Average Error: 0.0 → 0.0
Time: 7.4s
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 r12037 = 1.0;
        double r12038 = x;
        double r12039 = r12037 / r12038;
        double r12040 = r12039 - r12037;
        double r12041 = log(r12040);
        double r12042 = -r12041;
        return r12042;
}
↓
double f(double x) {
        double r12043 = 1.0;
        double r12044 = x;
        double r12045 = r12043 / r12044;
        double r12046 = r12045 - r12043;
        double r12047 = log(r12046);
        double r12048 = -r12047;
        return r12048;
}

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 2019347 
(FPCore (x)
  :name "neg log"
  :precision binary64
  (- (log (- (/ 1 x) 1))))