MATLAB REAL-TIME WORKSHOP 7 - TARGET LANGUAGE COMPILER Manuel d'utilisateur télécharger pdf (Page 64)

2 Creating C Language MEX-Files

2-4

Figure 2-1: C MEX Cycle

const mxArray *A

A = prhs[0]

MATLAB

A call to

MEX-file

func:

[C,D]=func(A,B)

tells MATLAB to

pass variables

A and

B to your MEX-file.

C and D are left

unassigned.

mxArray *C

C = plhs[0]

const mxArray *B

B = prhs[1]

mxArray *D

D = plhs[1]

INPUTS

OUTPUTS

func.c

void mexFunction(

int nlhs, mxArray *plhs[],

int nrhs, const mxArray *prhs[])

In the gateway routine:

•Use the

mxCreate functions to create

the MATLAB arrays for your output

arguments. Set

plhs[0], [1], … to the

pointers to the newly created

MATLAB arrays.

•Use the

mxGet functions to extract

your data from

prhs[0], [1], …

•Call your C subroutine passing the

input and output data pointers as

function parameters.

MATLAB

On return from

MEX-file

func:

[C,D]=func(A,B)

plhs[0]

is assigned

to

C and plhs[1] is

assigned to

D.

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 407 408

Commentaires sur ces manuels

Pas de commentaire