QLineF::angle() documentation is wrong

The documentation for QLineF::angle() claims:

"Positive values for the angles mean counter-clockwise while negative values mean the clockwise direction. Zero degrees is at the 3 o'clock position."

This is not true. The return value is normalized to [0,360], see http://qt.gitorious.org/qt/qt/blobs/v4.7.3/src/corelib/tools/qline.cpp#line579