Average Error: 0.0 → 0.0
Time: 20.5s
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 r42166 = x;
        double r42167 = 1.0;
        double r42168 = 0.5;
        double r42169 = r42166 * r42168;
        double r42170 = r42167 - r42169;
        double r42171 = r42166 * r42170;
        return r42171;
}
↓
double f(double x) {
        double r42172 = x;
        double r42173 = 1.0;
        double r42174 = 0.5;
        double r42175 = r42172 * r42174;
        double r42176 = r42173 - r42175;
        double r42177 = r42172 * r42176;
        return r42177;
}

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 2019200 
(FPCore (x)
  :name "Numeric.SpecFunctions:log1p from math-functions-0.1.5.2, B"
  (* x (- 1 (* x 0.5))))