[問題] 使用mex回傳array到matlab
我想要用mex做陣列相加再回傳到matlab
程式如下
%%%這是matlab code
mex add.c;
b = {1.1,1.1}; c = {2.2,2.2};
a = add(b, c);
//這是 add.mex
#include "mex.h"
void mexFunction(int nlhs,mxArray *plhs[], int nrhs,const mxArray *prhs[])
{
double *a, *b, *c;
int i;
plhs[0] = mxCreateDoubleMatrix(1, 2, mxREAL);
a = mxGetPr(plhs[0]);
b = mxGetPr(prhs[0]);
c = mxGetPr(prhs[1]);
for(i=0;i<2;i++){
a[i]=b[i]+b[i];
}
}
以上我先把陣列大小寫死，但是我沒有得到正確的a值a={3.3,3.3}，而是得到
a={1.669273906000000e-315,1.669273906000000e-315}，請問我錯在哪裡
感謝
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