Average Error: 0 → 0
Time: 806.0ms
Precision: binary64
\[\cos^{-1} x\]
↓
\[\cos^{-1} x\]
\cos^{-1} x
↓
\cos^{-1} x
double code(double x) {
	return ((double) acos(x));
}
↓
double code(double x) {
	return ((double) acos(x));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0

    \[\cos^{-1} x\]

  2. Final simplification0

    \[\leadsto \cos^{-1} x\]

Reproduce

herbie shell --seed 2020152 
(FPCore (x)
  :name "(acos x)"
  :precision binary64
  (acos x))