rust/tests/compile-fail/float_cmp.rs

#![feature(plugin)]
#![plugin(clippy)]

use std::ops::Add;

const ZERO : f32 = 0.0;
const ONE : f32 = ZERO + 1.0;

fn twice<T>(x : T) -> T where T : Add<T, Output = T>, T : Copy {
	x + x
}

#[deny(float_cmp)]
#[allow(unused)]
fn main() {
	ZERO == 0f32; //~ERROR
	ZERO == 0.0; //~ERROR
	ZERO + ZERO != 1.0; //~ERROR
	
	ONE != 0.0; //~ERROR
	twice(ONE) != ONE; //~ERROR
	ONE as f64 != 0.0; //~ERROR
	
	let x : f64 = 1.0;
	
	x == 1.0; //~ERROR
	x != 0f64; //~ERROR
	
	twice(x) != twice(ONE as f64); //~ERROR
	
	x < 0.0;
	x > 0.0;
	x <= 0.0;
	x >= 0.0;	
}