Average Error: 0.0 → 0.0
Time: 368.0ms
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r253719 = x;
        double r253720 = r253719 * r253719;
        double r253721 = 1.0;
        double r253722 = r253720 - r253721;
        return r253722;
}
↓
double f(double x) {
        double r253723 = x;
        double r253724 = r253723 * r253723;
        double r253725 = 1.0;
        double r253726 = r253724 - r253725;
        return r253726;
}

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 2020002 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  :precision binary64
  (- (* x x) 1))