Average Error: 0.0 → 0.0
Time: 8.2s
Precision: 64
\[a \cdot a - b \cdot b\]
↓
\[\left(a - b\right) \cdot \left(a + b\right)\]
a \cdot a - b \cdot b
↓
\left(a - b\right) \cdot \left(a + b\right)
double f(double a, double b) {
        double r95290 = a;
        double r95291 = r95290 * r95290;
        double r95292 = b;
        double r95293 = r95292 * r95292;
        double r95294 = r95291 - r95293;
        return r95294;
}
↓
double f(double a, double b) {
        double r95295 = a;
        double r95296 = b;
        double r95297 = r95295 - r95296;
        double r95298 = r95295 + r95296;
        double r95299 = r95297 * r95298;
        return r95299;
}

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. Simplified0.0

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

  3. Final simplification0.0

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

Reproduce

herbie shell --seed 2019305 +o rules:numerics
(FPCore (a b)
  :name "Difference of squares"
  :precision binary64

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

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