Average Error: 0.0 → 0.0
Time: 8.0s
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 r456511 = 1.0;
        double r456512 = x;
        double r456513 = r456511 / r456512;
        double r456514 = r456513 - r456511;
        double r456515 = log(r456514);
        double r456516 = -r456515;
        return r456516;
}
↓
double f(double x) {
        double r456517 = 1.0;
        double r456518 = x;
        double r456519 = r456517 / r456518;
        double r456520 = r456519 - r456517;
        double r456521 = log(r456520);
        double r456522 = -r456521;
        return r456522;
}

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))))