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

↓

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

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

↓

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

double f(double x, double y, double z) {
        double r879066 = x;
        double r879067 = y;
        double r879068 = r879066 + r879067;
        double r879069 = z;
        double r879070 = r879068 * r879069;
        return r879070;
}

↓

double f(double x, double y, double z) {
        double r879071 = y;
        double r879072 = x;
        double r879073 = r879071 + r879072;
        double r879074 = z;
        double r879075 = r879073 * r879074;
        return r879075;
}

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 2019163 
(FPCore (x y z)
  :name "Text.Parsec.Token:makeTokenParser from parsec-3.1.9, B"
  (* (+ x y) z))