Average Error: 0.0 → 0.0
Time: 832.0ms
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r10404518 = x;
        double r10404519 = r10404518 * r10404518;
        double r10404520 = 1.0;
        double r10404521 = r10404519 - r10404520;
        return r10404521;
}
↓
double f(double x) {
        double r10404522 = x;
        double r10404523 = r10404522 * r10404522;
        double r10404524 = 1.0;
        double r10404525 = r10404523 - r10404524;
        return r10404525;
}

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 2019179 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  (- (* x x) 1.0))