Average Error: 0.3 → 0
Time: 1.2s
Precision: 64
\[d \cdot 10 + d \cdot 20\]
↓
\[\left(20 + 10\right) \cdot d\]
d \cdot 10 + d \cdot 20
↓
\left(20 + 10\right) \cdot d
double f(double d) {
        double r7901198 = d;
        double r7901199 = 10.0;
        double r7901200 = r7901198 * r7901199;
        double r7901201 = 20.0;
        double r7901202 = r7901198 * r7901201;
        double r7901203 = r7901200 + r7901202;
        return r7901203;
}
↓
double f(double d) {
        double r7901204 = 20.0;
        double r7901205 = 10.0;
        double r7901206 = r7901204 + r7901205;
        double r7901207 = d;
        double r7901208 = r7901206 * r7901207;
        return r7901208;
}

Error

Bits error versus d

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.3
Target0
Herbie0
\[d \cdot 30\]

Derivation

  1. Initial program 0.3

    \[d \cdot 10 + d \cdot 20\]

  2. Simplified0

    \[\leadsto \color{blue}{\left(10 + 20\right) \cdot d}\]

  3. Final simplification0

    \[\leadsto \left(20 + 10\right) \cdot d\]

Reproduce

herbie shell --seed 2019179 +o rules:numerics
(FPCore (d)
  :name "FastMath test1"

  :herbie-target
  (* d 30.0)

  (+ (* d 10.0) (* d 20.0)))