bicgstab.cpp  
	The example to use bicgstab algorithm and SSOR preconditioner
gmres.cpp
	The example to use GMRES algorithm and SSOR preconditioner
ilu.cpp
	The example to use QMR algorithm and ILU preconditioner
gmres1.cpp
	The example to use GMRES algorithm with classical Gram-Schimdt 
        and SSOR preconditioner
iccg.cpp
	The example to use CG algorithm and Incomplete Cholesky
ilut.cpp
	The example to use QMR algorithm and ILUT(n) preconditioner
tfqmr.cpp 
	The example to use TFQMR algorithm and ILU preconditioner
