Average Error: 0.0 → 0.0
Time: 11.7s
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 r282986 = 1.0;
        double r282987 = x;
        double r282988 = r282986 / r282987;
        double r282989 = r282988 - r282986;
        double r282990 = log(r282989);
        double r282991 = -r282990;
        return r282991;
}
↓
double f(double x) {
        double r282992 = 1.0;
        double r282993 = x;
        double r282994 = r282992 / r282993;
        double r282995 = r282994 - r282992;
        double r282996 = log(r282995);
        double r282997 = -r282996;
        return r282997;
}

Error

Bits error versus x

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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 2019133 +o rules:numerics
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))