Data.Random.Dice:roll from dice-0.1

Average Error: 0.0 → 0.0

Time: 334.0ms

Precision: 64

• Falling back on racket egraph because egg-herbie package not installed

Math

\[x \cdot x - 1\]

↓

\[x \cdot x - 1\]

C

double f(double x) {
        double r238539 = x;
        double r238540 = r238539 * r238539;
        double r238541 = 1.0;
        double r238542 = r238540 - r238541;
        return r238542;
}

↓

double f(double x) {
        double r238543 = x;
        double r238544 = r238543 * r238543;
        double r238545 = 1.0;
        double r238546 = r238544 - r238545;
        return r238546;
}

Error

Bits error versus x

Derivation

1. Initial program 0.0

   \[x \cdot x - 1\]

2. Final simplification 0.0

   \[\leadsto x \cdot x - 1\]

Reproduce

herbie shell --seed 2020042 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  :precision binary64
  (- (* x x) 1))