Average Error: 0.0 → 0.0
Time: 9.6s
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 r223835 = 1.0;
        double r223836 = x;
        double r223837 = r223835 / r223836;
        double r223838 = r223837 - r223835;
        double r223839 = log(r223838);
        double r223840 = -r223839;
        return r223840;
}
↓
double f(double x) {
        double r223841 = 1.0;
        double r223842 = x;
        double r223843 = r223841 / r223842;
        double r223844 = r223843 - r223841;
        double r223845 = log(r223844);
        double r223846 = -r223845;
        return r223846;
}

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 2019144 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))