path: root/src/corelib/global/qfloat16.cpp
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authorGiuseppe D'Angelo <>2017-04-20 22:30:56 +0200
committerGiuseppe D'Angelo <>2017-04-21 11:01:58 +0000
commit759af3e5ad1520937955985bbcfee26f5a400e0f (patch)
tree76de6b32982e9197e30564711289feda656b3f0e /src/corelib/global/qfloat16.cpp
parent07942adb77f60738a6043665673d51fc7991233b (diff)
Centralize the check that the floating point implementation follows IEEE754
C++ does not specify which kind of floating point implementation is being used. The C Standard doesn't either, but it includes a normative reference for implementations adoping it (ISO/IEC 9899:2011 Annex F). There are a few existing checks in qfloat16.cpp; move them to qglobal.cpp (next to the other, similar checks), and improve them by actually checking that the radix used for floating point numbers is 2. Change-Id: I704a3a8efeb51014b3be23fb236654d647a6f44f Reviewed-by: Lars Knoll <>
Diffstat (limited to 'src/corelib/global/qfloat16.cpp')
1 files changed, 0 insertions, 18 deletions
diff --git a/src/corelib/global/qfloat16.cpp b/src/corelib/global/qfloat16.cpp
index 1de1ae65fb..314a0addd1 100644
--- a/src/corelib/global/qfloat16.cpp
+++ b/src/corelib/global/qfloat16.cpp
@@ -59,24 +59,6 @@ QT_BEGIN_NAMESPACE
\since 5.9
-Q_STATIC_ASSERT_X(sizeof(float) == sizeof(quint32),
- "qfloat16 assumes that floats are 32 bits wide");
-// There are a few corner cases regarding denormals where GHS compiler is relying
-// hardware behavior that is not IEC 559 compliant. Therefore the compiler
-// reports std::numeric_limits<float>::is_iec559 as false. This is all right
-// according to our needs.
-#if !defined(Q_CC_GHS)
- "Only works with IEEE 754 floating point");
-Q_STATIC_ASSERT_X(std::numeric_limits<float>::has_infinity &&
- std::numeric_limits<float>::has_quiet_NaN &&
- std::numeric_limits<float>::has_signaling_NaN,
- "Only works with IEEE 754 floating point");
Returns true if the \c qfloat16 \a {f} is equivalent to infinity.
\relates <QFloat16>