Average Error: 0.0 → 0.0
Time: 15.6s
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 r604387 = 1.0;
        double r604388 = x;
        double r604389 = r604387 / r604388;
        double r604390 = r604389 - r604387;
        double r604391 = log(r604390);
        double r604392 = -r604391;
        return r604392;
}
↓
double f(double x) {
        double r604393 = 1.0;
        double r604394 = x;
        double r604395 = r604393 / r604394;
        double r604396 = r604395 - r604393;
        double r604397 = log(r604396);
        double r604398 = -r604397;
        return r604398;
}

Error

Bits error versus x

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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 2019163 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))