Average Error: 0.0 → 0.0
Time: 1.2m
Precision: 64
\[\frac{-\left(f + n\right)}{f - n}\]
↓
\[\frac{-\left(n + f\right)}{f - n}\]
\frac{-\left(f + n\right)}{f - n}
↓
\frac{-\left(n + f\right)}{f - n}
double f(double f, double n) {
        double r2315082 = f;
        double r2315083 = n;
        double r2315084 = r2315082 + r2315083;
        double r2315085 = -r2315084;
        double r2315086 = r2315082 - r2315083;
        double r2315087 = r2315085 / r2315086;
        return r2315087;
}
↓
double f(double f, double n) {
        double r2315088 = n;
        double r2315089 = f;
        double r2315090 = r2315088 + r2315089;
        double r2315091 = -r2315090;
        double r2315092 = r2315089 - r2315088;
        double r2315093 = r2315091 / r2315092;
        return r2315093;
}

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. Final simplification0.0

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

Reproduce

herbie shell --seed 2019120 +o rules:numerics
(FPCore (f n)
  :name "subtraction fraction"
  (/ (- (+ f n)) (- f n)))