Average Error: 0.0 → 0.0
Time: 9.7s
Precision: 64
\[a \cdot a - b \cdot b\]
↓
\[\left(b + a\right) \cdot \left(a - b\right)\]
a \cdot a - b \cdot b
↓
\left(b + a\right) \cdot \left(a - b\right)
double f(double a, double b) {
        double r4825710 = a;
        double r4825711 = r4825710 * r4825710;
        double r4825712 = b;
        double r4825713 = r4825712 * r4825712;
        double r4825714 = r4825711 - r4825713;
        return r4825714;
}
↓
double f(double a, double b) {
        double r4825715 = b;
        double r4825716 = a;
        double r4825717 = r4825715 + r4825716;
        double r4825718 = r4825716 - r4825715;
        double r4825719 = r4825717 * r4825718;
        return r4825719;
}

Error

Bits error versus a

Bits error versus b

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.0
Target0.0
Herbie0.0
\[\left(a + b\right) \cdot \left(a - b\right)\]

Derivation

  1. Initial program 0.0

    \[a \cdot a - b \cdot b\]
  2. Using strategy rm

  3. Applied difference-of-squares0.0

    \[\leadsto \color{blue}{\left(a + b\right) \cdot \left(a - b\right)}\]

  4. Final simplification0.0

    \[\leadsto \left(b + a\right) \cdot \left(a - b\right)\]

Reproduce

herbie shell --seed 2019179 +o rules:numerics
(FPCore (a b)
  :name "Difference of squares"

  :herbie-target
  (* (+ a b) (- a b))

  (- (* a a) (* b b)))