Average Error: 0.0 → 0.0
Time: 1.2s
Precision: 64
\[x \cdot x - 1\]
↓
\[x \cdot x - 1\]
x \cdot x - 1
↓
x \cdot x - 1
double f(double x) {
        double r13533408 = x;
        double r13533409 = r13533408 * r13533408;
        double r13533410 = 1.0;
        double r13533411 = r13533409 - r13533410;
        return r13533411;
}
↓
double f(double x) {
        double r13533412 = x;
        double r13533413 = r13533412 * r13533412;
        double r13533414 = 1.0;
        double r13533415 = r13533413 - r13533414;
        return r13533415;
}

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 2019200 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  (- (* x x) 1.0))