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49 // This file is not part of the Qt API. It exists purely as an
50 // implementation detail. This header file may change from version to
51 // version without notice, or even be removed.
61 static const qreal Q_PI = qreal(3.14159265358979323846); // pi
62 static const qreal Q_2PI = qreal(6.28318530717958647693); // 2*pi
63 static const qreal Q_PI2 = qreal(1.57079632679489661923); // pi/2
65 inline int qIntSqrtInt(int v)
67 return static_cast<int>(qSqrt(static_cast<qreal>(v)));