Average Error: 0.0 → 0.0
Time: 1.5s
Precision: 64
\[x \cdot \left(x - 1\right)\]
↓
\[x \cdot x + x \cdot \left(-1\right)\]
x \cdot \left(x - 1\right)
↓
x \cdot x + x \cdot \left(-1\right)
double f(double x) {
        double r193248 = x;
        double r193249 = 1.0;
        double r193250 = r193248 - r193249;
        double r193251 = r193248 * r193250;
        return r193251;
}
↓
double f(double x) {
        double r193252 = x;
        double r193253 = r193252 * r193252;
        double r193254 = 1.0;
        double r193255 = -r193254;
        double r193256 = r193252 * r193255;
        double r193257 = r193253 + r193256;
        return r193257;
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.0
Target0.0
Herbie0.0
\[x \cdot x - x\]

Derivation

  1. Initial program 0.0

    \[x \cdot \left(x - 1\right)\]
  2. Using strategy rm

  3. Applied sub-neg0.0

    \[\leadsto x \cdot \color{blue}{\left(x + \left(-1\right)\right)}\]

  4. Applied distribute-lft-in0.0

    \[\leadsto \color{blue}{x \cdot x + x \cdot \left(-1\right)}\]

  5. Final simplification0.0

    \[\leadsto x \cdot x + x \cdot \left(-1\right)\]

Reproduce

herbie shell --seed 2019305 +o rules:numerics
(FPCore (x)
  :name "Statistics.Correlation.Kendall:numOfTiesBy from math-functions-0.1.5.2"
  :precision binary64

  :herbie-target
  (- (* x x) x)

  (* x (- x 1)))