File mttroot/mtt/bin/trans/make_ode2odes artifact 2110f1bce1 part of check-in 08b3d9299e

#! /bin/sh

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

###############################################################
## Version control history
###############################################################
## $Id$
## $Log$
## Revision 1.8  1998/08/11 13:28:03  peterg
## Lowercase mttLAST etc
##
## Revision 1.7  1998/07/30 11:29:54  peterg
## Added implicit integration stuff
##
## Revision 1.6  1998/07/30 10:44:37  peterg
## INcluded othe integration methods.
##
## Revision 1.5  1998/07/26 11:02:20  peterg
## Put mtt or MTT  in front of variable names to avoid clashes with
## globals
##
## Revision 1.4  1998/07/25 20:14:00  peterg
## update code added for flexibility and octave efficiency
##
###############################################################


# Bourne shell script: make_ode2odes

# Copyright (c) P.J.Gawthrop July 1998.

# Tell user
echo  Creating $1_ode2odes.m

Sys=$1

# Find system constants
Nx=`grep "MTTNx " <$Sys\_def.r | awk '{print $3}' | sed 's/;//'`
Nu=`grep "MTTNu " <$Sys\_def.r | awk '{print $3}' | sed 's/;//'`
Ny=`grep "MTTNy " <$Sys\_def.r | awk '{print $3}' | sed 's/;//'`
 

cat << EOF > $1_ode2odes.m
# Program $1_ode2odes
EOF

# Do the globals
sympar2global_txt2m $1 >> $1_ode2odes.m

# The rest of the program
cat << EOF >> $1_ode2odes.m

$1_simpar;			# Read in simulation parameters
$1_numpar;			# Read in parameters
MTTilast = round(mttlast/mttdt);         # Total number of steps

#Initialise
MTTt = 0.0;
[MTTx] = $1_state;	        # Read in initial state
[MTTu] = $1_input(MTTx,MTTt);        # Evaluate initial input
[MTTy] = $1_odeo(MTTx,MTTu,MTTt);    # Evaluate initial output
mtt_write(MTTt,MTTx,MTTy,$Nx,$Ny); # And write them

[mttAA]  = zero_matrix($Nx); # Zero the A matrix
[mttAAx] = zero_vector($Nx); # Zero the AAx vector

if mttmethod==1 #Euler
  mttsteps = mttstepfactor;
endif;

if mttmethod>1 #everything else
  mttsteps = 1;
end;


mttddt = mttdt/mttsteps; # The small sample interval

if mttmethod==2 #Linear implicit
  mttAA = $1_smx(MTTx,MTTu,mttdt); # Set up AA= I-Adt matrix - linearised system
end;

#Integration loop
for MTTit = 1:MTTilast
  if mttmethod==3 # nonlinear implicit
    [mttAA] = $1_smx(MTTx,MTTu,mttdt); # Set up AA=I-A*dt  matrix - linearised system
  end;
  if mttmethod>1 # nonlinear implicit
    [mttAAx] = $1_smxx(MTTx,MTTu,MTTx,mttdt); # Set up AAx = AA*x vector - linearised system
  end;

  [MTTu] = $1_input(MTTx,MTTt);# Input
  [MTTx] = $1_switch(MTTx); # Switches

  for MTTjt = 1:mttsteps
    [MTTdx] = $1_ode(MTTx,MTTu,MTTt); # State derivative
    [MTTx] = mtt_update(MTTdx,MTTx,mttAAx,mttAA,mttdt,mttstepfactor,$Nx,mttmethod);
    MTTt = MTTt + mttddt;
  end;

  [MTTy] = $1_odeo(MTTx,MTTu,MTTt);
  mtt_write(MTTt,MTTx,MTTy,$Nx,$Ny);
end;

EOF