Error

Target

Derivation

1. Initial program 0.1

   \[\left(d1 \cdot \left(\left(\left(\left(\left(d1 \cdot \left(d1 \cdot d1\right)\right) \cdot d1\right) \cdot d1\right) \cdot \left(d1 \cdot d1\right)\right) \cdot d1\right)\right) \cdot d1\]
2. Using strategy rm

3. Applied pow20.1

   \[\leadsto \left(d1 \cdot \left(\left(\left(\left(\left(d1 \cdot \left(d1 \cdot d1\right)\right) \cdot d1\right) \cdot d1\right) \cdot \color{blue}{{d1}^{2}}\right) \cdot d1\right)\right) \cdot d1\]

4. Applied pow10.1

   \[\leadsto \left(d1 \cdot \left(\left(\left(\left(\left(d1 \cdot \left(d1 \cdot d1\right)\right) \cdot \color{blue}{{d1}^{1}}\right) \cdot d1\right) \cdot {d1}^{2}\right) \cdot d1\right)\right) \cdot d1\]

5. Applied pow10.1

   \[\leadsto \left(d1 \cdot \left(\left(\left(\left(\left(d1 \cdot \left(\color{blue}{{d1}^{1}} \cdot d1\right)\right) \cdot {d1}^{1}\right) \cdot d1\right) \cdot {d1}^{2}\right) \cdot d1\right)\right) \cdot d1\]

6. Applied pow-plus0.1

   \[\leadsto \left(d1 \cdot \left(\left(\left(\left(\left(d1 \cdot \color{blue}{{d1}^{\left(1 + 1\right)}}\right) \cdot {d1}^{1}\right) \cdot d1\right) \cdot {d1}^{2}\right) \cdot d1\right)\right) \cdot d1\]

7. Applied pow10.1

   \[\leadsto \left(d1 \cdot \left(\left(\left(\left(\left(\color{blue}{{d1}^{1}} \cdot {d1}^{\left(1 + 1\right)}\right) \cdot {d1}^{1}\right) \cdot d1\right) \cdot {d1}^{2}\right) \cdot d1\right)\right) \cdot d1\]

8. Applied pow-prod-up0.1

   \[\leadsto \left(d1 \cdot \left(\left(\left(\left(\color{blue}{{d1}^{\left(1 + \left(1 + 1\right)\right)}} \cdot {d1}^{1}\right) \cdot d1\right) \cdot {d1}^{2}\right) \cdot d1\right)\right) \cdot d1\]

9. Applied pow-prod-up0.1

   \[\leadsto \left(d1 \cdot \left(\left(\left(\color{blue}{{d1}^{\left(\left(1 + \left(1 + 1\right)\right) + 1\right)}} \cdot d1\right) \cdot {d1}^{2}\right) \cdot d1\right)\right) \cdot d1\]

10. Applied pow-plus0.1

    \[\leadsto \left(d1 \cdot \left(\left(\color{blue}{{d1}^{\left(\left(\left(1 + \left(1 + 1\right)\right) + 1\right) + 1\right)}} \cdot {d1}^{2}\right) \cdot d1\right)\right) \cdot d1\]

11. Applied pow-prod-up0.1

    \[\leadsto \left(d1 \cdot \left(\color{blue}{{d1}^{\left(\left(\left(\left(1 + \left(1 + 1\right)\right) + 1\right) + 1\right) + 2\right)}} \cdot d1\right)\right) \cdot d1\]

12. Simplified0.1

    \[\leadsto \left(d1 \cdot \left({d1}^{\color{blue}{7}} \cdot d1\right)\right) \cdot d1\]

13. Taylor expanded around -inf 0

    \[\leadsto \color{blue}{{d1}^{10}}\]

14. Final simplification0

    \[\leadsto {d1}^{10}\]

Reproduce

herbie shell --seed 2019094 +o rules:numerics
(FPCore (d1)
  :name "FastMath test5"

  :herbie-target
  (pow d1 10)

  (* (* d1 (* (* (* (* (* d1 (* d1 d1)) d1) d1) (* d1 d1)) d1)) d1))