Average Error: 0.0 → 0.0
Time: 803.0ms
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r143741 = x;
        double r143742 = r143741 * r143741;
        double r143743 = 1.0;
        double r143744 = r143742 - r143743;
        return r143744;
}
↓
double f(double x) {
        double r143745 = x;
        double r143746 = r143745 * r143745;
        double r143747 = 1.0;
        double r143748 = r143746 - r143747;
        return r143748;
}

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 2019198 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  (- (* x x) 1.0))