Average Error: 0.0 → 0.0

Time: 839.0ms

Precision: 64

\[0 \le x \le 2\]

\[x + x \cdot x\]

↓

\[x \cdot x + x\]

x + x \cdot x

↓

x \cdot x + x

double f(double x) {
        double r3655837 = x;
        double r3655838 = r3655837 * r3655837;
        double r3655839 = r3655837 + r3655838;
        return r3655839;
}

↓

double f(double x) {
        double r3655840 = x;
        double r3655841 = r3655840 * r3655840;
        double r3655842 = r3655841 + r3655840;
        return r3655842;
}

Error

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

Try it out

In
Out

Enter valid numbers for all inputs

Target

Original	0.0
Target	0.0
Herbie	0.0

\[\left(1.0 + x\right) \cdot x\]

Derivation

Initial program 0.0
\[x + x \cdot x\]
Final simplification0.0
\[\leadsto x \cdot x + x\]

Reproduce

herbie shell --seed 2019132 
(FPCore (x)
  :name "Expression 2, p15"
  :pre (<= 0 x 2)

  :herbie-target
  (* (+ 1.0 x) x)

  (+ x (* x x)))