This simple program compiles without any issue and equality assertion is evaluated as true.
fn main() {
let celsius_temp: f64 = 23.0;
let fahrenheit_temp: f64 = celsius_to_fahrenheit(celsius_temp);
assert_eq!(fahrenheit_temp, 73.4);
println!("Test passed!");
}
fn celsius_to_fahrenheit(celsius_temp: f64) -> f64 {
(celsius_temp * 1.8) + 32.0
}
However, if I use instead of f64 a data type of f32, Rust compiler panics and assertion is false. It gives me a following message: thread 'main' panicked at 'assertion failed: (left == right)
left: 73.399994,
right: 73.4'
Why does it work with f64 and not with f32? I am not using here large numbers.
