Can I specify the output type when using calllib? My problem is MATLAB is automatically converting my output to a double even though I need an int64 and am losing needed precision.
Example
I have the following function defined in my_header.h
__int64 my_function(int arg1);
I can call the function like this:
loadlibrary('my_library', 'my_header.h')
output = calllib('my_library', 'my_function', arg1)
But then output is a double and I am losing needed precision.
What I tried
output = int64(calllib('my_library', 'my_function', arg1))
as well as
output = zeros(1, 'int64')
output(1) = calllib('my_library', 'my_function', arg1)
but these just convert my double to int64 after it has already lost the needed precision.