Average Error: 0.0 → 0.0
Time: 6.9s
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 r50697 = x;
        double r50698 = y;
        double r50699 = 1.0;
        double r50700 = r50698 - r50699;
        double r50701 = r50697 * r50700;
        double r50702 = 0.5;
        double r50703 = r50698 * r50702;
        double r50704 = r50701 - r50703;
        double r50705 = 0.918938533204673;
        double r50706 = r50704 + r50705;
        return r50706;
}
↓
double f(double x, double y) {
        double r50707 = x;
        double r50708 = y;
        double r50709 = 1.0;
        double r50710 = r50708 - r50709;
        double r50711 = r50707 * r50710;
        double r50712 = 0.5;
        double r50713 = r50708 * r50712;
        double r50714 = r50711 - r50713;
        double r50715 = 0.918938533204673;
        double r50716 = r50714 + r50715;
        return r50716;
}

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 2020046 
(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))