Average Error: 0.0 → 0.0
Time: 802.0ms
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r8906325 = x;
        double r8906326 = r8906325 * r8906325;
        double r8906327 = 1.0;
        double r8906328 = r8906326 - r8906327;
        return r8906328;
}
↓
double f(double x) {
        double r8906329 = x;
        double r8906330 = r8906329 * r8906329;
        double r8906331 = 1.0;
        double r8906332 = r8906330 - r8906331;
        return r8906332;
}

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 2019172 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  (- (* x x) 1.0))