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请问如何理解Q格式乘法的溢出问题

请问如何理解Q格式乘法的溢出问题,比如:     intt16 A,B,C.。 A=22  ,B=IQ10(3)      C= _IQ10mpy(A,B)。此时会溢出吗。因为IQ10(3) = 3072   ,3072X22 = 67584。超过65535了。或者 说只要转Q格式前不溢出,Q格式相乘就不会溢出?我仿真了,不会饱和,但我想知道原因,谢谢了!!