Average Error: 0.0 → 0.0
Time: 2.0s
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 r7033 = 1.0;
        double r7034 = x;
        double r7035 = r7033 / r7034;
        double r7036 = r7035 - r7033;
        double r7037 = log(r7036);
        double r7038 = -r7037;
        return r7038;
}
↓
double f(double x) {
        double r7039 = 1.0;
        double r7040 = x;
        double r7041 = r7039 / r7040;
        double r7042 = r7041 - r7039;
        double r7043 = log(r7042);
        double r7044 = -r7043;
        return r7044;
}

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 2020024 
(FPCore (x)
  :name "neg log"
  :precision binary64
  (- (log (- (/ 1 x) 1))))