Overview
Comment:Numerical solution of algebraic equations implemented for S-function target.

Equation solving requires the Matlab Optimization Toolbox to be installed.

Code has been changed from C++ to C to allow mex files to be built with LCC,
the compiler bundled with Matlab.

Parameters are now obtained from numpar.c instead of a dialogue box.

`mtt <sys> sfun zip` creates all necessary files for building the model mex files.

Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | origin/master | trunk
Files: files | file ages | folders
SHA3-256: 062029b187822b39851e505d09f272f96134572e888bb0a690899a8f846ed0fa
User & Date: geraint@users.sourceforge.net on 2002-05-19 13:01:22
Other Links: branch diff | manifest | tags
Context
2002-05-20
07:12:05
Trying to get oct files generated with -oct check-in: 039197b659 user: gawthrop@users.sourceforge.net tags: origin/master, trunk
2002-05-19
13:01:22
Numerical solution of algebraic equations implemented for S-function target.

Equation solving requires the Matlab Optimization Toolbox to be installed.

Code has been changed from C++ to C to allow mex files to be built with LCC,
the compiler bundled with Matlab.

Parameters are now obtained from numpar.c instead of a dialogue box.

`mtt <sys> sfun zip` creates all necessary files for building the model mex files. check-in: 062029b187 user: geraint@users.sourceforge.net tags: origin/master, trunk

2002-05-17
11:17:35
No longer uses df() if corresponding sensitivity parameter is 0. check-in: a29cbd4fd9 user: gawthrop@users.sourceforge.net tags: origin/master, trunk
Changes
Hide Diffs Side-by-Side Diffs Ignore Whitespace Patch

Modified mttroot/mtt/bin/trans/mtt_header from [c5cc8a3a52] to [60dbd07829].

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# Copyright (C) 2000 by Peter J. Gawthrop

###############################################################
## Version control history
###############################################################
## $Id$
## $Log$
## Revision 1.50  2002/05/15 14:22:25  geraint
## Code for Simulink S-function target written direct to sfun.cc instead of
## calling .mexglx files. This eliminates the sfun dependency on Octave
## ColumnVectors. sys_sfun.cc should build directly on a MS Windows machine
## (can't test this yet).
##
## added sfun.zip target to create source code to export.
##
## Revision 1.49  2002/05/11 01:14:17  geraint
## Fix for [ 553218 ] simpar.oct and simpar.m different.
## Translation added between ColumnVector in base .cc and Octave_map in .oct.
##
## Revision 1.48  2002/05/08 14:51:03  geraint
## Moved matlab/octave data type conversion functions to a separate file.
##
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# Arguments
system=$1
rep=$2
language=$3
fun_name=${1}_${2}

other=$4 # Anything else eg stdin

insertor=\<\<			# help emacs sh-mode out with C++ lines


if [ -z "$system" ]; then
  echo 'Usage: mtt_header sys rep lang [stdin]'
  exit
fi
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	oct_header=yes;
        constant_declaration="const double "
        var_declaration="double "
	minusone="-1"
	map="_map"
        declaredummies=yes
	;;
    sfun)
	modeline="// -*-c++-*- Put Emacs into c++-mode";
	Lc='//'
	Rc=''
    c)
	modeline="/* -*-c-*- Put Emacs into c-mode */";
	Lc='/*'
	Rc='*/'
	Lb='['
	Rb=']'
	start="## BEGIN Code"
	finish="## END Code"
	constant_declaration="const double "
	var_declaration="double "
	minusone="-1"
	;;
    *)
	echo Language $language not supported - sorry; exit 1
esac
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	    ColumnVector | Matrix | *)
		printf "  ${arg_type}\t${w}\t= args(${j}).%s ();\n" ${vector_value}
		;;
	esac
    done
}	

