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qfloat16: NaN is not infinite 

Change-Id: I39332e0a867442d58082fffd1502b7010424f0f8
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
bb10
Thiago Macieira 2017-12-22 18:13:46 -02:00
parent 44ef95a885
commit 3d7cdb64fc
2 changed files with 4 additions and 2 deletions
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4
src/corelib/global/qfloat16_p.h
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@ -61,9 +61,9 @@ static inline bool qt_is_inf(qfloat16 d) Q_DECL_NOTHROW
bool is_inf;
uchar *ch = (uchar *)&d;
if (QSysInfo::ByteOrder == QSysInfo::BigEndian)
is_inf = (ch[0] & 0x7c) == 0x7c;
is_inf = (ch[0] & 0x7c) == 0x7c && (ch[0] & 0x02) == 0;
else
is_inf = (ch[1] & 0x7c) == 0x7c;
is_inf = (ch[1] & 0x7c) == 0x7c && (ch[1] & 0x02) == 0;
return is_inf;
}

2
tests/auto/corelib/global/qfloat16/tst_qfloat16.cpp
View File

@ -158,12 +158,14 @@ void tst_qfloat16::qNan()
qfloat16 nan = qQNaN();
QVERIFY(!(0. > nan));
QVERIFY(!(0. < nan));
QVERIFY(!qIsInf(nan));
QVERIFY(qIsNaN(nan));
QVERIFY(qIsNaN(nan + 1.f));
QVERIFY(qIsNaN(-nan));
qfloat16 inf = qInf();
QVERIFY(inf > qfloat16(0));
QVERIFY(-inf < qfloat16(0));
QVERIFY(!qIsNaN(inf));
QVERIFY(qIsInf(inf));
QVERIFY(qIsInf(-inf));
QVERIFY(qIsInf(2.f*inf));