MATLAB C++ Math Library Reference

mwArray svd(mwArray *S, mwArray *V, const mwArray &X,
const mwArray &Zero);
Note Contrastthedatatypeforanoutputargumentwiththedatatypeforan
input argument. The type for an output argument is a pointer to an mwArray.
The type for an input argument is an mwArray. Theconst mwArray & in the
prototype improves the efficiency of the function, but you can ignore the const
and & and just pass in an mwArray.)
Translating MATLAB Syntax into C++ Syntax
This procedure translates the MATLAB call [U,S,V] = svd(X,0) into a C++
call. The procedure applies to library functions in general.
Note that within a call to a MATLAB C++ Math Library function, an output
argument is preceded by &; an input argument is not.
1 Declare input, output, and return variables as mwArray variables, and
assign values to the input variables.
2 Make the first MATLAB output argument the return value from the
function.
U =
3 Pass any other output arguments as the first arguments to the function.
U = svd(&S,&V,
4 Pass the input arguments to the C++ function, following the output
arguments.
U = svd(&S,&V,X,0);
The translation is complete.
Note that if you see [] as a MATLAB input argument, you should pass
mwArray() as the C++ argument. For example,
B = cplxpair(A,[],dim)
becomes
B = cplxpair(A,mwArray(),dim);
4