map_mex_inputs ()
map_mex_cc_inputs ()
{
    s=${1:-""}					# comma separated input list
    if [ -z ${s:-""} ];then return; fi
    c=`get_field ${s} 0`			# count of inputs
    i=0
    cat <<EOF
    if (${c} != nrhs)
     {
       std::cerr << "${fun_name} expected " << ${c} << " argument(s): ${s}" << std::endl;
       std::cerr $insertor "${fun_name} expected " $insertor ${c} $insertor " argument(s): ${s}" $insertor std::endl;
       return;
     }
EOF
    while [ ${i} -lt ${c} ]; do
	j=${i}
	i=`expr ${i} + 1`
	w=`get_field ${s} ${i}`		# argument name
        w=`get_field ${s} ${i}`		# argument name
	get_arg_specific_stuff ${w}
	case ${arg_type} in
	    "const double")
		printf "  ${arg_type}\t${w}\t= mtt_double (prhs [${j}]);\n"
		;;
	    ColumnVector | Matrix | *)
		printf "  ${arg_type}\t${w}\t= mtt_${arg_type} (prhs [${j}]);\n"
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  return retval;
}
#endif // (CODEGENTARGET == OCTAVEDLD)

EOF
}

write_mex ()
write_mex_cc ()
{
    func=${1:-"<insert function name>"}
    args=${2:-""}
    cat <<EOF
#if (CODEGENTARGET == MATLABMEX)
#include <mtt_matlab_octave.hh>

extern "C"
{
  void mexFunction (int nlhs, mxArray *plhs[],
		    int nrhs, const mxArray *prhs[])
  {
EOF
  map_mex_inputs ${args}
  map_mex_cc_inputs ${args}
cat <<EOF
  plhs[0] = mtt_mxArray (${func} (${args}));
  }
}
#endif

EOF
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if [ ${language} = "oct" ];then
# standalone
    write_cc_header
    array2constant
    write_cc_footer
# oct and mex code
    write_oct ${system}_${rep} ${args}
    write_mex ${system}_${rep} ${args}
    write_mex_cc ${system}_${rep} ${args}
elif [ $language = "c" ]; then
    array2constant
    cat <<EOF
/* BEGIN Code */
/* END Code */
EOF
else

if [ -n "$noglobals" ]; then
cat<<EOF

## Horrible fudge to make mtt_m2p work
global ...
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Modified mttroot/mtt/cc/mtt_m2cc.sh from [7e5ae6afba] to [71ee6a40d1].

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	cat
	;;
esac
};

fix_comment_delimiter ()
{
    language=${1:-cc}
    case $language in
    # it would be preferable if we didn't use '%' as a delimiter
    # (a % b) gives the remainder of ((int)a / (int)b) in C/C++
	c)
	    sed 's/[%#]\(.*\)/\/* \1 *\//'
	    ;;
	cc | *)
    sed 's/[%#]/\/\//g' | sed 's/\/\/\/\//\/\//g'
    
	    sed 's/[%#]/\/\//g' | sed 's/\/\/\/\//\/\//g'
	    ;;
    esac
};

decrement_indices ()
{    
    # first section appends '-1' to container indices
    # to convert from FORTRAN-type numbering to C-type numbering
    sed 's/mtta(\([0-9][0-9]*\),\([0-9][0-9]*\))/mtta[\1-1,\2-1]/g'	|\
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    sed 's/\([0-9]*\)\(\.\)\{0,1\}\([0-9]*\)\^\([0-9]*\)\(\.\)\{0,1\}\([0-9]*\)/pow \(\1\2\3,\4\5\6\)/g'
};


echo Creating ${OUT}

case ${TARGET} in
    sfun)
	mtt_header ${SYS} ${REP} "sfun"	>  ${TMP}
    c)
	mtt_header ${SYS} ${REP} "c"	>  ${TMP}
	echo "## END Code"		>> ${TMP}
	find_code ${TMP} head		>  ${OUT}
	find_code ${IN} body		|\
	    decrement_indices		|\
	    fix_comment_delimiter	|\
	    fix_comment_delimiter c	|\
	    fix_pow			|\
	    strip_junk			|\
	    ${PARSER}			>> ${OUT}
	find_code ${TMP} foot		>> ${OUT}
	rm ${TMP}
	;;
    cc | *)
	mtt_header ${SYS} ${REP} "oct"	>  ${TMP}
	find_code ${TMP} head		>  ${OUT}
	rep_declarations		>> ${OUT}
	find_code ${IN} body   		|\
	    decrement_indices		|\
	    fortran_to_c_paren		|\
	    fix_comment_delimiter	|\
	    fix_comment_delimiter cc	|\
	    fix_pow			|\
	    strip_junk			|\
	    ${PARSER}			>> ${OUT}
	rep_footer			>> ${OUT}
	find_code ${TMP} foot		>> ${OUT}
	rm ${TMP}
	;;
esac

