\[\left(x + y\right) \cdot z\]

↓

\[\left(y + x\right) \cdot z\]

\left(x + y\right) \cdot z

↓

\left(y + x\right) \cdot z

double f(double x, double y, double z) {
        double r1118390 = x;
        double r1118391 = y;
        double r1118392 = r1118390 + r1118391;
        double r1118393 = z;
        double r1118394 = r1118392 * r1118393;
        return r1118394;
}

↓

double f(double x, double y, double z) {
        double r1118395 = y;
        double r1118396 = x;
        double r1118397 = r1118395 + r1118396;
        double r1118398 = z;
        double r1118399 = r1118397 * r1118398;
        return r1118399;
}

Error

The X axis uses an exponential scale — Bits error versus `x`

Try it out

In
Out

Enter valid numbers for all inputs

Derivation

Initial program 0.0
\[\left(x + y\right) \cdot z\]
Final simplification0.0
\[\leadsto \left(y + x\right) \cdot z\]

Reproduce

herbie shell --seed 2019172 
(FPCore (x y z)
  :name "Text.Parsec.Token:makeTokenParser from parsec-3.1.9, B"
  (* (+ x y) z))