sbls_inform_type structure

    struct sbls_inform_type{T}
      status::Int32
      alloc_status::Int32
      bad_alloc::NTuple{81,Cchar}
      sort_status::Int32
      factorization_integer::Int64
      factorization_real::Int64
      preconditioner::Int32
      factorization::Int32
      d_plus::Int32
      rank::Int32
      rank_def::Bool
      perturbed::Bool
      iter_pcg::Int32
      norm_residual::T
      alternative::Bool
      time::sbls_time_type{T}
      sls_inform::sls_inform_type{T}
      uls_inform::uls_inform_type{T}

detailed documentation

inform derived type as a Julia structure

components

Int32 status

return status. See SBLS_form_and_factorize for details

Int32 alloc_status

the status of the last attempted allocation/deallocation

NTuple{81,Cchar} bad_alloc

the name of the array for which an allocation/deallocation error occurred

Int32 sort_status

the return status from the sorting routines

Int64 factorization_integer

the total integer workspace required for the factorization

Int64 factorization_real

the total real workspace required for the factorization

Int32 preconditioner

the preconditioner used

Int32 factorization

the factorization used

Int32 d_plus

how many of the diagonals in the factorization are positive

Int32 rank

the computed rank of \(A\)

Bool rank_def

is the matrix A rank defficient?

Bool perturbed

has the used preconditioner been perturbed to guarantee correct inertia?

Int32 iter_pcg

the total number of projected CG iterations required

T norm_residual

the norm of the residual

Bool alternative

has an “alternative” \(y\) : \(K y = 0\) and \(y^T c > 0\) been found when trying to solve \(K y = c\) for generic \(K\)?

struct sbls_time_type time

timings (see above)

struct sls_inform_type sls_inform

inform parameters from the GALAHAD package SLS used

struct uls_inform_type uls_inform

inform parameters from the GALAHAD package ULS used