Average Error: 0.0 → 0.0
Time: 18.7s
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 r33223 = 1.0;
        double r33224 = x;
        double r33225 = r33223 / r33224;
        double r33226 = r33225 - r33223;
        double r33227 = log(r33226);
        double r33228 = -r33227;
        return r33228;
}
↓
double f(double x) {
        double r33229 = 1.0;
        double r33230 = x;
        double r33231 = r33229 / r33230;
        double r33232 = r33231 - r33229;
        double r33233 = log(r33232);
        double r33234 = -r33233;
        return r33234;
}

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 2019209 
(FPCore (x)
  :name "neg log"
  :precision binary64
  (- (log (- (/ 1 x) 1))))