MATLAB Compiler

Compiling MATLAB Provided M-Files Separately

The M-file mrank.m contains a call to rank. The MATLAB Compiler translates the call to rank into a C call to mlfRank. The mlfRank routine is part of the MATLAB M-File Math Library. The mlfRank routine behaves in stand-alone applications exactly as the rank function behaves in the MATLAB interpreter. However, if this default behavior is not desirable, you can create your own version of rank or mlfRank.

One way to create a new version of rank is to copy MATLAB's own source code for rank and then to edit this copy. MATLAB implements rank as the M-file rank.m rather than as a built-in command. To see MATLAB's code for rank.m, enter

type rank

Copy this code into a file named rank.m located in the same directory as mrank.m and main.m. Then, modify your version of rank.m. After completing the modifications, compile rank.m.

mcc -t rank

Compiling rank.m generates file rank.c, which contains a function named mlfRank. Then, compile the other M-files composing the stand-alone application.

mcc -t main.m                     (produces main.c)
mcc -t mrank.m                    (produces mrank.c)
mcc -W main main mrank rank.m     (produces main_main.c)

To compile and link all four C source code files (main.c, rank.c, mrank.c, and main_main.c) into a stand-alone application, use

mcc -m main_main.c main.c rank.c mrank.c

The resulting stand-alone application uses your customized version of mlfRank rather than the default version of mlfRank stored in the MATLAB Toolbox Library.

Note    On PCs running Windows, as well as SGI, SGI64, and IBM, if a function in the MATLAB Toolbox Library calls mlfRank, it will call the one found in the Library and not your customized version. We recommend that you call your version of rank something else, for example, myrank.m.

Alternative Ways of Compiling M-Files

Compiling mrank.m and rank.m as Helper Functions