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| author | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2018-05-30 12:23:29 +0200 |
|---|---|---|
| committer | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2018-05-30 16:12:03 +0000 |
| commit | ccfb309b908339d45339f7db084bc6f653757de9 (patch) | |
| tree | 15c956ceccfeef6567846002ef6b39a78f2a887e /src | |
| parent | 04ebb981ab911fe527deb5b247fdc9392d9be535 (diff) | |
Document qRound's rounding semantics
This differs from both C rounding (away from zero), and IEEE-754
rounding (to even).
Change-Id: I2cdd358824ca14c922b23029308e3ce3258c1d8f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/corelib/global/qglobal.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/corelib/global/qglobal.cpp b/src/corelib/global/qglobal.cpp index 2ca627e851..2fbd31b3d7 100644 --- a/src/corelib/global/qglobal.cpp +++ b/src/corelib/global/qglobal.cpp @@ -939,6 +939,8 @@ Q_STATIC_ASSERT((std::is_same<qsizetype, qptrdiff>::value)); Rounds \a d to the nearest integer. + Rounds half up (e.g. 0.5 -> 1, -0.5 -> 0). + Example: \snippet code/src_corelib_global_qglobal.cpp 11A @@ -949,6 +951,8 @@ Q_STATIC_ASSERT((std::is_same<qsizetype, qptrdiff>::value)); Rounds \a d to the nearest integer. + Rounds half up (e.g. 0.5f -> 1, -0.5f -> 0). + Example: \snippet code/src_corelib_global_qglobal.cpp 11B @@ -959,6 +963,8 @@ Q_STATIC_ASSERT((std::is_same<qsizetype, qptrdiff>::value)); Rounds \a d to the nearest 64-bit integer. + Rounds half up (e.g. 0.5 -> 1, -0.5 -> 0). + Example: \snippet code/src_corelib_global_qglobal.cpp 12A @@ -969,6 +975,8 @@ Q_STATIC_ASSERT((std::is_same<qsizetype, qptrdiff>::value)); Rounds \a d to the nearest 64-bit integer. + Rounds half up (e.g. 0.5f -> 1, -0.5f -> 0). + Example: \snippet code/src_corelib_global_qglobal.cpp 12B |