Average Error: 62.0 → 62.0
Time: 779.0ms
Precision: 64
\[lo \lt -1.000000000000000010979063629440455417405 \cdot 10^{308} \land hi \gt 1.000000000000000010979063629440455417405 \cdot 10^{308}\]
\[\frac{x - lo}{hi - lo}\]
↓
\[\frac{x - lo}{hi - lo}\]
\frac{x - lo}{hi - lo}
↓
\frac{x - lo}{hi - lo}
double f(double lo, double hi, double x) {
        double r7233 = x;
        double r7234 = lo;
        double r7235 = r7233 - r7234;
        double r7236 = hi;
        double r7237 = r7236 - r7234;
        double r7238 = r7235 / r7237;
        return r7238;
}
↓
double f(double lo, double hi, double x) {
        double r7239 = x;
        double r7240 = lo;
        double r7241 = r7239 - r7240;
        double r7242 = hi;
        double r7243 = r7242 - r7240;
        double r7244 = r7241 / r7243;
        return r7244;
}

Error

Bits error versus lo

Bits error versus hi

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 62.0

    \[\frac{x - lo}{hi - lo}\]

  2. Final simplification62.0

    \[\leadsto \frac{x - lo}{hi - lo}\]

Reproduce

herbie shell --seed 2019356 +o rules:numerics
(FPCore (lo hi x)
  :name "(/ (- x lo) (- hi lo))"
  :precision binary64
  :pre (and (< lo -1e+308) (> hi 1e+308))
  (/ (- x lo) (- hi lo)))