Average Error: 0.0 → 0.0
Time: 4.8s
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 r171676 = 1.0;
        double r171677 = x;
        double r171678 = r171676 / r171677;
        double r171679 = r171678 - r171676;
        double r171680 = log(r171679);
        double r171681 = -r171680;
        return r171681;
}
↓
double f(double x) {
        double r171682 = 1.0;
        double r171683 = x;
        double r171684 = r171682 / r171683;
        double r171685 = r171684 - r171682;
        double r171686 = log(r171685);
        double r171687 = -r171686;
        return r171687;
}

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 2019171 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1.0 x) 1.0))))