Average Error: 0.0 → 0.0
Time: 34.0s
Precision: 64
\[56789 \le a \le 98765 \land 0 \le b \le 1 \land 0 \le c \le 0.0016773 \land 0 \le d \le 0.0016773\]
\[a \cdot \left(\left(b + c\right) + d\right)\]
↓
\[d \cdot a + \left(b + c\right) \cdot a\]
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 r42238766 = a;
        double r42238767 = b;
        double r42238768 = c;
        double r42238769 = r42238767 + r42238768;
        double r42238770 = d;
        double r42238771 = r42238769 + r42238770;
        double r42238772 = r42238766 * r42238771;
        return r42238772;
}
↓
double f(double a, double b, double c, double d) {
        double r42238773 = d;
        double r42238774 = a;
        double r42238775 = r42238773 * r42238774;
        double r42238776 = b;
        double r42238777 = c;
        double r42238778 = r42238776 + r42238777;
        double r42238779 = r42238778 * r42238774;
        double r42238780 = r42238775 + r42238779;
        return r42238780;
}

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 2019125 
(FPCore (a b c d)
  :name "Expression, p14"
  :pre (and (<= 56789 a 98765) (<= 0 b 1) (<= 0 c 0.0016773) (<= 0 d 0.0016773))

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

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