Average Error: 0.3 → 0
Time: 890.0ms
Precision: 64
\[d \cdot 10 + d \cdot 20\]
↓
\[d \cdot 30\]
d \cdot 10 + d \cdot 20
↓
d \cdot 30
double f(double d) {
        double r2259271 = d;
        double r2259272 = 10.0;
        double r2259273 = r2259271 * r2259272;
        double r2259274 = 20.0;
        double r2259275 = r2259271 * r2259274;
        double r2259276 = r2259273 + r2259275;
        return r2259276;
}
↓
double f(double d) {
        double r2259277 = d;
        double r2259278 = 30.0;
        double r2259279 = r2259277 * r2259278;
        return r2259279;
}

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

    \[\leadsto \color{blue}{d \cdot 30}\]

  3. Final simplification0

    \[\leadsto d \cdot 30\]

Reproduce

herbie shell --seed 2019129 +o rules:numerics
(FPCore (d)
  :name "FastMath test1"

  :herbie-target
  (* d 30)

  (+ (* d 10) (* d 20)))