Average Error: 0.0 → 0.0
Time: 15.2s
Precision: 64
\[56789 \le a \le 98765 \land 0.0 \le b \le 1 \land 0.0 \le c \le 0.001677300000000000058247850986958837893326 \land 0.0 \le d \le 0.001677300000000000058247850986958837893326\]
\[a \cdot \left(\left(b + c\right) + d\right)\]
↓
\[a \cdot d + \left(c + b\right) \cdot a\]
a \cdot \left(\left(b + c\right) + d\right)
↓
a \cdot d + \left(c + b\right) \cdot a
double f(double a, double b, double c, double d) {
        double r5382808 = a;
        double r5382809 = b;
        double r5382810 = c;
        double r5382811 = r5382809 + r5382810;
        double r5382812 = d;
        double r5382813 = r5382811 + r5382812;
        double r5382814 = r5382808 * r5382813;
        return r5382814;
}
↓
double f(double a, double b, double c, double d) {
        double r5382815 = a;
        double r5382816 = d;
        double r5382817 = r5382815 * r5382816;
        double r5382818 = c;
        double r5382819 = b;
        double r5382820 = r5382818 + r5382819;
        double r5382821 = r5382820 * r5382815;
        double r5382822 = r5382817 + r5382821;
        return r5382822;
}

Error

Bits error versus a

Bits error versus b

Bits error versus c

Bits error versus d

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.0
Target0.0
Herbie0.0
\[a \cdot b + a \cdot \left(c + d\right)\]

Derivation

  1. Initial program 0.0

    \[a \cdot \left(\left(b + c\right) + d\right)\]
  2. Using strategy rm

  3. Applied distribute-rgt-in0.0

    \[\leadsto \color{blue}{\left(b + c\right) \cdot a + d \cdot a}\]

  4. Final simplification0.0

    \[\leadsto a \cdot d + \left(c + b\right) \cdot a\]

Reproduce

herbie shell --seed 2019172 
(FPCore (a b c d)
  :name "Expression, p14"
  :pre (and (<= 56789.0 a 98765.0) (<= 0.0 b 1.0) (<= 0.0 c 0.0016773) (<= 0.0 d 0.0016773))

  :herbie-target
  (+ (* a b) (* a (+ c d)))

  (* a (+ (+ b c) d)))