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SWZ: C functions to call from WZ code to return values in Matlab (either in a global structure, or in a mat file)

time-shift
Houtan Bastani 2011-02-03 18:18:03 +01:00
parent 3ef85c55c3
commit 8d46da3801
2 changed files with 91 additions and 5 deletions
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77
ms-sbvar/mex/mex_write_to_matlab.c Normal file
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@ -0,0 +1,77 @@
/*
* Copyright (C) 2011 Dynare Team
*
* This file is part of Dynare.
*
* Dynare is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Dynare is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Dynare. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include "modify_for_mex.h"
void
mex_write_to_matlab_matfile(double *data, int rows, int cols, const char *varname, const char *filename)
{
mxArray *toWrite;
toWrite = getMxArray(data, rows, cols);
MATFile *matfile = matOpen(filename, "w");
if (matfile == NULL)
mexErrMsgTxt("Error encountered in mex when opening a .mat file");
if (matPutVariable(matfile, varname, toWrite) != 0 ||
ferror(matGetFp(matfile)) > 0 ||
feof(matGetFp(matfile)) > 0)
mexErrMsgTxt("Error encountered in mex when writing a .mat file");
if (matClose(matfile) != 0)
mexErrMsgTxt("Error encountered in mex when closing a .mat file");
}
void
mex_write_to_matlab_global_struct(double *data, int rows, int cols, const char *varname)
{
mxArray *toWrite;
toWrite = getMxArray(data, rows, cols);
int fieldnumber = mxAddField(globalMatlabStruct, varname);
if (fieldnumber < 0)
mexErrMsgTxt("Error encountered in mex when assigining to global structure");
mxSetFieldByNumber(globalMatlabStruct, 0, fieldnumber, toWrite);
}
mxArray *
getMxArray(double *data, int rows, int cols)
{
mxArray *mat;
double *pind;
int i;
if (rows == 1 && cols == 1)
mat = mxCreateDoubleScalar(data[0]);
else
{
mat = mxCreateDoubleMatrix(rows, cols, mxREAL);
if (mat != NULL)
{
pind = mxGetPr(mat);
for (i = 0; i < rows*cols; i++)
pind[i] = data[i];
}
}
if (mat == NULL)
mexErrMsgTxt("Error encountered in mex: not enough heap space to allocate memory for mxArray");
return mat;
}

19
ms-sbvar/mex/modify_for_mex.h
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2010 Dynare Team
* Copyright (C) 2010-2011 Dynare Team
*
* This file is part of Dynare.
*
@ -19,34 +19,43 @@
#ifndef _MEXMOD
#define _MEXMOD
void swz_exit(int status);
void swz_fprintf_err(const char * str, ...);
extern int constant_seed;
#endif
#endif
#if defined(MATLAB_MEX_FILE) || defined(OCTAVE_MEX_FILE)
#include <dynmex.h>
#include <dynblas.h>
#include <dynlapack.h>
#include <mat.h>
#define swzMalloc mxMalloc
#define swzCalloc mxCalloc
#define swzRealloc mxRealloc
#define swzFree mxFree
mxArray *globalMatlabStruct;
#ifndef _MEXWRITE
#define _MEXWRITE
void mex_write_to_matlab_matfile(double *, int, int, const char *, const char *);
void mex_write_to_matlab_global_struct(double *, int, int, const char *);
mxArray *getMxArray(double *, int, int);
#endif
#else
#define swz_fprintf_stdout printf
#define swzMalloc malloc
#define swzCalloc calloc
#define swzRealloc realloc
#define swzFree free
#endif