l2rt_inform_type structure

#include <galahad_l2rt.h>

struct l2rt_inform_type {
    // fields

    ipc_ status;
    ipc_ alloc_status;
    char bad_alloc[81];
    ipc_ iter;
    ipc_ iter_pass2;
    ipc_ biters;
    ipc_ biter_min;
    ipc_ biter_max;
    rpc_ obj;
    rpc_ multiplier;
    rpc_ x_norm;
    rpc_ r_norm;
    rpc_ Atr_norm;
    rpc_ biter_mean;
};

detailed documentation

inform derived type as a C struct

components

ipc_ status

return status. See l2rt_solve_problem for details

ipc_ alloc_status

the status of the last attempted allocation/deallocation

char bad_alloc[81]

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

ipc_ iter

the total number of iterations required

ipc_ iter_pass2

the total number of pass-2 iterations required

ipc_ biters

the total number of inner iterations performed

ipc_ biter_min

the smallest number of inner iterations performed during an outer iteration

ipc_ biter_max

the largest number of inner iterations performed during an outer iteration

rpc_ obj

the value of the objective function

rpc_ multiplier

the multiplier, \(\lambda = \mu + \sigma \|x\|^{p-2} * \sqrt{\|Ax-b\|^2 + \mu \|x\|^2}\)

rpc_ x_norm

the Euclidean norm of \(x\)

rpc_ r_norm

the Euclidean norm of \(Ax-b\)

rpc_ Atr_norm

the Euclidean norm of \(A^T (Ax-b) + \lambda x\)

rpc_ biter_mean

the average number of inner iterations performed during an outer iteration