Average Error: 0.0 → 0.0
Time: 9.4s
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 r394880 = 1.0;
        double r394881 = x;
        double r394882 = r394880 / r394881;
        double r394883 = r394882 - r394880;
        double r394884 = log(r394883);
        double r394885 = -r394884;
        return r394885;
}
↓
double f(double x) {
        double r394886 = 1.0;
        double r394887 = x;
        double r394888 = r394886 / r394887;
        double r394889 = r394888 - r394886;
        double r394890 = log(r394889);
        double r394891 = -r394890;
        return r394891;
}

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 2019172 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1.0 x) 1.0))))