Average Error: 0.0 → 0.0
Time: 47.5s
Precision: 64
Internal Precision: 128
\[\frac{1 + \frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}{2 + \frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}\]
\[\frac{1 + \frac{t \cdot 2}{1 + t} \cdot \frac{t \cdot 2}{1 + t}}{\log \left(\sqrt[3]{e^{\frac{t \cdot 2}{1 + t} \cdot \frac{t \cdot 2}{1 + t}} \cdot e^{\frac{t \cdot 2}{1 + t} \cdot \frac{t \cdot 2}{1 + t}}} \cdot \sqrt[3]{e^{\frac{t \cdot 2}{1 + t} \cdot \frac{t \cdot 2}{1 + t}}}\right) + 2}\]

Error

Bits error versus t

Derivation

  1. Initial program 0.0

    \[\frac{1 + \frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}{2 + \frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}\]
  2. Using strategy rm
  3. Applied add-log-exp0.0

    \[\leadsto \frac{1 + \frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}{2 + \color{blue}{\log \left(e^{\frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}\right)}}\]
  4. Using strategy rm
  5. Applied add-cube-cbrt0.0

    \[\leadsto \frac{1 + \frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}{2 + \log \color{blue}{\left(\left(\sqrt[3]{e^{\frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}} \cdot \sqrt[3]{e^{\frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}}\right) \cdot \sqrt[3]{e^{\frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}}\right)}}\]
  6. Using strategy rm
  7. Applied cbrt-unprod0.0

    \[\leadsto \frac{1 + \frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}{2 + \log \left(\color{blue}{\sqrt[3]{e^{\frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}} \cdot e^{\frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}}} \cdot \sqrt[3]{e^{\frac{2 \cdot t}{1 + t} \cdot \frac{2 \cdot t}{1 + t}}}\right)}\]
  8. Final simplification0.0

    \[\leadsto \frac{1 + \frac{t \cdot 2}{1 + t} \cdot \frac{t \cdot 2}{1 + t}}{\log \left(\sqrt[3]{e^{\frac{t \cdot 2}{1 + t} \cdot \frac{t \cdot 2}{1 + t}} \cdot e^{\frac{t \cdot 2}{1 + t} \cdot \frac{t \cdot 2}{1 + t}}} \cdot \sqrt[3]{e^{\frac{t \cdot 2}{1 + t} \cdot \frac{t \cdot 2}{1 + t}}}\right) + 2}\]

Reproduce

herbie shell --seed 2019068 
(FPCore (t)
  :name "Kahan p13 Example 1"
  (/ (+ 1 (* (/ (* 2 t) (+ 1 t)) (/ (* 2 t) (+ 1 t)))) (+ 2 (* (/ (* 2 t) (+ 1 t)) (/ (* 2 t) (+ 1 t))))))