Data.Random.Dice:roll from dice-0.1

Average Error: 0.0 → 0.0

Time: 340.0ms

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 r211800 = x;
        double r211801 = r211800 * r211800;
        double r211802 = 1.0;
        double r211803 = r211801 - r211802;
        return r211803;
}

↓

double f(double x) {
        double r211804 = x;
        double r211805 = r211804 * r211804;
        double r211806 = 1.0;
        double r211807 = r211805 - r211806;
        return r211807;
}

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 2020047 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  :precision binary64
  (- (* x x) 1))