Average Error: 0.0 → 0.0
Time: 1.9s
Precision: binary64
\[\tan^{-1} \left(\pi - \cos x\right)\]
↓
\[\tan^{-1} \left(\pi - \cos x\right)\]
\tan^{-1} \left(\pi - \cos x\right)
↓
\tan^{-1} \left(\pi - \cos x\right)
double code(double x) {
	return ((double) atan(((double) (((double) M_PI) - ((double) cos(x))))));
}
↓
double code(double x) {
	return ((double) atan(((double) (((double) M_PI) - ((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 0.0

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

  2. Final simplification0.0

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

Reproduce

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