rust/tests/ui/floating_point_exp.rs
Krishna Sai Veera Reddy ff0d44e45a 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.
2020-02-23 22:36:15 -08:00

19 lines
439 B
Rust

// 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;
}