \left(\sqrt{im \cdot im + re \cdot re} - re\right)}\\ \mathbf{elif}\;re \le 2.0581779664714897 \cdot 10^{+47}:\\ \;\;\;\;0.5 \cdot \sqrt{\left(im - re\right) \cdot 2.0}\\ \mathbf{else}:\\ \;\;\;\;0.5 \cdot \frac{\sqrt{\left(im \cdot 2.0\right) \cdot im}}{\sqrt{re + re}}\\ \end{array}\]

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. Split input into 4 regimes

  2. if re < -4.0154931245915024e+150

    1. Initial program 60.2

      \[0.5 \cdot \sqrt{2.0 \cdot \left(\sqrt{re \cdot re + im \cdot im} - re\right)}\]

    2. Initial simplification60.2

      \[\leadsto 0.5 \cdot \sqrt{\left(\sqrt{re \cdot re + im \cdot im} - re\right) \cdot 2.0}\]

    3. Taylor expanded around -inf 6.9

      \[\leadsto 0.5 \cdot \sqrt{\color{blue}{\left(-2 \cdot re\right)} \cdot 2.0}\]

    if -4.0154931245915024e+150 < re < 3.209341797498928e-109

    1. Initial program 23.0

      \[0.5 \cdot \sqrt{2.0 \cdot \left(\sqrt{re \cdot re + im \cdot im} - re\right)}\]

    2. Initial simplification23.0

      \[\leadsto 0.5 \cdot \sqrt{\left(\sqrt{re \cdot re + im \cdot im} - re\right) \cdot 2.0}\]
    3. Using strategy rm

    4. Applied +-commutative23.0

      \[\leadsto 0.5 \cdot \sqrt{\left(\sqrt{\color{blue}{im \cdot im + re \cdot re}} - re\right) \cdot 2.0}\]

    if 3.209341797498928e-109 < re < 2.0581779664714897e+47

    1. Initial program 42.2

      \[0.5 \cdot \sqrt{2.0 \cdot \left(\sqrt{re \cdot re + im \cdot im} - re\right)}\]

    2. Initial simplification42.2

      \[\leadsto 0.5 \cdot \sqrt{\left(\sqrt{re \cdot re + im \cdot im} - re\right) \cdot 2.0}\]

    3. Taylor expanded around 0 45.9

      \[\leadsto 0.5 \cdot \sqrt{\color{blue}{\left(im - re\right)} \cdot 2.0}\]

    if 2.0581779664714897e+47 < re

    1. Initial program 58.1

      \[0.5 \cdot \sqrt{2.0 \cdot \left(\sqrt{re \cdot re + im \cdot im} - re\right)}\]

    2. Initial simplification58.1

      \[\leadsto 0.5 \cdot \sqrt{\left(\sqrt{re \cdot re + im \cdot im} - re\right) \cdot 2.0}\]
    3. Using strategy rm

    4. Applied flip--58.1

      \[\leadsto 0.5 \cdot \sqrt{\color{blue}{\frac{\sqrt{re \cdot re + im \cdot im} \cdot \sqrt{re \cdot re + im \cdot im} - re \cdot re}{\sqrt{re \cdot re + im \cdot im} + re}} \cdot 2.0}\]

    5. Applied associate-*l/58.1

      \[\leadsto 0.5 \cdot \sqrt{\color{blue}{\frac{\left(\sqrt{re \cdot re + im \cdot im} \cdot \sqrt{re \cdot re + im \cdot im} - re \cdot re\right) \cdot 2.0}{\sqrt{re \cdot re + im \cdot im} + re}}}\]

    6. Applied sqrt-div58.1

      \[\leadsto 0.5 \cdot \color{blue}{\frac{\sqrt{\left(\sqrt{re \cdot re + im \cdot im} \cdot \sqrt{re \cdot re + im \cdot im} - re \cdot re\right) \cdot 2.0}}{\sqrt{\sqrt{re \cdot re + im \cdot im} + re}}}\]

    7. Simplified39.5

      \[\leadsto 0.5 \cdot \frac{\color{blue}{\sqrt{\left(im \cdot 2.0\right) \cdot im}}}{\sqrt{\sqrt{re \cdot re + im \cdot im} + re}}\]

    8. Taylor expanded around inf 23.7

      \[\leadsto 0.5 \cdot \frac{\sqrt{\left(im \cdot 2.0\right) \cdot im}}{\sqrt{\color{blue}{re} + re}}\]
  3. Recombined 4 regimes into one program.

  4. Final simplification23.8

    \[\leadsto \begin{array}{l} \mathbf{if}\;re \le -4.0154931245915024 \cdot 10^{+150}:\\ \;\;\;\;\sqrt{\left(-2 \cdot re\right) \cdot 2.0} \cdot 0.5\\ \mathbf{elif}\;re \le 3.209341797498928 \cdot 10^{-109}:\\ \;\;\;\;0.5 \cdot \sqrt{2.0 \cdot \left(\sqrt{im \cdot im + re \cdot re} - re\right)}\\ \mathbf{elif}\;re \le 2.0581779664714897 \cdot 10^{+47}:\\ \;\;\;\;0.5 \cdot \sqrt{\left(im - re\right) \cdot 2.0}\\ \mathbf{else}:\\ \;\;\;\;0.5 \cdot \frac{\sqrt{\left(im \cdot 2.0\right) \cdot im}}{\sqrt{re + re}}\\ \end{array}\]

Runtime

Time bar (total: 14.7s)Debug logProfile

herbie shell --seed 2018248 
(FPCore (re im)
  :name "math.sqrt on complex, imaginary part, im greater than 0 branch"
  (* 0.5 (sqrt (* 2.0 (- (sqrt (+ (* re re) (* im im))) re)))))