Average Error: 0.1 → 0.1
Time: 27.4s
Precision: 64
Internal Precision: 384
\[\frac{-\left(u \cdot u\right) \cdot u}{6}\]
↓
\[\frac{-u \cdot u}{\frac{6}{u}}\]

Error

Bits error versus u

Derivation

  1. Initial program 0.1

    \[\frac{-\left(u \cdot u\right) \cdot u}{6}\]
  2. Using strategy rm

  3. Applied distribute-lft-neg-in0.1

    \[\leadsto \frac{\color{blue}{\left(-u \cdot u\right) \cdot u}}{6}\]

  4. Applied associate-/l*0.1

    \[\leadsto \color{blue}{\frac{-u \cdot u}{\frac{6}{u}}}\]

Runtime

Time bar (total: 27.4s)Debug log

herbie shell --seed '#(1743936871 1855164119 3668777427 1254258049 132811564 1366975197)' 
(FPCore (u)
  :name "bspline3"
  :pre (<= 0 u 1)
  (/ (- (* (* u u) u)) 6))