Average Error: 0.0 → 0.0
Time: 4.0s
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 r8431 = 1.0;
        double r8432 = x;
        double r8433 = r8431 / r8432;
        double r8434 = r8433 - r8431;
        double r8435 = log(r8434);
        double r8436 = -r8435;
        return r8436;
}
↓
double f(double x) {
        double r8437 = 1.0;
        double r8438 = x;
        double r8439 = r8437 / r8438;
        double r8440 = r8439 - r8437;
        double r8441 = log(r8440);
        double r8442 = -r8441;
        return r8442;
}

Error

Bits error versus x

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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 2019149 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))