rust/tests/ui/floating_point_powi.fixed
Eric Wu 6bb6dd64d4 fix incorrect suggestion in suboptimal_flops
There was an error when trying to negate an expression
like `x - 1.0`. We used to format it as `-x - 1.0` whereas
a proper negation would be `-(x - 1.0)`.

Therefore, we add parentheses around the expression when it is a
Binary ExprKind.

We also add parentheses around multiply and divide expressions,
even though this is not strictly necessary.
2022-12-25 16:56:46 -05:00

34 lines
964 B
Rust

// run-rustfix
#![warn(clippy::suboptimal_flops)]
#![allow(clippy::unnecessary_cast)]
fn main() {
let one = 1;
let x = 3f32;
let y = 4f32;
let _ = x.mul_add(x, y);
let _ = x.mul_add(x, -y);
let _ = y.mul_add(y, x);
let _ = y.mul_add(-y, x);
let _ = (y as f32).mul_add(y as f32, x);
let _ = x.mul_add(x, y).sqrt();
let _ = y.mul_add(y, x).sqrt();
let _ = (x - 1.0).mul_add(x - 1.0, -y);
let _ = (x - 1.0).mul_add(x - 1.0, -y) + 3.0;
let _ = (x - 1.0).mul_add(x - 1.0, -(y + 3.0));
let _ = (y + 1.0).mul_add(-(y + 1.0), x);
let _ = (3.0 * y).mul_add(-(3.0 * y), x);
let _ = (y + 1.0 + x).mul_add(-(y + 1.0 + x), x);
let _ = (y + 1.0 + 2.0).mul_add(-(y + 1.0 + 2.0), x);
// Cases where the lint shouldn't be applied
let _ = x.powi(2);
let _ = x.powi(1 + 1);
let _ = x.powi(3);
let _ = x.powi(4) + y;
let _ = x.powi(one + 1);
let _ = (x.powi(2) + y.powi(2)).sqrt();
}