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#! /bin/sh

     ###################################### 
     ##### Model Transformation Tools #####
    ######################################

###############################################################
## Version control history
###############################################################
## $Id$
## $Log$
## Revision 1.60  2001/07/16 22:23:00  geraint
## Fixed misleading variable name in .cc rep.
##
## Revision 1.59  2001/07/13 04:54:04  geraint
## Branch merge: numerical-algebraic-solution back to main.
##
## Revision 1.58  2001/07/13 00:51:39  geraint
## Fixed generation of odes.sg from .m and .oct simulations.
## .cc, .m and .oct simulations now all write mtt_data (lower case).
##
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fi

echo Creating $filename with $method integration method

# Find system constants
Nx=`mtt_getsize $sys x` # States
Nu=`mtt_getsize $sys u` # Inputs 
Ny=`mtt_getsize $sys y` # Inputs  
Ny=`mtt_getsize $sys y` # Outputs  

case "$method" in
if [ "$method" = "implicit" ]; then
    ode=csex
    odeo=cseo
    algorithm="mtt_implicit(x,dx,AA,AAx,ddt,$Nx,open_switches)"
else
    ode=ode
    odeo=odeo
    algorithm="mtt_euler(x,dx,ddt,$Nx,open_switches)"
    "implicit")
	ode=csex
	odeo=cseo
	algorithm="mtt_implicit(x,dx,AA,AAx,ddt,$Nx,open_switches)"
	;;
    "dassl")
	ode=ode
	odeo=odeo
	algorithm="mtt_dassl(x,u,t,par,dx,ddt,MTTNX,MTTNYZ,open_switches)"
	;;
    "euler" | "rk4" | *)
	ode=ode
	odeo=odeo
	algorithm="mtt_euler(x,dx,ddt,$Nx,open_switches)"
fi
	;;
esac

make_m()
{
#lang_header  $1 ode2odes m  'x,par,simpar' '[Y,X,t]' > $filename
mtt_header ${sys} ode2odes m > $filename
cat <<EOF >> $filename 
global MTT_data;
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extern ColumnVector F${sys}_${odeo} (
	ColumnVector &x,
	ColumnVector &u,
	const double &t,
	ColumnVector &par);

EOF
if [ "$method" != "implicit" ]; then
case "$method" in
cat <<EOF >> $filename
extern ColumnVector Fmtt_euler (
	ColumnVector &x,
	const ColumnVector &dx,
	const double &ddt,
	const int &nx,
	const ColumnVector &open_switches);
 
    "implicit")
EOF
else
cat <<EOF >> $filename
	cat <<EOF >> $filename
extern ColumnVector Fmtt_implicit (
	ColumnVector &x,
	ColumnVector &dx,
	Matrix &AA,
	ColumnVector &AAx,
	const double &ddt,
	const int &nx,
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extern ColumnVector F${sys}_smxax (
	ColumnVector &x,
	ColumnVector &u,
	const double &t,
	ColumnVector &par);
 
EOF
    ;;
    "dassl")
	cat <<EOF >> $filename
extern ColumnVector Fmtt_dassl (
	ColumnVector &x,
	const ColumnVector &u,
	const double &t,
	const ColumnVector &par,
	const ColumnVector &dx,
	const double &ddt,
	const int nx,
	const int nyz,
	const ColumnVector &open_switches);
fi

EOF
    ;;
    "euler" | "rk4" | *)
	cat <<EOF >> $filename
extern ColumnVector Fmtt_euler (
	ColumnVector &x,
	const ColumnVector &dx,
	const double &ddt,
	const int &nx,
	const ColumnVector &open_switches);
 
EOF
    ;;
esac
cat <<EOF >> $filename

void set_signal_handlers (void);

#endif // STANDALONE

ColumnVector
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  return F${sys}_numpar ();
#else
  static octave_value_list args, f;
  f = feval ("${sys}_numpar", args, 1);
  return f(0).${vector_value} ();
#endif
}

