Average Error: 0.0 → 0.0
Time: 8.8s
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 r148067 = 1.0;
        double r148068 = x;
        double r148069 = r148067 / r148068;
        double r148070 = r148069 - r148067;
        double r148071 = log(r148070);
        double r148072 = -r148071;
        return r148072;
}
↓
double f(double x) {
        double r148073 = 1.0;
        double r148074 = x;
        double r148075 = r148073 / r148074;
        double r148076 = r148075 - r148073;
        double r148077 = log(r148076);
        double r148078 = -r148077;
        return r148078;
}

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 2019133 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))