Average Error: 0.0 → 0.0
Time: 8.8s
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 r19744 = 1.0;
        double r19745 = x;
        double r19746 = r19744 / r19745;
        double r19747 = r19746 - r19744;
        double r19748 = log(r19747);
        double r19749 = -r19748;
        return r19749;
}
↓
double f(double x) {
        double r19750 = 1.0;
        double r19751 = x;
        double r19752 = r19750 / r19751;
        double r19753 = r19752 - r19750;
        double r19754 = log(r19753);
        double r19755 = -r19754;
        return r19755;
}

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 2019298 
(FPCore (x)
  :name "neg log"
  :precision binary64
  (- (log (- (/ 1 x) 1))))