#ifdef STANDALONE
ColumnVector
Fmtt_residual (const ColumnVector &X,
	      const ColumnVector &DX,
	      double t)
{
#else // !STANDALONE
DEFUN_DLD (mtt_residual, args, , "mtt_residual")
{
    static ColumnVector	X  (MTTNX+MTTNYZ);
    static ColumnVector	DX (MTTNX+MTTNYZ);
    static double      	t;

    X  = args(0).${vector_value} ();
    DX = args(1).${vector_value} ();
    t  = args(2).double_value ();
#endif // STANDALONE

    static ColumnVector residual (MTTNX+MTTNYZ);
    static ColumnVector U (MTTNU+MTTNYZ);
    static ColumnVector u (MTTNU);
    static ColumnVector y (MTTNY,0.0);
    static ColumnVector par (MTTNPAR);
    static ColumnVector dx(MTTNX);
    static ColumnVector yz(MTTNYZ);

    static ColumnVector x (MTTNX);
    static ColumnVector ui (MTTNYZ);

    static octave_value_list new_args;

    x = X.extract (0,MTTNX-1);
    if (MTTNYZ > 0)
      ui = X.extract (MTTNX,MTTNX+MTTNYZ-1);    

#ifdef STANDALONE
    par = F${sys}_numpar();
    u = F${sys}_input(x,y,t,par);
#else
    par = feval ("${sys}_numpar",  new_args, 1)(0).${vector_value} ();
    new_args(0) = octave_value (x);
    new_args(1) = octave_value (u);
    new_args(2) = octave_value (t);
    new_args(3) = octave_value (par);
    u = feval ("${sys}_input", new_args, 1)(0).${vector_value} ();
#endif

    U.insert (u,0);
    if (MTTNYZ > 0)
      U.insert (ui,MTTNX);

#ifdef STANDALONE
    dx = F${sys}_${ode} (x,U,t,par);
    yz = F${sys}_ae (x,U,t,par);
#else
    new_args(1) = octave_value (U);
    dx = feval ("${sys}_${ode}", new_args, 1)(0).${vector_value} ();
    yz = feval ("${sys}_ae", new_args, 1)(0).${vector_value} ();
#endif

    for (register int i = 0; i < MTTNX; i++)
      residual (i) = dx(i) - DX(i);
    
    if (MTTNYZ > 0)
      residual.insert (yz,MTTNX);

#ifdef STANDALONE
    return residual;
#else // !STANDALONE
    return octave_value (residual);
#endif // STANDALONE
}
    

inline Octave_map
mtt_simpar (void)
{
#ifdef STANDALONE
  return F${sys}_simpar ();
#else
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  args (3) = octave_value (par);
  f = feval ("${sys}_${odeo}", args, 1);
  return f(0).${vector_value} ();
#endif
}

EOF
if [ "$method" != "implicit" ];then
case "$method" in
cat <<EOF >> $filename
inline ColumnVector
mtt_euler (ColumnVector &x,
	   const ColumnVector &dx,
	   const double &ddt,
	   const int &nx,
	   const ColumnVector &open_switches)
{
#ifdef STANDALONE
  return Fmtt_euler (x, dx, ddt, nx, open_switches);
#else
  static octave_value_list args, f;
  args (0) = octave_value (x);
  args (1) = octave_value (dx);
  args (2) = octave_value (ddt);
  args (3) = octave_value ((double)nx);
  args (4) = octave_value (open_switches);
  f = feval ("mtt_euler", args, 1);
  return f(0).${vector_value} ();
#endif
}

    "implicit")
EOF
else
cat <<EOF >> $filename
	cat <<EOF >> $filename
inline ColumnVector
mtt_implicit (ColumnVector &x,
	      ColumnVector &dx,
	      Matrix &AA,
	      ColumnVector &AAx,
	      const double &ddt,
	      const int &nx,
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  args (3) = octave_value (par);
  f = feval ("${sys}_smxax", args, 1);
  return f(0).${vector_value} ();
#endif
}

