Average Error: 0.0 → 0.0
Time: 17.0s
Precision: 64
\[-\log \left(\frac{1}{x} - 1\right)\]
↓
\[-\log \left(\frac{1}{x} - 1\right)\]
-\log \left(\frac{1}{x} - 1\right)
↓
-\log \left(\frac{1}{x} - 1\right)
double f(double x) {
        double r746654 = 1.0;
        double r746655 = x;
        double r746656 = r746654 / r746655;
        double r746657 = r746656 - r746654;
        double r746658 = log(r746657);
        double r746659 = -r746658;
        return r746659;
}
↓
double f(double x) {
        double r746660 = 1.0;
        double r746661 = x;
        double r746662 = r746660 / r746661;
        double r746663 = r746662 - r746660;
        double r746664 = log(r746663);
        double r746665 = -r746664;
        return r746665;
}

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

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

  2. Final simplification0.0

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

Reproduce

herbie shell --seed 2019121 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))