Subroutine mld_precbld

mld_precbld(a,desc_a,p,info)

This routine builds the preconditioner according to the requirements made by the user through the routines mld_precinit and mld_precset.

Arguments

a	type(psb_xspmat_type), intent(in).
	The sparse matrix structure containing the local part of the matrix to be preconditioned. Note that x must be chosen according to the real/complex, single/double precision version of MLD2P4 under use. See the PSBLAS User's Guide for details [14].
desc_a	type(psb_desc_type), intent(in).
	The communication descriptor of a. See the PSBLAS User's Guide for details [14].
p	type(mld_xprec_type), intent(inout).
	The preconditioner data structure. Note that x must be chosen according to the real/complex, single/double precision version of MLD2P4 under use.
info	integer, intent(out).
	Error code. If no error, 0 is returned. See Section 7 for details.