Average Error: 0.0 → 0.0
Time: 3.2s
Precision: 64
\[\left(x \cdot \left(y - 1.0\right) - y \cdot 0.5\right) + 0.918938533204673\]
↓
\[\left(\left(y - 1.0\right) \cdot x - 0.5 \cdot y\right) + 0.918938533204673\]
\left(x \cdot \left(y - 1.0\right) - y \cdot 0.5\right) + 0.918938533204673
↓
\left(\left(y - 1.0\right) \cdot x - 0.5 \cdot y\right) + 0.918938533204673
double f(double x, double y) {
        double r1295356 = x;
        double r1295357 = y;
        double r1295358 = 1.0;
        double r1295359 = r1295357 - r1295358;
        double r1295360 = r1295356 * r1295359;
        double r1295361 = 0.5;
        double r1295362 = r1295357 * r1295361;
        double r1295363 = r1295360 - r1295362;
        double r1295364 = 0.918938533204673;
        double r1295365 = r1295363 + r1295364;
        return r1295365;
}
↓
double f(double x, double y) {
        double r1295366 = y;
        double r1295367 = 1.0;
        double r1295368 = r1295366 - r1295367;
        double r1295369 = x;
        double r1295370 = r1295368 * r1295369;
        double r1295371 = 0.5;
        double r1295372 = r1295371 * r1295366;
        double r1295373 = r1295370 - r1295372;
        double r1295374 = 0.918938533204673;
        double r1295375 = r1295373 + r1295374;
        return r1295375;
}

Error

Bits error versus x

Bits error versus y

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[\left(x \cdot \left(y - 1.0\right) - y \cdot 0.5\right) + 0.918938533204673\]

  2. Final simplification0.0

    \[\leadsto \left(\left(y - 1.0\right) \cdot x - 0.5 \cdot y\right) + 0.918938533204673\]

Reproduce

herbie shell --seed 2019156 
(FPCore (x y)
  :name "Numeric.SpecFunctions:logGamma from math-functions-0.1.5.2, A"
  (+ (- (* x (- y 1.0)) (* y 0.5)) 0.918938533204673))