Average Error: 0.3 → 0
Time: 855.0ms
Precision: 64
\[d \cdot 10 + d \cdot 20\]
↓
\[30 \cdot d\]
d \cdot 10 + d \cdot 20
↓
30 \cdot d
double f(double d) {
        double r56104973 = d;
        double r56104974 = 10.0;
        double r56104975 = r56104973 * r56104974;
        double r56104976 = 20.0;
        double r56104977 = r56104973 * r56104976;
        double r56104978 = r56104975 + r56104977;
        return r56104978;
}
↓
double f(double d) {
        double r56104979 = 30.0;
        double r56104980 = d;
        double r56104981 = r56104979 * r56104980;
        return r56104981;
}

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

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

  3. Final simplification0

    \[\leadsto 30 \cdot d\]

Reproduce

herbie shell --seed 2019125 
(FPCore (d)
  :name "FastMath test1"

  :herbie-target
  (* d 30)

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