Average Error: 0.0 → 0.0
Time: 7.7s
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 r133288 = 1.0;
        double r133289 = x;
        double r133290 = r133288 / r133289;
        double r133291 = r133290 - r133288;
        double r133292 = log(r133291);
        double r133293 = -r133292;
        return r133293;
}
↓
double f(double x) {
        double r133294 = 1.0;
        double r133295 = x;
        double r133296 = r133294 / r133295;
        double r133297 = r133296 - r133294;
        double r133298 = log(r133297);
        double r133299 = -r133298;
        return r133299;
}

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 2019158 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))