Modified mttroot/mtt/cc/sympar_txt2h.sh from [f951f86658] to [9a054e0600]. 

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#! /bin/sh
# $Id$
# $Log$
# Revision 1.5  2002/04/28 18:58:06  geraint
# Fixed [ 549658 ] awk should be gawk.
# Replaced calls to awk with call to gawk.
#
# Revision 1.4  2001/08/24 21:41:04  geraint
# Fixed problem with declaration when there are no numerical parameters.
#
# Revision 1.3  2001/03/19 02:28:53  geraint
# Branch merge: merging-ode2odes-exe back to MAIN.
#
# Revision 1.2.2.1  2001/03/16 03:56:54  geraint
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TMP_VAR_NAMES="mtt_tmp mtt_o $*"

IN=${SYS}_sympar.txt
OUT=${SYS}_sympar.h

declare_sys_param ()
{
cat ${IN} | gawk '(NF>0){printf ("static double %s MTT_UNUSED;\t// %s\n", tolower($1), $2)}'
cat ${IN} | gawk '(NF>0){printf ("static double %s MTT_UNUSED;\t/* %s\t*/\n", tolower($1), $2)}'
}

declare_temp_vars ()
{
for name in ${TMP_VAR_NAMES}
do
    echo ""
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#! /usr/bin/make -f

SRC = $(SYS)_sfun.cc $(SYS)_def.h $(SYS)_ae.sfun $(SYS)_ode.sfun $(SYS)_odeo.sfun $(SYS)_state.sfun
all: $(SYS)_sfun.mexglx

$(SYS)_sfun.mexglx: $(SYS)_sfun.c $(SYS)_def.h $(SYS)_sympar.h $(SYS)_numpar.c $(SYS)_ode.c $(SYS)_odeo.c $(SYS)_state.c $(SYS)_sfun_ae.mexglx 
	echo Creating $@
all: $(SYS)_sfun.mexglx
	mex $(SYS)_sfun.c
	cp *_sfun*mexglx ..

$(SYS)_sfun.mexglx: $(SRC)
	mex $(SYS)_sfun.cc
$(SYS)_sfun.c:: ${MTT_REP}/sfun_rep/sfun.c.tmpl
	echo Creating $@
	cat $^ | sed 's/<mtt_model_name>/$(SYS)/g' > $@

$(SYS)_sfun_ae.mexglx: $(SYS)_sfun_ae.c $(SYS)_def.h $(SYS)_ae.c
	echo Creating $@
	mex $(SYS)_sfun_ae.c

$(SYS)_sfun.cc:: ${MTT_REP}/sfun_rep/sfun.cc.tmpl
$(SYS)_sfun_ae.c:: ${MTT_REP}/sfun_rep/ae.c.tmpl
	echo Creating $@
	cat $^ | sed 's/<mtt_model_name>/$(SYS)/g' > $@

$(SYS)_sfun.zip: $(SRC)
$(SYS)_sfun.zip: $(SYS)_sfun.c $(SYS)_sfun_ae.c $(SYS)_def.h $(SYS)_sympar.h $(SYS)_ae.c $(SYS)_numpar.c $(SYS)_ode.c $(SYS)_odeo.c $(SYS)_state.c README
	echo Creating $@
	zip $@ $^

README:: ${MTT_REP}/sfun_rep/README.tmpl
	echo Creating $@
	cat $^ | sed 's/<mtt_model_name>/$(SYS)/g' > $@

