Implement C=Oper(A,B). \nSpecially, when "Oper" stands for multiplication, C=AB, where: \nC is a m*k matrix, m corresponds to dimension 2 while k corrsponds to dimension 1. \nA is a m*n matrix, m corresponds to dimension 2 while n corrsponds to dimension 1. \nB is a n*k matrix, n corresponds to dimension 2 while k corrsponds to dimension 1. \nLike matlab matrix operation.\n
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\n Parameters
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\n file mat=
\tauxiliary input file name \n
\n \n\n
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\n string type=
\t[mul, add, sub, dotmul] operation type, the default is mul \n