#!/usr/bin/bash

MATLAB="/usr/local/bin/octave -q"

if [ -z "${2}" -o -z "${1}" ]; then
	echo
	echo "Usage:"
	echo
	echo " `basename ${0}` m n"
	echo
	echo " m  is the total number of bits for the vector"
	echo " n  is the number of vectors to generate"
	echo
	echo " Vectors will be stored in powrmill.vec"
	echo
	echo " `basename ${0}` 5 200  will generate 200 vectors of 5 bits."
	exit 127
fi

# save current terminal width
saveterm="$(stty size | awk '{ print $2 }')"

# temporarily set terminal width, so vectors display properly
# 1000 columns handles vectors at most 333 bits wide.
stty cols 1000

# generate the top portions of the vector file
cat << EOF > powrmill.vec
; PowerMill stimulus file

; input vector configuration
; the cycle time for each vector (in ns):
period 20

; rise and fall times (in ns):
rise .1
fall .1

;;;;;; vectors start here ;;;;;;
EOF

echo "Generating vectors.  Be patient, this could take a few minutes."

# generate the vectors

${MATLAB} << EOF >> powrmill.vec

% from randint.m
function b = randint (n, m, range, seed)

  switch (nargin)
    case 1,
      m = n;
      range = [0,1];
      seed = Inf;
    case 2,
      range = [0,1];
      seed = Inf;
    case 3,
      seed = Inf;      
  end

  if (length (range) == 1)
    range = [0, range-1];
  elseif ( prod (size (range)) != 2)
    error ("randint: range must be a 2 element vector");
  endif
  range = sort (range);

  if (!isinf (seed))
    old_seed = rand ("seed");
    rand ("seed", seed);
  endif

  b = range (1) - 1 + ceil (rand (n, m) * (range (2) - range (1) + 1));
  
  if (!isinf (seed))
    rand ("seed", old_seed);
  endif

endfunction

for i=1:${2}
  disp(randint(1,${1}));
end
EOF

# restore terminal settings
stty cols $saveterm