Average Error: 61.3 → 61.3
Time: 5.4s
Precision: binary64
\[\frac{\log \left(1 - x\right)}{\log \left(1 + x\right)}\]
↓
\[\frac{\log \left(1 - x\right)}{\log \left(1 + x\right)}\]
\frac{\log \left(1 - x\right)}{\log \left(1 + x\right)}
↓
\frac{\log \left(1 - x\right)}{\log \left(1 + x\right)}
double code(double x) {
	return ((double) (((double) log(((double) (1.0 - x)))) / ((double) log(((double) (1.0 + x))))));
}
↓
double code(double x) {
	return ((double) (((double) log(((double) (1.0 - x)))) / ((double) log(((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 61.3

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

  2. Final simplification61.3

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

Reproduce

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