Average Error: 0.0 → 0.0
Time: 777.0ms
Precision: binary64
\[x - \frac{2^{x} - 2}{2 \cdot x}\]
↓
\[x - \frac{2^{x} - 2}{2 \cdot x}\]
x - \frac{2^{x} - 2}{2 \cdot x}
↓
x - \frac{2^{x} - 2}{2 \cdot x}
double code(double x) {
	return ((double) (x - ((double) (((double) (((double) exp2(x)) - 2.0)) / ((double) (2.0 * x))))));
}
↓
double code(double x) {
	return ((double) (x - ((double) (((double) (((double) exp2(x)) - 2.0)) / ((double) (2.0 * 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

    \[x - \frac{2^{x} - 2}{2 \cdot x}\]

  2. Final simplification0.0

    \[\leadsto x - \frac{2^{x} - 2}{2 \cdot x}\]

Reproduce

herbie shell --seed 2020152 
(FPCore (x)
  :name "(- x (/ (- (exp2 x) 2) (* 2 x)))"
  :precision binary64
  (- x (/ (- (exp2 x) 2.0) (* 2.0 x))))