How to return a uint64_t from a mex function?

I want to assign to plhs[0] a scalar of type uint64_t.

Not sure what function to call.

e.g. if I have

uint64_t y=123;

and I want to return y to Matlab

I tried

plhs[0] = mxCreateDoubleScalar(y);

But this is not the right call as it is not a double. How to create a uint64_t variable in the mex function? in there another mxCreate...

Answer 1

[Bruno Luong]

https://www.mathworks.com/help/matlab/apiref/mxcreatenumericmatrix.html

mxArray *A;
A = mxCreateNumericMatrix(1, 1, mxUINT64_CLASS, mxREAL);
*(mxGetUint64s(A)) = 123;

[Shlomo Geva]

Yep, thanks!!