Average Error: 58.6 → 58.6
Time: 5.7s
Precision: binary64
\[\log \left(1 - e\right) - \log \left(1 + e\right)\]
↓
\[\log \left(1 - e\right) - \log \left(1 + e\right)\]
\log \left(1 - e\right) - \log \left(1 + e\right)
↓
\log \left(1 - e\right) - \log \left(1 + e\right)
double code(double e) {
	return ((double) (((double) log(((double) (1.0 - e)))) - ((double) log(((double) (1.0 + e))))));
}
↓
double code(double e) {
	return ((double) (((double) log(((double) (1.0 - e)))) - ((double) log(((double) (1.0 + e))))));
}

Error

Bits error versus e

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 58.6

    \[\log \left(1 - e\right) - \log \left(1 + e\right)\]

  2. Final simplification58.6

    \[\leadsto \log \left(1 - e\right) - \log \left(1 + e\right)\]

Reproduce

herbie shell --seed 2020152 
(FPCore (e)
  :name "(- (log (- 1 e)) (log (+ 1 e)))"
  :precision binary64
  (- (log (- 1.0 e)) (log (+ 1.0 e))))