Expression 2, p15

Average Error: 0.0 → 0.0

Time: 335.0ms

Precision: 64

• Falling back on racket egraph because egg-herbie package not installed

\[0.0 \le x \le 2\]

Math

\[x + x \cdot x\]

↓

\[x + x \cdot x\]

C

double f(double x) {
        double r112158 = x;
        double r112159 = r112158 * r112158;
        double r112160 = r112158 + r112159;
        return r112160;
}

↓

double f(double x) {
        double r112161 = x;
        double r112162 = r112161 * r112161;
        double r112163 = r112161 + r112162;
        return r112163;
}

Error

Bits error versus x

Target

Original	0.0
Target	0.0
Herbie	0.0

\[\left(1 + x\right) \cdot x\]

Derivation

1. Initial program 0.0

   \[x + x \cdot x\]

2. Final simplification 0.0

   \[\leadsto x + x \cdot x\]

Reproduce

herbie shell --seed 2020046 
(FPCore (x)
  :name "Expression 2, p15"
  :precision binary64
  :pre (<= 0.0 x 2)

  :herbie-target
  (* (+ 1 x) x)

  (+ x (* x x)))