$(SYS)_ae.sfun: $(SYS)_ae.m
	${MTT_CC}/mtt_m2cc.sh $(SYS) ae sfun cat 
$(SYS)_ae.c: $(SYS)_ae.m
	echo Creating $@
	${MTT_CC}/mtt_m2cc.sh $(SYS) ae c cat 

$(SYS)_numpar.c: $(SYS)_numpar.m
	echo Creating $@
	${MTT_CC}/mtt_m2cc.sh $(SYS) numpar c cat

$(SYS)_ode.sfun: $(SYS)_ode.m
	${MTT_CC}/mtt_m2cc.sh $(SYS) ode sfun cat
$(SYS)_ode.c: $(SYS)_ode.m
	echo Creating $@
	${MTT_CC}/mtt_m2cc.sh $(SYS) ode c cat

$(SYS)_odeo.sfun: $(SYS)_odeo.m
	${MTT_CC}/mtt_m2cc.sh $(SYS) odeo sfun cat
$(SYS)_odeo.c: $(SYS)_odeo.m
	echo Creating $@
	${MTT_CC}/mtt_m2cc.sh $(SYS) odeo c cat

$(SYS)_state.sfun: $(SYS)_state.m
	${MTT_CC}/mtt_m2cc.sh $(SYS) state sfun cat
$(SYS)_state.c: $(SYS)_state.m
	echo Creating $@
	${MTT_CC}/mtt_m2cc.sh $(SYS) state c cat

%::
	mtt -q $(OPTS) `echo $* | sed 's/\(.*\)_\(.*\)\.\(.*\)/\1 \2 \3/'`

Added mttroot/mtt/lib/rep/sfun_rep/README.tmpl version [7562840818]. 










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To build a Simulink funtion of the <mtt_model_name> model without using MTT:

mex <mtt_model_name>_sfun.c

If numerical solution of algebraic equations is also required:

mex <mtt_model_name>_sfun_ae.c








Added mttroot/mtt/lib/rep/sfun_rep/ae.c.tmpl version [61cef996f8].














































































































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/* -*-c-*-	Put emacs into c-mode */

#include <stdio.h>
#include <stdlib.h>

#include <mex.h>
#include "<mtt_model_name>_def.h"

/* utility procedures */

double *
array_of_double (size_t n)
{
  void *p = calloc (n, sizeof (double));
  if (! p) {
    fprintf (stderr, "*** Error: failed to allocate memory\n");
  }
  return (double *) p;
}

/* system equations */

static double *
<mtt_model_name>_ae (double *mttyz,
		     const double *mttx,
		     const double *mttu,
		     const double mttt,
		     const double *mttpar)
{
#include "<mtt_model_name>_ae.c"
}

/* generic mex function */

#ifdef __cplusplus
extern "C" {
#endif

void
mexFunction (int nlhs, mxArray *plhs[],
	     int nrhs, const mxArray *prhs[])
{
  double *mttyz;		/* residuals */

  double *mttx;			/* states */
  double *mttu;			/* known + unknown inputs */
  double mttt;			/* time */
  double *mttpar;		/* parameters */

  unsigned int i;
  double *p;

  mttyz		= array_of_double (MTTNYZ);

  mttx		= array_of_double (MTTNX);
  mttu		= array_of_double (MTTNU + MTTNYZ);
  mttpar	= array_of_double (MTTNPAR);

  /* get trial values */
  p = mxGetPr (prhs[0]);
  for (i = 0; i < MTTNYZ; i++) {
    mttu[MTTNU + i] = p[i];
  }

  /* get states */
  p = mxGetPr (prhs[1]);
  for (i = 0; i < MTTNX; i++) {
    mttx[i] = p[i];
  }

  /* get known inputs */
  p = mxGetPr (prhs[2]);
  for (i = 0; i < MTTNU; i++) {
    mttu[i] = p[i];
  }

  /* get time */
  p = mxGetPr (prhs[3]);
  mttt = *p;

  /* get parameters */
  p = mxGetPr (prhs[4]);
  for (i = 0; i < MTTNPAR; i++) {
    mttpar[i] = p[i];
  }
  
