dps_control_type structure

    struct dps_control_type{T}
      f_indexing::Bool
      error::Int32
      out::Int32
      problem::Int32
      print_level::Int32
      new_h::Int32
      taylor_max_degree::Int32
      eigen_min::T
      lower::T
      upper::T
      stop_normal::T
      stop_absolute_normal::T
      goldfarb::Bool
      space_critical::Bool
      deallocate_error_fatal::Bool
      problem_file::NTuple{31,Cchar}
      symmetric_linear_solver::NTuple{31,Cchar}
      prefix::NTuple{31,Cchar}
      sls_control::sls_control_type{T}

detailed documentation

control derived type as a Julia structure

components

Bool f_indexing

use C or Fortran sparse matrix indexing

Int32 error

unit for error messages

Int32 out

unit for monitor output

Int32 problem

unit to write problem data into file problem_file

Int32 print_level

controls level of diagnostic output

Int32 new_h

how much of \(H\) has changed since the previous call. Possible values are

• 0 unchanged

• 1 values but not indices have changed

• 2 values and indices have changed

Int32 taylor_max_degree

maximum degree of Taylor approximant allowed

T eigen_min

smallest allowable value of an eigenvalue of the block diagonal factor of \(H\)

T lower

lower and upper bounds on the multiplier, if known

T upper

see lower

T stop_normal

stop trust-region solution when \(| ||x||_M - \delta | \leq\) max( .stop_normal \* delta, .stop_absolute_normal )

T stop_absolute_normal

see stop_normal

Bool goldfarb

use the Goldfarb variant of the trust-region/regularization norm rather than the modified absolute-value version

Bool space_critical

if space is critical, ensure allocated arrays are no bigger than needed

Bool deallocate_error_fatal

exit if any deallocation fails

char problem_file[31]

name of file into which to write problem data

char symmetric_linear_solver[31]

symmetric (indefinite) linear equation solver

NTuple{31,Cchar} prefix

all output lines will be prefixed by prefix(2:LEN(TRIM(.prefix))-1) where prefix contains the required string enclosed in quotes, e.g. “string” or ‘string’

struct sls_control_type sls_control

control parameters for the Cholesky factorization and solution