Average Error: 0.0 → 0.0
Time: 1.3s
Precision: 64
\[x \cdot \left(1 - x \cdot 0.5\right)\]
↓
\[x \cdot \left(1 - x \cdot 0.5\right)\]
x \cdot \left(1 - x \cdot 0.5\right)
↓
x \cdot \left(1 - x \cdot 0.5\right)
double f(double x) {
        double r63273 = x;
        double r63274 = 1.0;
        double r63275 = 0.5;
        double r63276 = r63273 * r63275;
        double r63277 = r63274 - r63276;
        double r63278 = r63273 * r63277;
        return r63278;
}
↓
double f(double x) {
        double r63279 = x;
        double r63280 = 1.0;
        double r63281 = 0.5;
        double r63282 = r63279 * r63281;
        double r63283 = r63280 - r63282;
        double r63284 = r63279 * r63283;
        return r63284;
}

Error

Bits error versus x

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[x \cdot \left(1 - x \cdot 0.5\right)\]

  2. Final simplification0.0

    \[\leadsto x \cdot \left(1 - x \cdot 0.5\right)\]

Reproduce

herbie shell --seed 2019199 +o rules:numerics
(FPCore (x)
  :name "Numeric.SpecFunctions:log1p from math-functions-0.1.5.2, B"
  (* x (- 1.0 (* x 0.5))))