Average Error: 0.0 → 0.0
Time: 3.6s
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 r8516 = 1.0;
        double r8517 = x;
        double r8518 = r8516 / r8517;
        double r8519 = r8518 - r8516;
        double r8520 = log(r8519);
        double r8521 = -r8520;
        return r8521;
}
↓
double f(double x) {
        double r8522 = 1.0;
        double r8523 = x;
        double r8524 = r8522 / r8523;
        double r8525 = r8524 - r8522;
        double r8526 = log(r8525);
        double r8527 = -r8526;
        return r8527;
}

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 2019132 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1 x) 1))))