function S=time2sec(t)
%TIME2SEC  Converts the time in seconds.
%
%       S = TIME2SEC(TIME)
%
%       TIME can be a string in the format 'hh:mm:ss'
%            or a vector of 3 elements [hh mm ss].
%       Return the number of seconds.
%
%       See also: SEC2TIME TIME CLOCK TIC TOC ETIME
%
%       Claudio  7 June 1995.
%
%

%
% Copyright (c) 1995 by Claudio Rivetti and Mark Young
% claudio@alice.uoregon.edu,    mark@alice.uoregon.edu
%


if nargin < 1
  error('Not enough input arguments.');
end
if nargin > 1
  error('Too many input arguments.');
end

if isstr(t)
  if length(t) ~=8  |  t(3)~=':'  |  t(6)~=':'
    error('Input string must be in the format hh:mm:ss');
  end
else
  if length(t) ~= 3
    error('Input vector must contein 3 elements [hh, mm, ss]');
  end
end


if isstr(t)
  h=str2num(t(1:2));
  m=str2num(t(4:5));
  s=str2num(t(7:8));
else
  h=t(1);
  m=t(2);
  s=t(3);
end

S = s + m*60 + h*3600;

return