Average Error: 0.0 → 0.0
Time: 2.3s
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 r9435 = 1.0;
        double r9436 = x;
        double r9437 = r9435 / r9436;
        double r9438 = r9437 - r9435;
        double r9439 = log(r9438);
        double r9440 = -r9439;
        return r9440;
}
↓
double f(double x) {
        double r9441 = 1.0;
        double r9442 = x;
        double r9443 = r9441 / r9442;
        double r9444 = r9443 - r9441;
        double r9445 = log(r9444);
        double r9446 = -r9445;
        return r9446;
}

Error

Bits error versus x

Try it out

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 2019344 
(FPCore (x)
  :name "neg log"
  :precision binary64
  (- (log (- (/ 1 x) 1))))