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4 Stand-Alone Applications

4-42

mlfPrintMatrix is one of the many routines in the MATLAB Math Built-In

Library, which is part of the MATLAB Math Library product.

Finally,

mrankp must free the heap memory allocated to hold matrices and call

the Compiler-generated termination function.

mxDestroyArray(N);

mxDestroyArray(R);

PkgTerminate();/* Terminate the library of M-functions */

Advanced C Example

This section illustrates an advanced example of how to write C code that calls

a compiled M-file. Consider a stand-alone application whose source code

consists of two files:

•

multarg.m, which contains a function named multarg.

•

multargp.c, which contains a C function named main.

multarg.m specifies two input parameters and returns two output parameters.

function [a,b] = multarg(x,y)

a = (x + y) * pi;

b = svd(svd(a));

Thecodeinmultargp.c callsmlfMultarg andthendisplays thetwovaluesthat

mlfMultarg returns.

#include <stdio.h>

#include <string.h>

#include <math.h>

#include "matlab.h"

#include "multpkg.h"/* Include Compiler-generated header file */

static void PrintHandler( const char *text )

{

printf(text);

}

int main( ) /* Programmer written coded to call mlfMultarg */

{

#define ROWS 3

#define COLS 3

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MATLAB COMPILER RELEASE NOTES Guida Utente Pagina 112