Average Error: 0.0 → 0.0
Time: 14.6s
Precision: 64
\[\frac{-\left(f + n\right)}{f - n}\]
↓
\[\frac{1}{\frac{f - n}{-\left(f + n\right)}}\]
\frac{-\left(f + n\right)}{f - n}
↓
\frac{1}{\frac{f - n}{-\left(f + n\right)}}
double f(double f, double n) {
        double r38242 = f;
        double r38243 = n;
        double r38244 = r38242 + r38243;
        double r38245 = -r38244;
        double r38246 = r38242 - r38243;
        double r38247 = r38245 / r38246;
        return r38247;
}
↓
double f(double f, double n) {
        double r38248 = 1.0;
        double r38249 = f;
        double r38250 = n;
        double r38251 = r38249 - r38250;
        double r38252 = r38249 + r38250;
        double r38253 = -r38252;
        double r38254 = r38251 / r38253;
        double r38255 = r38248 / r38254;
        return r38255;
}

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. Simplified0.0

    \[\leadsto \color{blue}{\frac{-\left(n + f\right)}{f - n}}\]
  3. Using strategy rm

  4. Applied clear-num0.0

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

  5. Final simplification0.0

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

Reproduce

herbie shell --seed 2019195 
(FPCore (f n)
  :name "subtraction fraction"
  (/ (- (+ f n)) (- f n)))