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5 Controlling Code Generation

5-4

foo M-File

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

if nargout == 0

elseif nargout == 1

a = x;

elseif nargout == 2

a = x;

b = y;

end

fun M-File

function a = fun(b)

a(1) = b(1) .* b(1);

a(2) = b(1) + b(2);

a(3) = b(2) / 4;

sample M-File

function y = sample( varargin )

varargin{:}

y = 0;

Generated Code

This chapter investigates the generated header fil es, interface functions, and

wrapper functions for the C MEX, stand-alone C and C++ t argets, and C and

C++ libraries.

When you use the MATLAB Compiler to compile an M-file, it generates these

files:

•C or C++ code, depending on your target language (

-L) specification

•Header file

•Wrapper file, depending on the

-W option

The C or C++ code that is generated by the Compiler and the header file are

independent of the final target type and target platform. That is, the C or C++

code and header file are identical no matter what the desired final output. The

wrapperfileprovidesthe code necessaryt o support theoutputexecutabletype.

So, the wrapper file is different for each execut able type.

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