Average Error: 0.0 → 0.0
Time: 4.7s
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 r9174 = 1.0;
        double r9175 = x;
        double r9176 = r9174 / r9175;
        double r9177 = r9176 - r9174;
        double r9178 = log(r9177);
        double r9179 = -r9178;
        return r9179;
}
↓
double f(double x) {
        double r9180 = 1.0;
        double r9181 = x;
        double r9182 = r9180 / r9181;
        double r9183 = r9182 - r9180;
        double r9184 = log(r9183);
        double r9185 = -r9184;
        return r9185;
}

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 2019179 
(FPCore (x)
  :name "neg log"
  (- (log (- (/ 1.0 x) 1.0))))