Average Error: 0.0 → 0.0
Time: 11.4s
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 r2728944 = a;
        double r2728945 = r2728944 * r2728944;
        double r2728946 = b;
        double r2728947 = r2728946 * r2728946;
        double r2728948 = r2728945 - r2728947;
        return r2728948;
}
↓
double f(double a, double b) {
        double r2728949 = b;
        double r2728950 = a;
        double r2728951 = r2728949 + r2728950;
        double r2728952 = r2728950 - r2728949;
        double r2728953 = r2728951 * r2728952;
        return r2728953;
}

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 2019134 +o rules:numerics
(FPCore (a b)
  :name "Difference of squares"

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

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