Average Error: 0.0 → 0.0

Time: 13.2s

Precision: 64

Ground Truth: 128

\[2 \cdot \tan^{-1} \left(\sqrt{\frac{1 - x}{1 + x}}\right)\]

⬇

\[2 \cdot \tan^{-1} \left(\sqrt{\frac{1 - x}{1 + x}}\right)\]

Error

The X axis may use a short exponential scale — Bits error versus x

The X axis may use a short exponential scale — Bits error versus x

Derivation

Initial program 0.0
\[2 \cdot \tan^{-1} \left(\sqrt{\frac{1 - x}{1 + x}}\right)\]
Removed slow pow expressions

Runtime

Please include this information when filing a bug report:

herbie --seed '#(948951687 4142657231 3497799756 3808261998 1053295619 3700164294)'
(FPCore (x)
  :name "arccos"
  (* 2 (atan (sqrt (/ (- 1 x) (+ 1 x))))))