Data.Random.Dice:roll from dice-0.1

Average Error: 0.0 → 0.0

Time: 311.0ms

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 r271335 = x;
        double r271336 = r271335 * r271335;
        double r271337 = 1.0;
        double r271338 = r271336 - r271337;
        return r271338;
}

↓

double f(double x) {
        double r271339 = x;
        double r271340 = r271339 * r271339;
        double r271341 = 1.0;
        double r271342 = r271340 - r271341;
        return r271342;
}

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))