MATLAB: How to make mex file of C program in matlab

huff2mat.munravel.c

I have to run a matlab code namely "huff2mat.m" but it uses a C file namely "unravel.c". It also asks me to make a mex file of it. How can i use the file "unravel.c" in matlab.

Best Answer

if it is mex file, its mean C code for matlab. then simply compile it by this command in matlab editor.

mex unravel.c;

then you can call unravel as function in matlab.

Related Solutions

MATLAB: Do I get a Linker error (LNK2019) when trying to compile a MEX file using MATLAB 7.8 (R2009a)

The support for all the MATLAB 4.0 and 5.0 MEX APIs was deprecated starting with MATLAB 6 (R13) and has been fully removed with MATLAB 7.8 (R2009a).

The documentation for these functions was removed in R2006a. The following page in the documentation lists the obsolete functions and their replacements:

Obsolete Functions No Longer Documented

http://www.mathworks.com/help/matlab/release-notes.html#f34-1014013

The obsolete functions are listed below by category:

- MAT-File Access

matDeleteArray (C and Fortran)

matDeleteMatrix (C and Fortran)

matGetArray (C and Fortran)

matGetArrayHeader (C and Fortran)

matGetFull (C and Fortran)

matGetMatrix (C and Fortran)

matGetNextArray (C and Fortran)

matGetNextArrayHeader (C and Fortran)

matGetNextMatrix (C and Fortran)

matGetString (C and Fortran)

matPutArray (C and Fortran)

matPutArrayAsGlobal (C and Fortran)

matPutFull (C and Fortran)

matPutMatrix (C and Fortran)

matPutString (C and Fortran)

- MX Array Manipulation

mxClearLogical (C and Fortran)

mxCreateFull (C and Fortran)

mxCreateScalarDouble (C and Fortran)

mxFreeMatrix (C and Fortran)

mxGetName (C and Fortran)

mxIsFull (C and Fortran)

mxIsString (C and Fortran)

mxSetLogical (C and Fortran)

mxSetName (C and Fortran)

- MEX-Files

mexAddFlops (C)

mexGetArray (C and Fortran)

mexGetArrayPtr (C and Fortran)

mexGetEps (C and Fortran)

mexGetFull (C and Fortran)

mexGetGlobal (C and Fortran)

mexGetInf (C and Fortran)

mexGetMatrix (C and Fortran)

mexGetMatrixPtr (C and Fortran)

mexGetNaN (C and Fortran)

mexIsFinite (C and Fortran)

mexIsInf (C and Fortran)

mexIsNaN (C and Fortran)

mexPutArray (C and Fortran)

mexPutFull (C and Fortran)

mexPutMatrix (C and Fortran)

- MATLAB Engine

engGetArray (C and Fortran)

engGetFull (C and Fortran)

engGetMatrix (C and Fortran)

engPutArray (C and Fortran)

engPutFull (C and Fortran)

engPutMatrix (C and Fortran)

engSetEvalCallback (C)

engSetEvalTimeout (C)

engWinInit (C)

MATLAB: Building Mex file with Fortan

Your main problem is that you need to create the output array PLHS(1) before you access it. Also your NLHS and NRHS types are wrong. Try this:

#include <fintrf.h>
C
C Gateway routine
C
    SUBROUTINE MEXFUNCTION(NLHS, PLHS, NRHS, PRHS)
    implicit none
C mexFunction arguments:
    MWPOINTER PLHS(*), PRHS(*)
    INTEGER NLHS, NRHS
    mwPointer, external :: mxGetPr, mxGetPi
    mwPointer, external :: mxCreateDoubleMatrix, mxCreateNumericArray
    mwSize, external :: mxGetM, mxGetN
    MWPOINTER YPP 
    mwSize M, N
    integer*4 ComplexFlag
    REAL *8 RYPP(1)
    RYPP(1) = 10
    M = 1
    N = 1
    ComplexFlag = 0
    PLHS(1) = mxCreateDoubleMatrix( M, N, ComplexFlag )
    YPP = MXGETPR(PLHS(1))
    CALL MXCOPYREAL8TOPTR(RYPP, YPP, M*N)
    RETURN
    END

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