  /* evaluate residuals */
  <mtt_model_name>_ae (mttyz, mttx, mttu, mttt, mttpar);
  
  /* return residuals */
  plhs[0] = mxCreateDoubleMatrix (MTTNYZ, 1, mxREAL);
  p = mxGetPr (plhs[0]);
  for (i = 0; i < MTTNYZ; i++) {
    p[i] = mttyz[i];
  }

  /* release memory */
  free (mttx);
  free (mttu);
  free (mttpar);
  free (mttyz);
}

#ifdef __cplusplus
}
#endif








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/* -*-c-*-
 * <mtt_model_name>_sfun.c:
 * Matlab S-function simulation of <mtt_model_name>
 */

#define S_FUNCTION_NAME <mtt_model_name>_sfun
#define S_FUNCTION_LEVEL 2

#if (0)				/* DEBUG? */
#define PRINT_ENTER(f) fprintf (stderr, "Entered %s\n", f)
#define PRINT_LEAVE(f) fprintf (stderr, "Leaving %s\n", f)
#else
#define PRINT_ENTER(f)
#define PRINT_LEAVE(f)
#endif /* DEBUG? */

#include <stdio.h>
#include <stdlib.h>

#include "simstruc.h"
#include "<mtt_model_name>_def.h"

static double *mttdx;		/* pointer to rates */
static double *mttu;		/* pointer to inputs */
static double *mttpar;		/* pointer to parameters */
static double *mttx;		/* pointer to states */
static double *mtty;		/* pointer to outputs */
static double *mttyz;		/* pointer to residuals */
static double  mttt;		/* time */

static unsigned int i;		/* loop counter */

/* system equations */

static void
<mtt_model_name>_ae (void)
{
#include "<mtt_model_name>_ae.c"
}

static void
<mtt_model_name>_ode (void)
{
#include "<mtt_model_name>_ode.c"
}

static void
<mtt_model_name>_odeo (void)
{
#include "<mtt_model_name>_odeo.c"
}

static void
<mtt_model_name>_state (void)
{
#include "<mtt_model_name>_state.c"
}

/* utility procedures */

static double *
array_of_double (size_t n)
{
  void *p = calloc (n, sizeof (double));
  if (! p) {
    fprintf (stderr, "*** Error: failed to allocate memory\n");
  }
  return (double *) p;
}

static void
initialise_arrays (void)
{
  PRINT_ENTER("initialise_arrays");

  mttdx		= array_of_double (MTTNX);
  mttpar	= array_of_double (MTTNPAR);
  mttu		= array_of_double (MTTNU + MTTNYZ);
  mttx		= array_of_double (MTTNX);
  mtty		= array_of_double (MTTNY);
  mttyz		= array_of_double (MTTNYZ);

  PRINT_LEAVE("initialise_arrays");
}

static void
update_states_from_simulink (SimStruct *S)
{
  PRINT_ENTER("update_states_from_simulink");
  for (i = 0; i < MTTNX; i++) {
    mttx[i] = ssGetContStates (S)[i];
  }
  PRINT_LEAVE("update_states_from_simulink");
}

static void
update_inputs_from_simulink (SimStruct *S)
{
  PRINT_ENTER("update_inputs_from_simulink");
  for (i = 0; i < MTTNU; i++) {
    mttu[i] = *ssGetInputPortRealSignalPtrs (S, i)[0];
  }
  PRINT_LEAVE("update_inputs_from_simulink");
}

static void
update_inputs_from_solver (void)
{
  mxArray *MTT_MATLAB_P;
  mxArray *MTT_MATLAB_T;
  mxArray *MTT_MATLAB_U;
  mxArray *MTT_MATLAB_Ui;
  mxArray *MTT_MATLAB_X;

  double *p;

  PRINT_ENTER ("update_inputs_from_solver");

  /* starting value for solver - start with zero */
  MTT_MATLAB_Ui = mxCreateDoubleMatrix (MTTNYZ, 1, mxREAL);
  mxSetName (MTT_MATLAB_Ui, "MTT_Ui");
  p = mxGetPr (MTT_MATLAB_Ui);
  for (i = 0; i < MTTNYZ; i++) {
    p[i] = 0.0;
  }
  mexPutArray (MTT_MATLAB_Ui, "base");

