function mat siz matrix generator
Found at: ftp.icm.edu.pl:70/packages/netlib/templates/matlab/matgen.m
function mat = testmat( siz );
%
% matrix generator function for templates tester
%
if ( siz == 10 ),
mat = makefish( 4 ); % poisson matrix
elseif ( siz == 20 ),
mat = wathen( 3, 3, 0 ); % spd consistent mass matrix
elseif ( siz == 30 ),
mat = wathen( 3, 3, 1 ); % spd consistent mass matrix
elseif ( siz == 40 ),
mat = lehmer(5);
elseif ( siz == 50 ),
mat = lehmer(10);
else
mat = makefish( 4 ); % irrelevant: x0 = exact solution
end
.