Average Error: 0.0 → 0.0
Time: 4.8s
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 r171668 = 1.0;
        double r171669 = x;
        double r171670 = r171668 / r171669;
        double r171671 = r171670 - r171668;
        double r171672 = log(r171671);
        double r171673 = -r171672;
        return r171673;
}
↓
double f(double x) {
        double r171674 = 1.0;
        double r171675 = x;
        double r171676 = r171674 / r171675;
        double r171677 = r171676 - r171674;
        double r171678 = log(r171677);
        double r171679 = -r171678;
        return r171679;
}

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 2019192 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1.0 x) 1.0))))