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IQmpy的问题



Vb = _IQmpy(_IQ(-0.5),v->Ubeta) + _IQmpy(_IQ(0.8660254),v->Ualpha);  // 0.8660254 = sqrt(3)/2
    Vc = _IQmpy(_IQ(-0.5),v->Ubeta) - _IQmpy(_IQ(0.8660254),v->Ualpha);

请问高手,IQmpy是什么意思?实现什么运算。

如果不用IQ,上面两个式子应该怎么写?

谢谢!