Average Error: 0.0 → 0.0
Time: 815.0ms
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r9300226 = x;
        double r9300227 = r9300226 * r9300226;
        double r9300228 = 1.0;
        double r9300229 = r9300227 - r9300228;
        return r9300229;
}
↓
double f(double x) {
        double r9300230 = x;
        double r9300231 = r9300230 * r9300230;
        double r9300232 = 1.0;
        double r9300233 = r9300231 - r9300232;
        return r9300233;
}

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 2019174 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  (- (* x x) 1.0))