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function cs_demo3 (do_pause, matrixpath)
%CS_DEMO3 MATLAB version of the CSparse/Demo/cs_demo3.c program.
% Cholesky update/downdate.
%
% Example:
% cs_demo3
% See also: cs_demo
% Copyright 2006-2012, Timothy A. Davis, http://www.suitesparse.com
if (nargin < 2)
matrixpath = [] ;
end
if (isempty (matrixpath))
try
% older versions of MATLAB do not have an input argument to mfilename
p = mfilename ('fullpath') ;
t = strfind (p, '/') ;
matrixpath = [ p(1:t(end)) '../../Matrix' ] ;
catch
% assume we are in the C*Sparse/MATLAB/CSparse/Demo directory
matrixpath = '../../Matrix' ;
end
end
matrices = { 'HB/bcsstk01', 'HB/bcsstk16' } ;
if (nargin < 1)
do_pause = 1 ;
end
for i = 1:length(matrices)
name = matrices {i} ;
[C sym] = get_problem (matrixpath, name, 1e-14) ;
demo3 (C, sym, name) ;
if (do_pause)
input ('Hit enter to continue: ') ;
end
end
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