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rust-clippy/tests/ui/float_arithmetic.rs

70 lines
1.7 KiB
Rust

#![warn(clippy::arithmetic_side_effects, clippy::float_arithmetic)]
#![allow(
unused,
clippy::shadow_reuse,
clippy::shadow_unrelated,
clippy::no_effect,
clippy::unnecessary_operation,
clippy::op_ref
)]
#[rustfmt::skip]
fn main() {
let mut f = 1.0f32;
f * 2.0;
//~^ ERROR: floating-point arithmetic detected
//~| NOTE: `-D clippy::float-arithmetic` implied by `-D warnings`
1.0 + f;
//~^ ERROR: floating-point arithmetic detected
f * 2.0;
//~^ ERROR: floating-point arithmetic detected
f / 2.0;
//~^ ERROR: floating-point arithmetic detected
f - 2.0 * 4.2;
//~^ ERROR: floating-point arithmetic detected
-f;
//~^ ERROR: floating-point arithmetic detected
f += 1.0;
//~^ ERROR: floating-point arithmetic detected
f -= 1.0;
//~^ ERROR: floating-point arithmetic detected
f *= 2.0;
//~^ ERROR: floating-point arithmetic detected
f /= 2.0;
//~^ ERROR: floating-point arithmetic detected
}
// also warn about floating point arith with references involved
pub fn float_arith_ref() {
3.1_f32 + &1.2_f32;
//~^ ERROR: floating-point arithmetic detected
&3.4_f32 + 1.5_f32;
//~^ ERROR: floating-point arithmetic detected
&3.5_f32 + &1.3_f32;
//~^ ERROR: floating-point arithmetic detected
}
pub fn float_foo(f: &f32) -> f32 {
let a = 5.1;
a + f
//~^ ERROR: floating-point arithmetic detected
}
pub fn float_bar(f1: &f32, f2: &f32) -> f32 {
f1 + f2
//~^ ERROR: floating-point arithmetic detected
}
pub fn float_baz(f1: f32, f2: &f32) -> f32 {
f1 + f2
//~^ ERROR: floating-point arithmetic detected
}
pub fn float_qux(f1: f32, f2: f32) -> f32 {
(&f1 + &f2)
//~^ ERROR: floating-point arithmetic detected
}