Divide before Multiply

A detector that identifies and corrects instances of division before multiplication to ensure accurate mathematical operations.

Why is it bad?

Performing division before multiplication can lead to unexpected results due to precision loss and rounding errors:

• Precision Loss: Dividing first can result in significant precision loss, especially when dealing with integers or fixed-point numbers.
• Rounding Errors: Early division might cause rounding errors that propagate through subsequent calculations.
• Unexpected Behavior: Incorrectly ordered operations can lead to incorrect outcomes, making debugging and maintenance more challenging.

Example

let a: Int = 10;
let b: Int = 3;
let c: Int = 2;
// Bad: Division before multiplication
let result: Int = a / b * c;

Use instead:

let a: Int = 10;
let b: Int = 3;
let c: Int = 2;
// Correct: Multiplication before division
let result: Int = a * c / b;