Average Error: 0.2 → 0.2

Time: 9.7s

Precision: 64

Internal Precision: 128

\[\frac{a}{-\cos^{-1} a}\]

↓

\[\frac{a}{-\cos^{-1} a}\]

Error

The X axis uses an exponential scale — Bits error versus a

The X axis uses an exponential scale — Bits error versus a

Derivation

Initial program 0.2
\[\frac{a}{-\cos^{-1} a}\]
Final simplification0.2
\[\leadsto \frac{a}{-\cos^{-1} a}\]

Reproduce

herbie shell --seed 2019053 +o rules:numerics
(FPCore (a)
  :name "Fuzzer 001"
  (/ a (- (acos a))))