| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | Add qHypot() to qmath.h, exposing and extending std::hypot() | Edward Welbourne | 2021-01-27 | 1 | -13/+5 |
| | | | | | | | | | | | | | | | | | | | | | We have plenty of places where we add some squares and take a square root; this may be done more accurately and faster by hypot(). Introduce QHypotHelper to handle hypot with more than 3 parameters, and with 3 when the C++17 version is missing (which it never should be). Include an overload taking arbitrarily many valus and ensure that we can use qHypot() with qfloat16. Illustrate with some example uses, add some tests. [ChangeLog][QtCore][QMath] Header <QMath> now provides qHypot(), an implementation of std::hypot() taking arbitrarily many numeric values, including support for qfloat16, while avoiding the overflow and underflow problems that arise when naively taking the square root of a sum of squares. Change-Id: Ia4e3913fe83fc27d17d8e7f1a52f03ad445c1fed Reviewed-by: Andrei Golubev <andrei.golubev@qt.io> Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io> | ||||
| * | Move QTriangulator and QTriangulatingStroker classes to painting | Andy Nichols | 2016-08-15 | 1 | -0/+171 |
| Previously the private APIs for QTriangulator and QTriangulatingStroker were located in src/gui/opengl because they were used by the OpenGL paint engine. These API's are not actually specific to OpenGL however, and were not being built when QT_NO_OPENGL was defined. It makes more sense for these classes to belong in the painting subgroup. Aside from the OpenGL paint engine, these private APIs are used by QtLocation to triangulate polylines to be rendered by QtQuick. Change-Id: Idb4d1e5b2a51394d4c6bcdf9ab1ece99de23d4de Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io> | |||||
 |
index : qt/qtbase.git | |
| Qt Base (Core, Gui, Widgets, Network, ...) |
| summaryrefslogtreecommitdiffstats |