Average Error: 0.0 → 0.0
Time: 1.3s
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 r5300 = 1.0;
        double r5301 = x;
        double r5302 = r5300 / r5301;
        double r5303 = r5302 - r5300;
        double r5304 = log(r5303);
        double r5305 = -r5304;
        return r5305;
}
↓
double f(double x) {
        double r5306 = 1.0;
        double r5307 = x;
        double r5308 = r5306 / r5307;
        double r5309 = r5308 - r5306;
        double r5310 = log(r5309);
        double r5311 = -r5310;
        return r5311;
}

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 2020003 
(FPCore (x)
  :name "neg log"
  :precision binary64
  (- (log (- (/ 1 x) 1))))