  /* put states into matlab workspace */
  MTT_MATLAB_X = mxCreateDoubleMatrix (MTTNX, 1, mxREAL);
  mxSetName (MTT_MATLAB_X, "MTT_X");
  p = mxGetPr (MTT_MATLAB_X);
  for (i = 0; i < MTTNX; i++) {
    p[i] = mttx[i];
  }
  mexPutArray (MTT_MATLAB_X, "base");

  /* put known inputs into matlab workspace */
  MTT_MATLAB_U = mxCreateDoubleMatrix (MTTNU, 1, mxREAL);
  mxSetName (MTT_MATLAB_U, "MTT_U");
  p = mxGetPr (MTT_MATLAB_U);
  for (i = 0; i < MTTNU; i++) {
    p[i] = mttu[i];
  }
  mexPutArray (MTT_MATLAB_U, "base");

  /* put time into matlab workspace */
  MTT_MATLAB_T = mxCreateDoubleMatrix (1, 1, mxREAL);
  mxSetName (MTT_MATLAB_T, "MTT_T");
  *mxGetPr (MTT_MATLAB_T) = mttt;
  mexPutArray (MTT_MATLAB_T, "base");

  /* put parameters into matlab workspace */
  MTT_MATLAB_P = mxCreateDoubleMatrix (MTTNPAR, 1, mxREAL);
  mxSetName (MTT_MATLAB_P, "MTT_P");
  p = mxGetPr (MTT_MATLAB_P);
  for (i = 0; i < MTTNPAR; i++) {
    p[i] = mttpar[i];
  }
  mexPutArray (MTT_MATLAB_P, "base");

  /* call fsolve */
  mexEvalString ("MTT_Ui = fsolve (@<mtt_model_name>_sfun_ae, MTT_Ui, optimset('display','off'), MTT_X, MTT_U, MTT_T, MTT_P);");

  /* retrieve result */
  MTT_MATLAB_Ui = mexGetArray ("MTT_Ui", "base");
  p = mxGetPr (MTT_MATLAB_Ui);
  for (i = 0; i < MTTNYZ; i++) {
    mttu[MTTNU + i] = p[i];
  }

  /* free memory */
  mxDestroyArray (MTT_MATLAB_P);
  mxDestroyArray (MTT_MATLAB_T);
  mxDestroyArray (MTT_MATLAB_U);
  mxDestroyArray (MTT_MATLAB_Ui);
  mxDestroyArray (MTT_MATLAB_X);

  PRINT_LEAVE ("update_inputs_from_solver");
}

static void
update_simtime_from_simulink (SimStruct *S)
{
  PRINT_ENTER("update_simtime_from_simulink");
  mttt = ssGetT (S);
  PRINT_LEAVE("update_simtime_from_simulink");
}

/* S-function methods */

static void mdlInitializeSizes(SimStruct *S)
{
  PRINT_ENTER("mdlInitializeSizes");
  ssSetNumSFcnParams(S, 0); 
  if (ssGetNumSFcnParams(S) != ssGetSFcnParamsCount(S)) {
    PRINT_LEAVE("mdlInitializeSizes");
    return;
  }
  
  ssSetNumContStates(S, MTTNX);
  ssSetNumDiscStates(S, 0);
  
  if (!ssSetNumInputPorts(S, MTTNU)) return;
    for (i = 0; i < MTTNU; i++) {
      ssSetInputPortWidth(S, i, 1);
      ssSetInputPortDirectFeedThrough(S, i, 1);
    }
    
    if (!ssSetNumOutputPorts(S, MTTNY)) return;
    for (i = 0; i < MTTNY; i++) {
      ssSetOutputPortWidth(S, i, 1);
    }
    
    ssSetNumSampleTimes(S, 1);
    ssSetNumRWork(S, 0);
    ssSetNumIWork(S, 0);
    ssSetNumPWork(S, 0);
    ssSetNumModes(S, 0);
    ssSetNumNonsampledZCs(S, 0);
    
    ssSetOptions(S, SS_OPTION_EXCEPTION_FREE_CODE);
    
    initialise_arrays ();
    PRINT_LEAVE("mdlInitializeSizes");
}

static void mdlInitializeSampleTimes(SimStruct *S)
{
  PRINT_ENTER("mdlInitializeSampleTimes");
  ssSetSampleTime(S, 0, CONTINUOUS_SAMPLE_TIME);
  ssSetOffsetTime(S, 0, 0.0);
  PRINT_LEAVE("mdlInitializeSampleTimes");
}

