Average Error: 58.1 → 0.7
Time: 24.9s
Precision: 64
Internal Precision: 1408
\[\frac{e^{x} - e^{-x}}{2}\]
\[\frac{(\left((\left({x}^{4}\right) \cdot \frac{1}{120} + 1)_*\right) \cdot \left(x + x\right) + \left({x}^{3} \cdot \left(\frac{1}{6} + \frac{1}{6}\right)\right))_*}{2}\]

Error

Bits error versus x

Derivation

  1. Initial program 58.1

    \[\frac{e^{x} - e^{-x}}{2}\]
  2. Taylor expanded around 0 0.7

    \[\leadsto \frac{\color{blue}{\frac{1}{3} \cdot {x}^{3} + \left(\frac{1}{60} \cdot {x}^{5} + 2 \cdot x\right)}}{2}\]
  3. Applied simplify0.7

    \[\leadsto \color{blue}{\frac{(x \cdot \left((\frac{1}{3} \cdot \left(x \cdot x\right) + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_*}{2}}\]
  4. Using strategy rm
  5. Applied add-cbrt-cube39.5

    \[\leadsto \frac{\color{blue}{\sqrt[3]{\left((x \cdot \left((\frac{1}{3} \cdot \left(x \cdot x\right) + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_* \cdot (x \cdot \left((\frac{1}{3} \cdot \left(x \cdot x\right) + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_*\right) \cdot (x \cdot \left((\frac{1}{3} \cdot \left(x \cdot x\right) + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_*}}}{2}\]
  6. Applied simplify39.5

    \[\leadsto \frac{\sqrt[3]{\color{blue}{{\left((x \cdot \left((\frac{1}{3} \cdot \left(x \cdot x\right) + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_*\right)}^{3}}}}{2}\]
  7. Taylor expanded around 0 35.8

    \[\leadsto \frac{\color{blue}{\frac{1}{6} \cdot \left(e^{\log x + \log 2} \cdot {x}^{2}\right) + \left(e^{\log x + \log 2} + \frac{1}{120} \cdot \left(e^{\log x + \log 2} \cdot {x}^{4}\right)\right)}}{2}\]
  8. Applied simplify0.7

    \[\leadsto \color{blue}{\frac{(\left((\left({x}^{4}\right) \cdot \frac{1}{120} + 1)_*\right) \cdot \left(x + x\right) + \left({x}^{3} \cdot \left(\frac{1}{6} + \frac{1}{6}\right)\right))_*}{2}}\]

Runtime

Time bar (total: 24.9s)Debug logProfile

herbie shell --seed '#(1064300848 3212030778 2049303162 3567222883 2277747821 1384278011)' +o rules:numerics
(FPCore (x)
  :name "Hyperbolic sine"
  (/ (- (exp x) (exp (- x))) 2))