Average Error: 0.0 → 0.0
Time: 5.8s
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r155840 = x;
        double r155841 = r155840 * r155840;
        double r155842 = 1.0;
        double r155843 = r155841 - r155842;
        return r155843;
}
↓
double f(double x) {
        double r155844 = x;
        double r155845 = r155844 * r155844;
        double r155846 = 1.0;
        double r155847 = r155845 - r155846;
        return r155847;
}

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

    \[x \cdot x - 1\]

  2. Final simplification0.0

    \[\leadsto x \cdot x - 1\]

Reproduce

herbie shell --seed 2019323 
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  :precision binary64
  (- (* x x) 1))