rust-clippy/tests/ui/floating_point_exp.rs

// run-rustfix
#![warn(clippy::imprecise_flops)]

fn main() {
    let x = 2f32;
    let _ = x.exp() - 1.0;
    let _ = x.exp() - 1.0 + 2.0;
    // Cases where the lint shouldn't be applied
    let _ = x.exp() - 2.0;
    let _ = x.exp() - 1.0 * 2.0;

    let x = 2f64;
    let _ = x.exp() - 1.0;
    let _ = x.exp() - 1.0 + 2.0;
    // Cases where the lint shouldn't be applied
    let _ = x.exp() - 2.0;
    let _ = x.exp() - 1.0 * 2.0;
}
Run rust-fix on tests 2020-02-23 04:32:13 +00:00			`// run-rustfix`
Add `imprecise_flops` lint Add lint to detect floating point operations that can be computed more accurately at the cost of performance. `cbrt`, `ln_1p` and `exp_m1` library functions call their equivalent cmath implementations which is slower but more accurate so moving checks for these under this new lint. 2020-02-24 05:06:55 +00:00			`#![warn(clippy::imprecise_flops)]`
Split test cases into separate files 2019-12-21 01:57:47 +00:00
			`fn main() {`
			`let x = 2f32;`
			`let _ = x.exp() - 1.0;`
			`let _ = x.exp() - 1.0 + 2.0;`
			`// Cases where the lint shouldn't be applied`
			`let _ = x.exp() - 2.0;`
			`let _ = x.exp() - 1.0 * 2.0;`

			`let x = 2f64;`
			`let _ = x.exp() - 1.0;`
			`let _ = x.exp() - 1.0 + 2.0;`
			`// Cases where the lint shouldn't be applied`
			`let _ = x.exp() - 2.0;`
			`let _ = x.exp() - 1.0 * 2.0;`
			`}`