Average Error: 0.1 → 0.1
Time: 5.8s
Precision: 64
\[x + \frac{x - y}{2}\]
↓
\[x + \frac{x - y}{2}\]
x + \frac{x - y}{2}
↓
x + \frac{x - y}{2}
double f(double x, double y) {
        double r848297 = x;
        double r848298 = y;
        double r848299 = r848297 - r848298;
        double r848300 = 2.0;
        double r848301 = r848299 / r848300;
        double r848302 = r848297 + r848301;
        return r848302;
}
↓
double f(double x, double y) {
        double r848303 = x;
        double r848304 = y;
        double r848305 = r848303 - r848304;
        double r848306 = 2.0;
        double r848307 = r848305 / r848306;
        double r848308 = r848303 + r848307;
        return r848308;
}

Error

Bits error versus x

Bits error versus y

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.1
Target0.1
Herbie0.1
\[1.5 \cdot x - 0.5 \cdot y\]

Derivation

  1. Initial program 0.1

    \[x + \frac{x - y}{2}\]

  2. Final simplification0.1

    \[\leadsto x + \frac{x - y}{2}\]

Reproduce

herbie shell --seed 2020025 +o rules:numerics
(FPCore (x y)
  :name "Graphics.Rendering.Chart.Axis.Types:hBufferRect from Chart-1.5.3"
  :precision binary64

  :herbie-target
  (- (* 1.5 x) (* 0.5 y))

  (+ x (/ (- x y) 2)))