Average Error: 0.0 → 0.0
Time: 7.5s
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 r1899659 = a;
        double r1899660 = r1899659 * r1899659;
        double r1899661 = b;
        double r1899662 = r1899661 * r1899661;
        double r1899663 = r1899660 - r1899662;
        return r1899663;
}
↓
double f(double a, double b) {
        double r1899664 = b;
        double r1899665 = a;
        double r1899666 = r1899664 + r1899665;
        double r1899667 = r1899665 - r1899664;
        double r1899668 = r1899666 * r1899667;
        return r1899668;
}

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 2019152 
(FPCore (a b)
  :name "Difference of squares"

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

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