Average Error: 29.9 → 29.9
Time: 3.1s
Precision: binary64
\[\cos^{-1} \left(\cos x\right)\]
↓
\[\cos^{-1} \left(\cos x\right)\]
\cos^{-1} \left(\cos x\right)
↓
\cos^{-1} \left(\cos x\right)
double code(double x) {
	return ((double) acos(((double) cos(x))));
}
↓
double code(double x) {
	return ((double) acos(((double) cos(x))));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 29.9

    \[\cos^{-1} \left(\cos x\right)\]

  2. Final simplification29.9

    \[\leadsto \cos^{-1} \left(\cos x\right)\]

Reproduce

herbie shell --seed 2020153 
(FPCore (x)
  :name "(acos (cos x))"
  :precision binary64
  (acos (cos x)))