Average Error: 0.0 → 0.0
Time: 8.2s
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 r456509 = 1.0;
        double r456510 = x;
        double r456511 = r456509 / r456510;
        double r456512 = r456511 - r456509;
        double r456513 = log(r456512);
        double r456514 = -r456513;
        return r456514;
}
↓
double f(double x) {
        double r456515 = 1.0;
        double r456516 = x;
        double r456517 = r456515 / r456516;
        double r456518 = r456517 - r456515;
        double r456519 = log(r456518);
        double r456520 = -r456519;
        return r456520;
}

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