diff options
author | Ivan Komissarov <ABBAPOH@gmail.com> | 2018-10-22 19:08:57 +0200 |
---|---|---|
committer | Ivan Komissarov <ABBAPOH@gmail.com> | 2018-10-28 22:26:56 +0000 |
commit | 95476bfcf64aa9cb43775ebfe3410ce9565de4d5 (patch) | |
tree | 28c41b199e3ac8df4bfd542ed2e39c3c8b5a2da7 /tests | |
parent | 269172037db11d6e62bcef2d5c7491af9244f203 (diff) |
qendian: Fix float conversions
Since Qt 5.10, qTo/FromBig/LittleEndian<float/double> stopped working.
It may be confusing, but big endian floats do exist, so not to break old
code, we should support them.
Change-Id: I21cdbc7f48ec030ce3d82f1cd1aad212f0fe5dd0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'tests')
-rw-r--r-- | tests/auto/corelib/global/qtendian/tst_qtendian.cpp | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/tests/auto/corelib/global/qtendian/tst_qtendian.cpp b/tests/auto/corelib/global/qtendian/tst_qtendian.cpp index 7043969c2f..2345bb39c1 100644 --- a/tests/auto/corelib/global/qtendian/tst_qtendian.cpp +++ b/tests/auto/corelib/global/qtendian/tst_qtendian.cpp @@ -64,6 +64,9 @@ struct TestData quint16 data16; quint8 data8; + float dataFloat; + double dataDouble; + quint8 reserved; }; @@ -72,6 +75,7 @@ template <> quint8 getData(const TestData &d) { return d.data8; } template <> quint16 getData(const TestData &d) { return d.data16; } template <> quint32 getData(const TestData &d) { return d.data32; } template <> quint64 getData(const TestData &d) { return d.data64; } +template <> float getData(const TestData &d) { return d.dataFloat; } union RawTestData { @@ -79,9 +83,39 @@ union RawTestData TestData data; }; -static const TestData inNativeEndian = { Q_UINT64_C(0x0123456789abcdef), 0x00c0ffee, 0xcafe, 0xcf, '\0' }; -static const RawTestData inBigEndian = { "\x01\x23\x45\x67\x89\xab\xcd\xef" "\x00\xc0\xff\xee" "\xca\xfe" "\xcf" }; -static const RawTestData inLittleEndian = { "\xef\xcd\xab\x89\x67\x45\x23\x01" "\xee\xff\xc0\x00" "\xfe\xca" "\xcf" }; +template <typename Float> +Float int2Float(typename QIntegerForSizeof<Float>::Unsigned i) +{ + Float result = 0; + memcpy(reinterpret_cast<char *>(&result), reinterpret_cast<const char *>(&i), sizeof (Float)); + return result; +} + +static const TestData inNativeEndian = { + Q_UINT64_C(0x0123456789abcdef), + 0x00c0ffee, + 0xcafe, + 0xcf, + int2Float<float>(0x00c0ffeeU), + int2Float<double>(Q_UINT64_C(0x0123456789abcdef)), + '\0' +}; +static const RawTestData inBigEndian = { + "\x01\x23\x45\x67\x89\xab\xcd\xef" + "\x00\xc0\xff\xee" + "\xca\xfe" + "\xcf" + "\x00\xc0\xff\xee" + "\x01\x23\x45\x67\x89\xab\xcd\xef" +}; +static const RawTestData inLittleEndian = { + "\xef\xcd\xab\x89\x67\x45\x23\x01" + "\xee\xff\xc0\x00" + "\xfe\xca" + "\xcf" + "\xee\xff\xc0\x00" + "\xef\xcd\xab\x89\x67\x45\x23\x01" +}; #define EXPAND_ENDIAN_TEST(endian) \ do { \ |