From 0dd13b0db2f120577e31bec5c61190eb16d692a3 Mon Sep 17 00:00:00 2001
From: Taylor Cramer <cramertaylorj@gmail.com>
Date: Wed, 13 Jul 2016 00:59:35 -0700
Subject: [PATCH] Change floating point constant to mem::transmute u64
 comparison

---
 clippy_lints/src/consts.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/clippy_lints/src/consts.rs b/clippy_lints/src/consts.rs
index d4ee7659056..9ed37e70a01 100644
--- a/clippy_lints/src/consts.rs
+++ b/clippy_lints/src/consts.rs
@@ -92,8 +92,10 @@ fn eq(&self, other: &Constant) -> bool {
                 // we want `Fw32 == FwAny` and `FwAny == Fw64`, by transitivity we must have
                 // `Fw32 == Fw64` so don’t compare them
                 match (ls.parse::<f64>(), rs.parse::<f64>()) {
-                    (Ok(l), Ok(r)) => l.eq(&r) &&
-                        (l.is_sign_positive() == r.is_sign_positive()), // needed for 0.0 != -0.0
+                    // mem::transmute is required to catch non-matching 0.0, -0.0, and NaNs
+                    (Ok(l), Ok(r)) => unsafe {
+                        mem::transmute::<f64, u64>(l) == mem::transmute::<f64, u64>(r)
+                    },
                     _ => false,
                 }
             }
-- 
2.44.0