Average Error: 0.0 → 0.0
Time: 10.4s
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 r4772954 = a;
        double r4772955 = b;
        double r4772956 = c;
        double r4772957 = r4772955 + r4772956;
        double r4772958 = d;
        double r4772959 = r4772957 + r4772958;
        double r4772960 = r4772954 * r4772959;
        return r4772960;
}
↓
double f(double a, double b, double c, double d) {
        double r4772961 = a;
        double r4772962 = d;
        double r4772963 = r4772961 * r4772962;
        double r4772964 = c;
        double r4772965 = b;
        double r4772966 = r4772964 + r4772965;
        double r4772967 = r4772966 * r4772961;
        double r4772968 = r4772963 + r4772967;
        return r4772968;
}

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)))