Data.Random.Dice:roll from dice-0.1

Average Error: 0.0 → 0.0

Time: 309.0ms

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 r34712 = x;
        double r34713 = r34712 * r34712;
        double r34714 = 1.0;
        double r34715 = r34713 - r34714;
        return r34715;
}

↓

double f(double x) {
        double r34716 = x;
        double r34717 = r34716 * r34716;
        double r34718 = 1.0;
        double r34719 = r34717 - r34718;
        return r34719;
}

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 2020045 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  :precision binary64
  (- (* x x) 1))