Average Error: 3.8 → 1.5
Time: 7.4m
Precision: 64
\[\frac{x}{x + y \cdot e^{2.0 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5.0}{6.0}\right) - \frac{2.0}{t \cdot 3.0}\right)\right)}}\]
\[\frac{x}{(y \cdot \left(e^{(\left(\frac{\sqrt{\sqrt{a + t}}}{\sqrt[3]{t} \cdot \sqrt[3]{t}}\right) \cdot \left(\frac{\sqrt{\sqrt{a + t}}}{\frac{\sqrt[3]{t}}{z}}\right) + \left(-\left(\frac{5.0}{6.0} + \left(a - \frac{2.0}{3.0 \cdot t}\right)\right) \cdot \left(b - c\right)\right))_* \cdot 2.0}\right) + x)_*}\]

Error

Bits error versus x

Bits error versus y

Bits error versus z

Bits error versus t

Bits error versus a

Bits error versus b

Bits error versus c

Derivation

  1. Initial program 3.8

    \[\frac{x}{x + y \cdot e^{2.0 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5.0}{6.0}\right) - \frac{2.0}{t \cdot 3.0}\right)\right)}}\]
  2. Simplified3.0

    \[\leadsto \color{blue}{\frac{x}{(y \cdot \left(e^{2.0 \cdot \left(\frac{\sqrt{a + t}}{\frac{t}{z}} - \left(\left(a - \frac{2.0}{t \cdot 3.0}\right) + \frac{5.0}{6.0}\right) \cdot \left(b - c\right)\right)}\right) + x)_*}}\]
  3. Using strategy rm
  4. Applied *-un-lft-identity3.0

    \[\leadsto \frac{x}{(y \cdot \left(e^{2.0 \cdot \left(\frac{\sqrt{a + t}}{\frac{t}{\color{blue}{1 \cdot z}}} - \left(\left(a - \frac{2.0}{t \cdot 3.0}\right) + \frac{5.0}{6.0}\right) \cdot \left(b - c\right)\right)}\right) + x)_*}\]
  5. Applied add-cube-cbrt3.0

    \[\leadsto \frac{x}{(y \cdot \left(e^{2.0 \cdot \left(\frac{\sqrt{a + t}}{\frac{\color{blue}{\left(\sqrt[3]{t} \cdot \sqrt[3]{t}\right) \cdot \sqrt[3]{t}}}{1 \cdot z}} - \left(\left(a - \frac{2.0}{t \cdot 3.0}\right) + \frac{5.0}{6.0}\right) \cdot \left(b - c\right)\right)}\right) + x)_*}\]
  6. Applied times-frac3.0

    \[\leadsto \frac{x}{(y \cdot \left(e^{2.0 \cdot \left(\frac{\sqrt{a + t}}{\color{blue}{\frac{\sqrt[3]{t} \cdot \sqrt[3]{t}}{1} \cdot \frac{\sqrt[3]{t}}{z}}} - \left(\left(a - \frac{2.0}{t \cdot 3.0}\right) + \frac{5.0}{6.0}\right) \cdot \left(b - c\right)\right)}\right) + x)_*}\]
  7. Applied add-sqr-sqrt3.0

    \[\leadsto \frac{x}{(y \cdot \left(e^{2.0 \cdot \left(\frac{\sqrt{\color{blue}{\sqrt{a + t} \cdot \sqrt{a + t}}}}{\frac{\sqrt[3]{t} \cdot \sqrt[3]{t}}{1} \cdot \frac{\sqrt[3]{t}}{z}} - \left(\left(a - \frac{2.0}{t \cdot 3.0}\right) + \frac{5.0}{6.0}\right) \cdot \left(b - c\right)\right)}\right) + x)_*}\]
  8. Applied sqrt-prod3.0

    \[\leadsto \frac{x}{(y \cdot \left(e^{2.0 \cdot \left(\frac{\color{blue}{\sqrt{\sqrt{a + t}} \cdot \sqrt{\sqrt{a + t}}}}{\frac{\sqrt[3]{t} \cdot \sqrt[3]{t}}{1} \cdot \frac{\sqrt[3]{t}}{z}} - \left(\left(a - \frac{2.0}{t \cdot 3.0}\right) + \frac{5.0}{6.0}\right) \cdot \left(b - c\right)\right)}\right) + x)_*}\]
  9. Applied times-frac2.7

    \[\leadsto \frac{x}{(y \cdot \left(e^{2.0 \cdot \left(\color{blue}{\frac{\sqrt{\sqrt{a + t}}}{\frac{\sqrt[3]{t} \cdot \sqrt[3]{t}}{1}} \cdot \frac{\sqrt{\sqrt{a + t}}}{\frac{\sqrt[3]{t}}{z}}} - \left(\left(a - \frac{2.0}{t \cdot 3.0}\right) + \frac{5.0}{6.0}\right) \cdot \left(b - c\right)\right)}\right) + x)_*}\]
  10. Applied fma-neg1.5

    \[\leadsto \frac{x}{(y \cdot \left(e^{2.0 \cdot \color{blue}{(\left(\frac{\sqrt{\sqrt{a + t}}}{\frac{\sqrt[3]{t} \cdot \sqrt[3]{t}}{1}}\right) \cdot \left(\frac{\sqrt{\sqrt{a + t}}}{\frac{\sqrt[3]{t}}{z}}\right) + \left(-\left(\left(a - \frac{2.0}{t \cdot 3.0}\right) + \frac{5.0}{6.0}\right) \cdot \left(b - c\right)\right))_*}}\right) + x)_*}\]
  11. Final simplification1.5

    \[\leadsto \frac{x}{(y \cdot \left(e^{(\left(\frac{\sqrt{\sqrt{a + t}}}{\sqrt[3]{t} \cdot \sqrt[3]{t}}\right) \cdot \left(\frac{\sqrt{\sqrt{a + t}}}{\frac{\sqrt[3]{t}}{z}}\right) + \left(-\left(\frac{5.0}{6.0} + \left(a - \frac{2.0}{3.0 \cdot t}\right)\right) \cdot \left(b - c\right)\right))_* \cdot 2.0}\right) + x)_*}\]

Reproduce

herbie shell --seed 2019100 +o rules:numerics
(FPCore (x y z t a b c)
  :name "Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2"
  (/ x (+ x (* y (exp (* 2.0 (- (/ (* z (sqrt (+ t a))) t) (* (- b c) (- (+ a (/ 5.0 6.0)) (/ 2.0 (* t 3.0)))))))))))