Average Error: 30.1 → 17.0
Time: 4.2s
Precision: 64
Internal Precision: 320
\[\sqrt{x \cdot x + y \cdot y}\]
\[\begin{array}{l} \mathbf{if}\;x \le -5.147403001023096 \cdot 10^{+84}:\\ \;\;\;\;-x\\ \mathbf{elif}\;x \le 1.7967825844854412 \cdot 10^{+130}:\\ \;\;\;\;\sqrt{x \cdot x + y \cdot y}\\ \mathbf{else}:\\ \;\;\;\;x\\ \end{array}\]

Error

Bits error versus x

Bits error versus y

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Split input into 3 regimes
  2. if x < -5.147403001023096e+84

    1. Initial program 45.3

      \[\sqrt{x \cdot x + y \cdot y}\]
    2. Taylor expanded around -inf 10.5

      \[\leadsto \color{blue}{-1 \cdot x}\]
    3. Simplified10.5

      \[\leadsto \color{blue}{-x}\]

    if -5.147403001023096e+84 < x < 1.7967825844854412e+130

    1. Initial program 20.5

      \[\sqrt{x \cdot x + y \cdot y}\]

    if 1.7967825844854412e+130 < x

    1. Initial program 53.8

      \[\sqrt{x \cdot x + y \cdot y}\]
    2. Taylor expanded around inf 9.7

      \[\leadsto \color{blue}{x}\]
  3. Recombined 3 regimes into one program.
  4. Final simplification17.0

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \le -5.147403001023096 \cdot 10^{+84}:\\ \;\;\;\;-x\\ \mathbf{elif}\;x \le 1.7967825844854412 \cdot 10^{+130}:\\ \;\;\;\;\sqrt{x \cdot x + y \cdot y}\\ \mathbf{else}:\\ \;\;\;\;x\\ \end{array}\]

Runtime

Time bar (total: 4.2s)Debug log

herbie shell --seed '#(2775764126 3555076145 3898259844 1891440260 2599947619 1948460636)' 
(FPCore (x y)
  :name "sqrt(x*x + y*y)"
  (sqrt (+ (* x x) (* y y))))