Average Error: 0.0 → 0.0
Time: 17.1s
Precision: 64
\[\frac{-\left(f + n\right)}{f - n}\]
↓
\[\frac{-1}{\frac{f - n}{f + n}}\]
\frac{-\left(f + n\right)}{f - n}
↓
\frac{-1}{\frac{f - n}{f + n}}
double f(double f, double n) {
        double r1234758 = f;
        double r1234759 = n;
        double r1234760 = r1234758 + r1234759;
        double r1234761 = -r1234760;
        double r1234762 = r1234758 - r1234759;
        double r1234763 = r1234761 / r1234762;
        return r1234763;
}
↓
double f(double f, double n) {
        double r1234764 = -1.0;
        double r1234765 = f;
        double r1234766 = n;
        double r1234767 = r1234765 - r1234766;
        double r1234768 = r1234765 + r1234766;
        double r1234769 = r1234767 / r1234768;
        double r1234770 = r1234764 / r1234769;
        return r1234770;
}

Error

Bits error versus f

Bits error versus n

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[\frac{-\left(f + n\right)}{f - n}\]
  2. Using strategy rm

  3. Applied neg-mul-10.0

    \[\leadsto \frac{\color{blue}{-1 \cdot \left(f + n\right)}}{f - n}\]

  4. Applied associate-/l*0.0

    \[\leadsto \color{blue}{\frac{-1}{\frac{f - n}{f + n}}}\]

  5. Final simplification0.0

    \[\leadsto \frac{-1}{\frac{f - n}{f + n}}\]

Reproduce

herbie shell --seed 2019168 
(FPCore (f n)
  :name "subtraction fraction"
  (/ (- (+ f n)) (- f n)))