.TH BSctx_set_pre 3 "10/17/1996" " " "BlockSolve95"
.SH NAME
BSctx_set_pre \- The preconditioner to be used by the iterative
solver.

.SH INPUT PARAMETERS
.PD 0
.TP
.B context 
- The context to change
.PD 1
.PD 0
.TP
.B pre 
- The desired preconditioner
.PD 1
.br
  The preconditioner choices are:
.br
    PRE_DIAG - diagonal preconditioning
.br
    PRE_ICC - incomplete Cholesky
.br
    PRE_ILU - incomplete LU
.br
    PRE_SSOR - SSOR
.br
    PRE_BJACOBI - block Jacobi

.SH RETURNS
void

.SH NOTES
Must agree with the preconitioner that has been computed!
If PRE_ICC is selected, BSset_mat_icc_storage() must be set
to TRUE before BSmain_perm().  If PRE_ILU is selected,
BSset_mat_icc_storage() must be set to FALSE.

.SH SYNOPSIS
.nf
void BSctx_set_pre(BSprocinfo *context, int pre)

.fi

.SH LOCATION
 BlockSolve95/src/BScontext.c