Average Error: 0.0 → 0.0
Time: 6.1s
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 r160158 = 1.0;
        double r160159 = x;
        double r160160 = r160158 / r160159;
        double r160161 = r160160 - r160158;
        double r160162 = log(r160161);
        double r160163 = -r160162;
        return r160163;
}
↓
double f(double x) {
        double r160164 = 1.0;
        double r160165 = x;
        double r160166 = r160164 / r160165;
        double r160167 = r160166 - r160164;
        double r160168 = log(r160167);
        double r160169 = -r160168;
        return r160169;
}

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 2019134 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))