Hi everyone,
I don't know if this is asked before since I cannot see the archives.I need to 
use the bicstabL() method, but I could not figure out how to call it:
ptrdiff_t bicgstabL(const int L, const size_t n, realnum *x, bicgstab_op A, 
void *Adata,                              const realnum *b, const double tol,   
                         int *iters, // input *iters = max iters, output = 
actual iters                            realnum *work, // if you pass 
work=NULL, bicgstab returns nwork                            const bool quiet);
Could you please show me an example of its usage and explain the required 
parameters.Also is it possible to provide any preconditioners to this method 
like ILU or Jacobi? 
Thanks.

 
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