Average Error: 0.0 → 0.0
Time: 340.0ms
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r219981 = x;
        double r219982 = r219981 * r219981;
        double r219983 = 1.0;
        double r219984 = r219982 - r219983;
        return r219984;
}
↓
double f(double x) {
        double r219985 = x;
        double r219986 = r219985 * r219985;
        double r219987 = 1.0;
        double r219988 = r219986 - r219987;
        return r219988;
}

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 2020021 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  :precision binary64
  (- (* x x) 1))