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

↓

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

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

↓

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

double f(double x, double y, double z) {
        double r218725 = x;
        double r218726 = y;
        double r218727 = r218725 + r218726;
        double r218728 = z;
        double r218729 = r218727 * r218728;
        return r218729;
}

↓

double f(double x, double y, double z) {
        double r218730 = y;
        double r218731 = x;
        double r218732 = r218730 + r218731;
        double r218733 = z;
        double r218734 = r218732 * r218733;
        return r218734;
}

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 2019171 
(FPCore (x y z)
  :name "Text.Parsec.Token:makeTokenParser from parsec-3.1.9, B"
  (* (+ x y) z))