return pow(x, y);
}
+#ifndef M_E
+#define M_E (2.7182818284590452354)
+#endif
+
+#ifndef M_LOG2E
+#define M_LOG2E (1.4426950408889634074)
+#endif
+
+#ifndef M_LOG10E
+#define M_LOG10E (0.43429448190325182765)
+#endif
+
+#ifndef M_LN2
+#define M_LN2 (0.69314718055994530942)
+#endif
+
+#ifndef M_LN10
+#define M_LN10 (2.30258509299404568402)
+#endif
+
#ifndef M_PI
#define M_PI (3.14159265358979323846)
#endif
+#ifndef M_PI_2
+#define M_PI_2 (1.57079632679489661923)
+#endif
+
+#ifndef M_PI_4
+#define M_PI_4 (0.78539816339744830962)
+#endif
+
+#ifndef M_1_PI
+#define M_1_PI (0.31830988618379067154)
+#endif
+
+#ifndef M_2_PI
+#define M_2_PI (0.63661977236758134308)
+#endif
+
+#ifndef M_2_SQRTPI
+#define M_2_SQRTPI (1.12837916709551257390)
+#endif
+
+#ifndef M_SQRT2
+#define M_SQRT2 (1.41421356237309504880)
+#endif
+
+#ifndef M_SQRT1_2
+#define M_SQRT1_2 (0.70710678118654752440)
+#endif
+
inline qreal qFastSin(qreal x)
{
int si = int(x * (0.5 * QT_SINE_TABLE_SIZE / M_PI)); // Would be more accurate with qRound, but slower.