EOF
    ;;
    "dassl")
cat <<EOF >> $filename
inline ColumnVector
mtt_dassl (ColumnVector &x,
	   const ColumnVector &u,
	   const double &t,
	   const ColumnVector &par,
	   const ColumnVector &dx,
	   const double &ddt,
	   const int &nx,
	   const int &nyz,
	   const ColumnVector &open_switches)
{
#ifdef STANDALONE
   return Fmtt_dassl (x, u, t, par, dx, ddt, nx, nyz, open_switches);
#else
   static octave_value_list args, f;
    args (0) = octave_value (x);
    args (1) = octave_value (u);
    args (2) = octave_value (t);
    args (3) = octave_value (par);
    args (4) = octave_value (dx);
    args (5) = octave_value (ddt);
    args (6) = octave_value (static_cast<double> (nx));
    args (7) = octave_value (static_cast<double> (nyz));
    args (8) = octave_value (open_switches);
    f = feval ("mtt_dassl", args, 1);
    return f(0).${vector_value} ();
#endif
}
fi
	   
EOF
    ;;
    "euler" | "rk4" | *)
cat <<EOF >> $filename
inline ColumnVector
mtt_euler (ColumnVector &x,
	   const ColumnVector &dx,
	   const double &ddt,
	   const int &nx,
	   const ColumnVector &open_switches)
{
#ifdef STANDALONE
  return Fmtt_euler (x, dx, ddt, nx, open_switches);
#else
  static octave_value_list args, f;
  args (0) = octave_value (x);
  args (1) = octave_value (dx);
  args (2) = octave_value (ddt);
  args (3) = octave_value ((double)nx);
  args (4) = octave_value (open_switches);
  f = feval ("mtt_euler", args, 1);
  return f(0).${vector_value} ();
#endif
}

EOF
    ;;
esac
cat <<EOF >> $filename

inline void
mtt_write (const double &t,
	   ColumnVector &x,
	   ColumnVector &y,
	   const int &nrows,
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      u	= mtt_input (x, y, t, par);
      y	= mtt_output (x, u, t, par);
      if (0 == j)
	{
           mtt_write (t, x, y, nrows);
	}
EOF
if [ "$method" = "rk4" ]; then
cat << EOF >> $filename
case "$method" in
    "rk4")
	cat << EOF >> $filename
      {
        static ColumnVector
          k1 (MTTNX,0.0),
          k2 (MTTNX,0.0),
          k3 (MTTNX,0.0),
          k4 (MTTNX,0.0);
︙
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        k1 = ddt * mtt_rate (x , u, t , par); x1 += k1 * 0.5;
        k2 = ddt * mtt_rate (x1, u, t1, par); x2 += k2 * 0.5;
        k3 = ddt * mtt_rate (x2, u, t1, par); x3 += k3;
        k4 = ddt * mtt_rate (x3, u, t2, par);
        dx = (k1 + 2.0 * (k2 + k3) + k4) / (6.0 * ddt);
      }
EOF
    ;;
else
cat << EOF >> $filename
    "dassl")
    ;;
    "implicit")
	cat << EOF >> $filename
      dx = mtt_rate (x, u, t, par);
EOF
fi

if [ "$method" = "implicit" ]; then
cat <<EOF >> $filename

      AA = mtt_smxa (x, u, ddt, par);
      AAx = mtt_smxax (x, u, ddt, par);
EOF
    ;;
    "euler" | *)
fi
	cat << EOF >> $filename
      dx = mtt_rate (x, u, t, par);
EOF
    ;;
esac

## Common stuff
cat <<EOF >> $filename
      open_switches = mtt_logic (x, u, t, par);
      x =  $algorithm; 
      t += ddt;
      j++;
︙
MTT: Model Transformation Tools
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