bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

implement 0.0/0.0 -> NaN lint as described in #370

Browse source 
casing of NaN
This commit is contained in:
swgillespie 2015-10-11 19:22:13 -07:00
parent 0bb4cbe859
commit b02e80c012
4 changed files with 71 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

16
tests/compile-fail/zero_div_zero.rs Normal file
View file

@ -0,0 +1,16 @@
#![feature(plugin)]
#![plugin(clippy)]
#[allow(unused_variables)]
#[deny(zero_divided_by_zero)]
fn main() {
let nan = 0.0 / 0.0; //~ERROR constant division of 0.0 with 0.0 will always result in NaN
let f64_nan = 0.0 / 0.0f64; //~ERROR constant division of 0.0 with 0.0 will always result in NaN
let other_f64_nan = 0.0f64 / 0.0; //~ERROR constant division of 0.0 with 0.0 will always result in NaN
let one_more_f64_nan = 0.0f64/0.0f64; //~ERROR constant division of 0.0 with 0.0 will always result in NaN
let zero = 0.0;
let other_zero = 0.0;
let other_nan = zero / other_zero; // fine - this lint doesn't propegate constants.
let not_nan = 2.0/0.0; // not an error: 2/0 = inf
let also_not_nan = 0.0/2.0; // not an error: 0/2 = 0
}