Average Error: 0.0 → 0.0
Time: 1.4s
Precision: binary64
\[\]
↓
\[\]
↓
double code(double x) {
	return ((double) (((double) (x + 1.0)) / ((double) (1.0 - x))));
}

↓
double code(double x) {
	return ((double) log(((double) exp(((double) (((double) (x + 1.0)) / ((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 0.0
    \[\]
  2. Using strategy rm
  3. Applied add-log-exp0.0
    \[\leadsto \]
  4. Final simplification0.0
    \[\leadsto \]
Reproduce
herbie shell --seed 2020191 
(FPCore (x)
  :name "Prelude:atanh from fay-base-0.20.0.1"
  :precision binary64
  (/ (+ x 1.0) (- 1.0 x)))