Average Error: 58.8 → 58.8
Time: 3.6s
Precision: binary64
\[\log \left(x + 1\right) - \log \left(x - 1\right)\]
↓
\[\log \left(x + 1\right) - \log \left(x - 1\right)\]
\log \left(x + 1\right) - \log \left(x - 1\right)
↓
\log \left(x + 1\right) - \log \left(x - 1\right)
double code(double x) {
	return ((double) (((double) log(((double) (x + 1.0)))) - ((double) log(((double) (x - 1.0))))));
}
↓
double code(double x) {
	return ((double) (((double) log(((double) (x + 1.0)))) - ((double) log(((double) (x - 1.0))))));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 58.8

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

  2. Final simplification58.8

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

Reproduce

herbie shell --seed 2020153 
(FPCore (x)
  :name "(- (log (+ x 1)) (log (- x 1)))"
  :precision binary64
  (- (log (+ x 1.0)) (log (- x 1.0))))