Average Error: 59.4 → 59.4
Time: 2.8s
Precision: binary64
\[\cos^{-1} \left(1 - x\right)\]
↓
\[\cos^{-1} \left(1 - x\right)\]
\cos^{-1} \left(1 - x\right)
↓
\cos^{-1} \left(1 - x\right)
double code(double x) {
	return ((double) acos(((double) (1.0 - x))));
}
↓
double code(double x) {
	return ((double) acos(((double) (1.0 - x))));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 59.4

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

  2. Final simplification59.4

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

Reproduce

herbie shell --seed 2020152 
(FPCore (x)
  :name "(acos (- 1 x))"
  :precision binary64
  (acos (- 1.0 x)))