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Internal Interface Functions

5-11

Internal Interface Functions

This section uses the Sierpinski Gasket example (gasket.m) to s how several of

the generated interface functions for the C and C++ cases. The remaining

interface functions are generated by the example

foo.m as described earlier in

this chapter.

Interface functions perform argument translation between the standard

calling conve ntions and the Compiler-generat ed code.

C Interface Functions

The C interface functions process any input arguments a nd pass them to the

implementation version of the function,

Mf.

mlx

Interface Function

The Com p ile r always generate s the mlxF interface function, which is used by

feval. At times, the Compiler needs to use feval to perform argument

matching even if the user does not specifically call

feval. For example,

x = cell(1,5);

y = {1 2 3 4 5};

[x{:}] = deal(y{:});

wouldusethe feval interface. The following C code is the corresponding feval

interface (mlxGasket) from the Sierpinski Gasket example. This function calls

the C

Mgasket function.

* The function "mlxGasket" contains the feval interface

* for the "gasket" M-function from file

* "<matlab>\extern\examples\compiler\gasket.m" (lines 1-23).

* The feval function calls the implementation version of

* gasket through this function. This function processes

* any input arguments and passes them to the

* implementation version of the function, appearing above.

void mlxGasket(int nlhs,

mxArray * plhs[],

int nrhs,

mxArray * prhs[]) {

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MATLAB COMPILER RELEASE NOTES Guía de usuario Pagina 127