Average Error: 0.0 → 0.0
Time: 13.2s
Precision: 64
\[56789 \le a \le 98765 \land 0.0 \le b \le 1 \land 0.0 \le c \le 0.001677300000000000058247850986958837893326 \land 0.0 \le d \le 0.001677300000000000058247850986958837893326\]
\[a \cdot \left(\left(b + c\right) + d\right)\]
↓
\[d \cdot a + \left(b + c\right) \cdot a\]
a \cdot \left(\left(b + c\right) + d\right)
↓
d \cdot a + \left(b + c\right) \cdot a
double f(double a, double b, double c, double d) {
        double r6031930 = a;
        double r6031931 = b;
        double r6031932 = c;
        double r6031933 = r6031931 + r6031932;
        double r6031934 = d;
        double r6031935 = r6031933 + r6031934;
        double r6031936 = r6031930 * r6031935;
        return r6031936;
}
↓
double f(double a, double b, double c, double d) {
        double r6031937 = d;
        double r6031938 = a;
        double r6031939 = r6031937 * r6031938;
        double r6031940 = b;
        double r6031941 = c;
        double r6031942 = r6031940 + r6031941;
        double r6031943 = r6031942 * r6031938;
        double r6031944 = r6031939 + r6031943;
        return r6031944;
}

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-lft-in0.0

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

  4. Final simplification0.0

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

Reproduce

herbie shell --seed 2019174 
(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)))