Average Error: 57.8 → 0.8
Time: 43.5s
Precision: 64
Internal Precision: 1344
\[\frac{e^{x} - e^{-x}}{2}\]
\[\frac{(x \cdot \left((\left({x}^{4}\right) \cdot \left(\frac{1}{120} \cdot 2\right) + 2)_*\right) + \left(\left(2 \cdot \frac{1}{6}\right) \cdot {x}^{3}\right))_*}{2}\]

Error

Bits error versus x

Derivation

  1. Initial program 57.8

    \[\frac{e^{x} - e^{-x}}{2}\]
  2. Taylor expanded around 0 0.8

    \[\leadsto \frac{\color{blue}{\frac{1}{3} \cdot {x}^{3} + \left(\frac{1}{60} \cdot {x}^{5} + 2 \cdot x\right)}}{2}\]
  3. Applied simplify0.8

    \[\leadsto \color{blue}{\frac{(x \cdot \left((\frac{1}{3} \cdot \left(x \cdot x\right) + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_*}{2}}\]
  4. Using strategy rm
  5. Applied add-cbrt-cube40.0

    \[\leadsto \frac{\color{blue}{\sqrt[3]{\left((x \cdot \left((\frac{1}{3} \cdot \left(x \cdot x\right) + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_* \cdot (x \cdot \left((\frac{1}{3} \cdot \left(x \cdot x\right) + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_*\right) \cdot (x \cdot \left((\frac{1}{3} \cdot \left(x \cdot x\right) + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_*}}}{2}\]
  6. Applied simplify40.0

    \[\leadsto \frac{\sqrt[3]{\color{blue}{{\left((x \cdot \left((\left(\frac{1}{3} \cdot x\right) \cdot x + 2)_*\right) + \left(\frac{1}{60} \cdot {x}^{5}\right))_*\right)}^{3}}}}{2}\]
  7. Taylor expanded around 0 34.8

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

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

Runtime

Time bar (total: 43.5s)Debug logProfile

herbie shell --seed '#(1071119240 1686926585 3481876196 78132896 2080707795 3185793749)' +o rules:numerics
(FPCore (x)
  :name "Hyperbolic sine"
  (/ (- (exp x) (exp (- x))) 2))