#define MDL_INITIALIZE_CONDITIONS
static void mdlInitializeConditions(SimStruct *S)
{
#include "<mtt_model_name>_sympar.h"

  PRINT_ENTER("mdlInitializeConditions");

#include "<mtt_model_name>_numpar.c"

  <mtt_model_name>_state ();

  for (i = 0; i < MTTNX; i++) {
    ssGetContStates (S)[i] = mttx[i];
  }

  PRINT_LEAVE("leaving mdlInitializeConditions");
}

static void mdlOutputs(SimStruct *S, int_T tid)
{
  PRINT_ENTER("entered mdlOutputs");

  update_states_from_simulink (S);
  update_inputs_from_simulink (S);
  if (MTTNYZ > 0) {
    update_inputs_from_solver ();
  }
  update_simtime_from_simulink (S);

  UNUSED_ARG(tid); /* not used in single tasking mode */

  <mtt_model_name>_odeo ();

  for (i = 0; i < MTTNY; i++) {
      ssGetOutputPortRealSignal (S,i)[0] = mtty[i];
  }

  PRINT_LEAVE("leaving mdlOutputs");
}

#define MDL_DERIVATIVES
static void mdlDerivatives(SimStruct *S)
{
  PRINT_ENTER("entered mdlDerivatives\n");
    
  update_states_from_simulink (S);
  update_inputs_from_simulink (S);
  if (MTTNYZ > 0) {
    update_inputs_from_solver ();
  } 
  update_simtime_from_simulink (S);

  <mtt_model_name>_ode ();

  for (i = 0; i < MTTNX; i++) {
    ssGetdX (S)[i] = mttdx[i];
  }

  PRINT_LEAVE("leaving mdlDerivatives");
}

static void mdlTerminate(SimStruct *S)
{
  PRINT_ENTER("entered mdlTerminate");
  UNUSED_ARG(S);

  free (mttdx);
  free (mttpar);
  free (mttu);
  free (mttx);
  free (mtty);
  free (mttyz);

  PRINT_LEAVE("leaving mdlTerminate");
}

#ifdef  MATLAB_MEX_FILE    /* Is this file being compiled as a MEX-file? */
#include "simulink.c"      /* MEX-file interface mechanism */
#else
#include "cg_sfun.h"       /* Code generation registration function */
#endif








Deleted mttroot/mtt/lib/rep/sfun_rep/sfun.cc.tmpl version [cc87f430f2].



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// -*-c++-*-
// <mtt_model_name>_sfun.c:
// Matlab S-function simulation of <mtt_model_name>

#define S_FUNCTION_NAME <mtt_model_name>_sfun
#define S_FUNCTION_LEVEL 2

#include "simstruc.h"
#include "<mtt_model_name>_def.h"

static mxArray *dX		= mxCreateDoubleMatrix (MTTNX	, 1, mxREAL);
static mxArray *P		= mxCreateDoubleMatrix (MTTNPAR	, 1, mxREAL);
static mxArray *T		= mxCreateDoubleMatrix (1	, 1, mxREAL);
static mxArray *U		= mxCreateDoubleMatrix (MTTNU	, 1, mxREAL);
static mxArray *X		= mxCreateDoubleMatrix (MTTNX	, 1, mxREAL);
static mxArray *Y		= mxCreateDoubleMatrix (MTTNY	, 1, mxREAL);
static mxArray *YZ		= mxCreateDoubleMatrix (MTTNYZ	, 1, mxREAL);

