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| author | Glen Mabey <Glen.Mabey@swri.org> | 2015-02-07 21:11:22 -0600 |
|---|---|---|
| committer | Glen Mabey <Glen.Mabey@swri.org> | 2015-03-28 00:05:50 +0000 |
| commit | 046f3254838715079b853ab4e15eed4ef464fb30 (patch) | |
| tree | 9e06ab8e1638b415acbd476463bcea2c39ddc851 /src/corelib/tools/qalgorithms.qdoc | |
| parent | 5e9f7b9579f654d3b7b9c7a8a05949f2b780c75d (diff) | |
Adds qFindFirstSetBit() and qFindLastSetBit().
Two new function families have been added: qFindFirstSetBit() and
qFindLastSetBit() for a variety of integer sizes. Fast implementations
are included for most platforms.
[ChangeLog][QtCore][QtAlgorithms] Added qFindFirstSetBit() and
qFindLastSetBit().
Change-Id: I89d9d1637ea26070aee5a60be95be1b51bfc84dc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/tools/qalgorithms.qdoc')
| -rwxr-xr-x[-rw-r--r--] | src/corelib/tools/qalgorithms.qdoc | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/corelib/tools/qalgorithms.qdoc b/src/corelib/tools/qalgorithms.qdoc index 193042e017..dac353fa70 100644..100755 --- a/src/corelib/tools/qalgorithms.qdoc +++ b/src/corelib/tools/qalgorithms.qdoc @@ -785,3 +785,73 @@ \since 5.2 \overload */ + +/*! + \fn uint qCountTrailingZeroBits(quint8 v) + \relates <QtAlgorithms> + \since 5.6 + + Returns the number of consecutive zero bits in \a v, when searching from the LSB. + For example, qCountTrailingZeroBits(1) returns 0 and qCountTrailingZeroBits(8) returns 3. + */ + +/*! + \fn uint qCountTrailingZeroBits(quint16 v) + \relates <QtAlgorithms> + \since 5.6 + \overload + */ + +/*! + \fn uint qCountTrailingZeroBits(quint32 v) + \relates <QtAlgorithms> + \since 5.6 + \overload + */ + +/*! + \fn uint qCountTrailingZeroBits(quint64 v) + \relates <QtAlgorithms> + \since 5.6 + \overload + */ + +/*! + \fn uint qCountLeadingZeroBits(quint8 v) + \relates <QtAlgorithms> + \since 5.6 + + Returns the number of consecutive zero bits in \a v, when searching from the MSB. + For example, qCountLeadingZeroBits(quint8(1)) returns 7 and + qCountLeadingZeroBits(quint8(8)) returns 4. + */ + +/*! + \fn uint qCountLeadingZeroBits(quint16 v) + \relates <QtAlgorithms> + \since 5.6 + + Returns the number of consecutive zero bits in \a v, when searching from the MSB. + For example, qCountLeadingZeroBits(quint16(1)) returns 15 and + qCountLeadingZeroBits(quint16(8)) returns 12. + */ + +/*! + \fn uint qCountLeadingZeroBits(quint32 v) + \relates <QtAlgorithms> + \since 5.6 + + Returns the number of consecutive zero bits in \a v, when searching from the MSB. + For example, qCountLeadingZeroBits(quint32(1)) returns 31 and + qCountLeadingZeroBits(quint32(8)) returns 28. + */ + +/*! + \fn uint qCountLeadingZeroBits(quint64 v) + \relates <QtAlgorithms> + \since 5.6 + + Returns the number of consecutive zero bits in \a v, when searching from the MSB. + For example, qCountLeadingZeroBits(quint64(1)) returns 63 and + qCountLeadingZeroBits(quint64(8)) returns 60. + */ |