Average Error: 0.0 → 0.0
Time: 9.8s
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 r375424 = 1.0;
        double r375425 = x;
        double r375426 = r375424 / r375425;
        double r375427 = r375426 - r375424;
        double r375428 = log(r375427);
        double r375429 = -r375428;
        return r375429;
}
↓
double f(double x) {
        double r375430 = 1.0;
        double r375431 = x;
        double r375432 = r375430 / r375431;
        double r375433 = r375432 - r375430;
        double r375434 = log(r375433);
        double r375435 = -r375434;
        return r375435;
}

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 2019162 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))