rustLogic errorEasy

Rust f64 comparison without epsilon delta tolerance

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What it should do

Check if 0.1 + 0.2 equals 0.3 within precision. Example: compare_float_addition(0.1, 0.2, 0.3) -> true

What happens instead

0.1 + 0.2 == 0.3 evaluates to false due to IEEE 754 precision error

fn compare_float_addition(a: f64, b: f64, expected: f64) -> bool {
    // Direct floating point equality fails
    (a + b) == expected
}

fn main() {
    println!("{}", compare_float_addition(0.1, 0.2, 0.3));
}

Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).

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This bug belongs to the logic errors pattern

The wrong operator, an inverted condition, a formula the right way round but backwards.

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fn compare_float_addition(a: f64, b: f64, expected: f64) -> bool { // Direct floating point equality fails (a + b) == expected } fn main() { println!("{}", compare_float_addition(0.1, 0.2, 0.3)); }

Rust f64 comparison without epsilon delta tolerance

What it should do

What happens instead

More logic errors to practise

Rust f64 comparison without epsilon delta tolerance

What it should do

What happens instead

More logic errors to practise