Data.Random.Dice:roll from dice-0.1

Average Error: 0.0 → 0.0

Time: 331.0ms

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 r217019 = x;
        double r217020 = r217019 * r217019;
        double r217021 = 1.0;
        double r217022 = r217020 - r217021;
        return r217022;
}

↓

double f(double x) {
        double r217023 = x;
        double r217024 = r217023 * r217023;
        double r217025 = 1.0;
        double r217026 = r217024 - r217025;
        return r217026;
}

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 2020043 +o rules:numerics
(FPCore (x)
  :name "Data.Random.Dice:roll from dice-0.1"
  :precision binary64
  (- (* x x) 1))