Average Error: 29.2 → 29.2
Time: 865.0ms
Precision: binary64
\[\frac{1}{1 + x} - \frac{1}{1 - x}\]
↓
\[\frac{1}{1 + x} - \frac{1}{1 - x}\]
\frac{1}{1 + x} - \frac{1}{1 - x}
↓
\frac{1}{1 + x} - \frac{1}{1 - x}
double code(double x) {
	return ((double) (((double) (1.0 / ((double) (1.0 + x)))) - ((double) (1.0 / ((double) (1.0 - x))))));
}
↓
double code(double x) {
	return ((double) (((double) (1.0 / ((double) (1.0 + x)))) - ((double) (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 29.2

    \[\frac{1}{1 + x} - \frac{1}{1 - x}\]

  2. Final simplification29.2

    \[\leadsto \frac{1}{1 + x} - \frac{1}{1 - x}\]

Reproduce

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