Average Error: 0.0 → 0.0
Time: 23.0s
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 r709717 = 1.0;
        double r709718 = x;
        double r709719 = r709717 / r709718;
        double r709720 = r709719 - r709717;
        double r709721 = log(r709720);
        double r709722 = -r709721;
        return r709722;
}
↓
double f(double x) {
        double r709723 = 1.0;
        double r709724 = x;
        double r709725 = r709723 / r709724;
        double r709726 = r709725 - r709723;
        double r709727 = log(r709726);
        double r709728 = -r709727;
        return r709728;
}

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 2019125 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))