Average Error: 0.0 → 0.0
Time: 582.0ms
Precision: 64
\[\left(x \cdot \left(y - 1\right) - y \cdot 0.5\right) + 0.918938533204673003\]
↓
\[\left(x \cdot \left(y - 1\right) - y \cdot 0.5\right) + 0.918938533204673003\]
\left(x \cdot \left(y - 1\right) - y \cdot 0.5\right) + 0.918938533204673003
↓
\left(x \cdot \left(y - 1\right) - y \cdot 0.5\right) + 0.918938533204673003
double f(double x, double y) {
        double r51706 = x;
        double r51707 = y;
        double r51708 = 1.0;
        double r51709 = r51707 - r51708;
        double r51710 = r51706 * r51709;
        double r51711 = 0.5;
        double r51712 = r51707 * r51711;
        double r51713 = r51710 - r51712;
        double r51714 = 0.918938533204673;
        double r51715 = r51713 + r51714;
        return r51715;
}
↓
double f(double x, double y) {
        double r51716 = x;
        double r51717 = y;
        double r51718 = 1.0;
        double r51719 = r51717 - r51718;
        double r51720 = r51716 * r51719;
        double r51721 = 0.5;
        double r51722 = r51717 * r51721;
        double r51723 = r51720 - r51722;
        double r51724 = 0.918938533204673;
        double r51725 = r51723 + r51724;
        return r51725;
}

Error

Bits error versus x

Bits error versus y

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[\left(x \cdot \left(y - 1\right) - y \cdot 0.5\right) + 0.918938533204673003\]

  2. Final simplification0.0

    \[\leadsto \left(x \cdot \left(y - 1\right) - y \cdot 0.5\right) + 0.918938533204673003\]

Reproduce

herbie shell --seed 2020060 
(FPCore (x y)
  :name "Numeric.SpecFunctions:logGamma from math-functions-0.1.5.2, A"
  :precision binary64
  (+ (- (* x (- y 1)) (* y 0.5)) 0.918938533204673))