From 82a42b90a2c84d65756201021dd1e1587adc8282 Mon Sep 17 00:00:00 2001
From: Simon Byrne <simonbyrne@gmail.com>
Date: Thu, 13 Jun 2019 10:06:17 -0700
Subject: [PATCH] Fix FMA_NATIVE constant

As pointed out be @StefanKarpinski in https://github.com/JuliaLang/julia/pull/31922#issuecomment-501791271
---
 base/special/log.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/base/special/log.jl b/base/special/log.jl
index c9aafd3d08224..ef578edb56795 100644
--- a/base/special/log.jl
+++ b/base/special/log.jl
@@ -141,7 +141,7 @@ const t_log_Float32 = (0.0,0.007782140442054949,0.015504186535965254,0.023167059
 
 # determine if hardware FMA is available
 # should probably check with LLVM, see #9855.
-const FMA_NATIVE = muladd(nextfloat(1.0),nextfloat(1.0),-nextfloat(1.0,2)) == -4.930380657631324e-32
+const FMA_NATIVE = muladd(nextfloat(1.0),nextfloat(1.0),-nextfloat(1.0,2)) != 0
 
 # truncate lower order bits (up to 26)
 # ideally, this should be able to use ANDPD instructions, see #9868.