static double *mttdx		= mxGetPr (dX);
static double *mttu		= mxGetPr (U);
static double *mttpar		= mxGetPr (P);
static double *mttx		= mxGetPr (X);
static double *mtty		= mxGetPr (Y);
static double *mttyz		= mxGetPr (YZ);
static double *mtttp		= mxGetPr (T);

void
update_parameters_from_simulink (SimStruct *S)
{
  for (int i = 0; i < MTTNPAR; i++) {
    mttpar [i] = *mxGetPr (ssGetSFcnParam (S, i));
  }
}

void
update_states_from_simulink (SimStruct *S)
{
  static double *x;
  x = ssGetContStates (S);
  for (int i = 0; i < MTTNX; i++) {
    mttx [i] = x [i];
  }
}

void
update_inputs_from_simulink (SimStruct *S)
{
  for (int i = 0; i < MTTNU; i++) {
    mttu [i] = *ssGetInputPortRealSignalPtrs (S, i)[0];
  }
}

void
update_simtime_from_simulink (SimStruct *S)
{
  mtttp [0] = ssGetT (S);
}

// S-function methods

static void mdlInitializeSizes(SimStruct *S)
{
    ssSetNumSFcnParams(S, MTTNPAR); 
    if (ssGetNumSFcnParams(S) != ssGetSFcnParamsCount(S)) {
        return;
    }

    ssSetNumContStates(S, MTTNX);
    ssSetNumDiscStates(S, 0);

    if (!ssSetNumInputPorts(S, MTTNU)) return;
    for (int i = 0; i < MTTNU; i++) {
      ssSetInputPortWidth(S, i, 1);
      ssSetInputPortDirectFeedThrough(S, i, 1);
    }

    if (!ssSetNumOutputPorts(S, MTTNY)) return;
    for (int i = 0; i < MTTNY; i++) {
      ssSetOutputPortWidth(S, i, 1);
    }

    ssSetNumSampleTimes(S, 1);
    ssSetNumRWork(S, 0);
    ssSetNumIWork(S, 0);
    ssSetNumPWork(S, 0);
    ssSetNumModes(S, 0);
    ssSetNumNonsampledZCs(S, 0);

    ssSetOptions(S, SS_OPTION_EXCEPTION_FREE_CODE);
}

static void mdlInitializeSampleTimes(SimStruct *S)
{
    ssSetSampleTime(S, 0, CONTINUOUS_SAMPLE_TIME);
    ssSetOffsetTime(S, 0, 0.0);
}

#define MDL_INITIALIZE_CONDITIONS
static void mdlInitializeConditions(SimStruct *S)
{
  update_parameters_from_simulink (S);

#include "<mtt_model_name>_state.sfun"

  for (int i = 0; i < MTTNX; i++) {
    ssGetContStates (S)[i] = mttx [i];
  }
}

static void mdlOutputs(SimStruct *S, int_T tid)
{
  update_states_from_simulink (S);
  update_inputs_from_simulink (S);
  update_simtime_from_simulink (S);
  update_parameters_from_simulink (S);

  UNUSED_ARG(tid); // not used in single tasking mode

#include "<mtt_model_name>_odeo.sfun"

  for (int i = 0; i < MTTNY; i++) {
      ssGetOutputPortRealSignal (S,i)[0] = mtty [i];
  }
}

#define MDL_DERIVATIVES
static void mdlDerivatives(SimStruct *S)
{
  update_states_from_simulink (S);
  update_inputs_from_simulink (S);
  update_simtime_from_simulink (S);
  update_parameters_from_simulink (S);

#include "<mtt_model_name>_ode.sfun"

  for (int i = 0; i < MTTNX; i++) {
    ssGetdX (S)[i] = mttdx [i];
  }
}

static void mdlTerminate(SimStruct *S)
{
    UNUSED_ARG(S);
}

#ifdef  MATLAB_MEX_FILE    /* Is this file being compiled as a MEX-file? */
#include "simulink.c"      /* MEX-file interface mechanism */
#else
#include "cg_sfun.h"       /* Code generation registration function */
#endif






















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