From d448f2ecb8bca7de1e69f9f6f10d0ffb8c3d1beb Mon Sep 17 00:00:00 2001
From: Edward Welbourne <edward.welbourne@qt.io>
Date: Mon, 23 Sep 2019 16:46:07 +0200
Subject: Correct handling of -qfloat16(0)

It is finite and normal; it classifies as a zero; and it should not be > qfloat16(0).
Added tests to match.

Change-Id: I7874fb54f622b4cdf28b0894050ad3e75cf5d77c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/corelib/global/qfloat16.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/corelib/global/qfloat16.cpp')

diff --git a/src/corelib/global/qfloat16.cpp b/src/corelib/global/qfloat16.cpp
index 2ba4c79374..6c21b7de5a 100644
--- a/src/corelib/global/qfloat16.cpp
+++ b/src/corelib/global/qfloat16.cpp
@@ -155,7 +155,7 @@ QT_BEGIN_NAMESPACE
 int qfloat16::fpClassify() const noexcept
 {
     return isInf() ? FP_INFINITE : isNaN() ? FP_NAN
-        : !b16 ? FP_ZERO : isNormal() ? FP_NORMAL : FP_SUBNORMAL;
+        : !(b16 & 0x7fff) ? FP_ZERO : isNormal() ? FP_NORMAL : FP_SUBNORMAL;
 }
 
 /*! \fn int qRound(qfloat16 value)
-- 
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