Average Error: 0.0 → 0.0
Time: 558.0ms
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r139836 = x;
        double r139837 = r139836 * r139836;
        double r139838 = 1.0;
        double r139839 = r139837 - r139838;
        return r139839;
}
↓
double f(double x) {
        double r139840 = x;
        double r139841 = r139840 * r139840;
        double r139842 = 1.0;
        double r139843 = r139841 - r139842;
        return r139843;
}

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 2019291 
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  :precision binary64
  (- (* x x) 1))