Name
sp_cgs — Use a Cholesky decomposition to solve the system A.x = b
Calling Sequence
[xsol] = sp_chsolve(A,b])
Parameters
- A
- the A real sparse matrix of the system to be solved. 
- b
- the b real vector of the system to be solved. 
- xsol
- the solution vector of the system. 
Description
Solve the system A.x = b via a Cholesky decomposition
    (solve L.L'.x = b)