Average Error: 0.0 → 0.0
Time: 13.4s
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 r801511 = 1.0;
        double r801512 = x;
        double r801513 = r801511 / r801512;
        double r801514 = r801513 - r801511;
        double r801515 = log(r801514);
        double r801516 = -r801515;
        return r801516;
}
↓
double f(double x) {
        double r801517 = 1.0;
        double r801518 = x;
        double r801519 = r801517 / r801518;
        double r801520 = r801519 - r801517;
        double r801521 = log(r801520);
        double r801522 = -r801521;
        return r801522;
}

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 2019170 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1.0 x) 1.0))))