qfloat16: add QTextStream & QDebug streaming operators

Change-Id: Ieba79baf5ac34264a988fffd172655bdcaf12a59
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

src/corelib/global/qfloat16.cpp

@@ -398,6 +398,19 @@ QDataStream &operator>>(QDataStream &ds, qfloat16 &f)
 }
 #endif
 
+QTextStream &operator>>(QTextStream &ts, qfloat16 &f16)
+{
+    float f;
+    ts >> f;
+    f16 = qfloat16(f);
+    return ts;
+}
+
+QTextStream &operator<<(QTextStream &ts, qfloat16 f)
+{
+    return ts << float(f);
+}
+
 QT_END_NAMESPACE
 
 #include "qfloat16tables.cpp"

src/corelib/global/qfloat16.h

@@ -40,6 +40,7 @@ QT_BEGIN_NAMESPACE
 #ifndef QT_NO_DATASTREAM
 class QDataStream;
 #endif
+class QTextStream;
 
 class qfloat16
 {
@@ -223,6 +224,8 @@ QT_WARNING_POP
     friend Q_CORE_EXPORT QDataStream &operator<<(QDataStream &ds, qfloat16 f);
     friend Q_CORE_EXPORT QDataStream &operator>>(QDataStream &ds, qfloat16 &f);
 #endif
+    friend Q_CORE_EXPORT QTextStream &operator<<(QTextStream &ts, qfloat16 f);
+    friend Q_CORE_EXPORT QTextStream &operator>>(QTextStream &ts, qfloat16 &f);
 };
 
 Q_DECLARE_TYPEINFO(qfloat16, Q_PRIMITIVE_TYPE);

src/corelib/io/qdebug.h

@@ -108,6 +108,7 @@ public:
     inline QDebug &operator<<(unsigned long t) { stream->ts << t; return maybeSpace(); }
     inline QDebug &operator<<(qint64 t) { stream->ts << t; return maybeSpace(); }
     inline QDebug &operator<<(quint64 t) { stream->ts << t; return maybeSpace(); }
+    inline QDebug &operator<<(qfloat16 t) { stream->ts << t; return maybeSpace(); }
     inline QDebug &operator<<(float t) { stream->ts << t; return maybeSpace(); }
     inline QDebug &operator<<(double t) { stream->ts << t; return maybeSpace(); }
     inline QDebug &operator<<(const char* t) { stream->ts << QString::fromUtf8(t); return maybeSpace(); }

src/corelib/serialization/qtextstream.h

@@ -4,6 +4,7 @@
 #ifndef QTEXTSTREAM_H
 #define QTEXTSTREAM_H
 
+#include <QtCore/qfloat16.h>
 #include <QtCore/qiodevicebase.h>
 #include <QtCore/qchar.h>
 #include <QtCore/qscopedpointer.h>

tests/auto/corelib/global/qfloat16/tst_qfloat16.cpp

@@ -4,6 +4,7 @@
 
 #include <QTest>
 #include <QFloat16>
+#include <QTextStream>
 
 #include <math.h>
 
@@ -42,6 +43,7 @@ private slots:
     void limits();
     void mantissaOverflow();
     void dataStream();
+    void textStream();
 };
 
 void tst_qfloat16::fuzzyCompare_data()
@@ -656,5 +658,25 @@ void tst_qfloat16::dataStream()
     QCOMPARE(zero, qfloat16(0));
 }
 
+void tst_qfloat16::textStream()
+{
+    QString buffer;
+    {
+        QTextStream ts(&buffer);
+        ts << qfloat16(0) << Qt::endl << qfloat16(1.5);
+        QCOMPARE(ts.status(), QTextStream::Ok);
+    }
+    QCOMPARE(buffer, "0\n1.5");
+
+    {
+        QTextStream ts(&buffer);
+        qfloat16 zero = qfloat16(-2.5), threehalves = 1234;
+        ts >> zero >> threehalves;
+        QCOMPARE(ts.status(), QTextStream::Ok);
+        QCOMPARE(zero, qfloat16(0));
+        QCOMPARE(threehalves, 1.5);
+    }
+}
+
 QTEST_APPLESS_MAIN(tst_qfloat16)
 #include "tst_qfloat16.moc"