Average Error: 0.0 → 0.0
Time: 11.6s
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 r271579 = 1.0;
        double r271580 = x;
        double r271581 = r271579 / r271580;
        double r271582 = r271581 - r271579;
        double r271583 = log(r271582);
        double r271584 = -r271583;
        return r271584;
}
↓
double f(double x) {
        double r271585 = 1.0;
        double r271586 = x;
        double r271587 = r271585 / r271586;
        double r271588 = r271587 - r271585;
        double r271589 = log(r271588);
        double r271590 = -r271589;
        return r271590;
}

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 2019130 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))