Average Error: 0.0 → 0.0
Time: 840.0ms
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r8060621 = x;
        double r8060622 = r8060621 * r8060621;
        double r8060623 = 1.0;
        double r8060624 = r8060622 - r8060623;
        return r8060624;
}
↓
double f(double x) {
        double r8060625 = x;
        double r8060626 = r8060625 * r8060625;
        double r8060627 = 1.0;
        double r8060628 = r8060626 - r8060627;
        return r8060628;
}

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 2019171 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  (- (* x x) 1.0))