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DSP乘法运算

Other Parts Discussed in Thread: TMS320F2809

您好,我用TMS320F2809进行乘法运算,定义如下:

unsigned long result;

unsigned int submul1;

unsigned int submul2;

result=(unsigned long)(submul1*submul2);

当结果大于65536的时候,出现高16无结果的现象;如1785*37=66045,得到的result结果为509。请问,我应该怎么样写,才能保存真正的结果呢?谢谢!!!