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AMPL Toolbox >> AMPL Toolbox > ampl_get_size

ampl_get_size

return the size of a given AMPL problem

Calling Sequence

info = ampl_get_size(asl)

Parameters

asl

a structure which handles the pointer to the problem

info

a list of dimensions related to the AMPL problem

The list of available fields is:

  • info('nbv') no. of linear binary variables

  • info('niv') no. of linear integer variables

  • info('nlc') total no. of nonlinear constraints

  • info('n_eqn') number of equality constraints or -1 if unknown (ampl prior to 19970627)

  • info('n_cc') total complementarity conditions

  • info('nlcc') nonlinear complementarity conditions

  • info('nlnc') no. of nonlinear network constraints

  • info('nlo') no. of nonlinear objectives

  • info('nlvb') no. of nonlinear variables in both constraints and objectives

  • info('nlvc') no. of nonlinear variables in constraints

  • info('nlvo') no. of nonlinear variables in objectives 'nlvc' and 'nlvo' include 'nlvb'

  • info('nlvbi') integer nonlinear variables in both constraints and objectives

  • info('nlvci') integer nonlinear vars just in constraints

  • info('nlvoi') integer nonlinear vars just in objectives

  • info('nwv') no. of (linear) network variables (arcs)

  • info('nzc') no. of nonzeros in constraints Jacobian

  • info('nzo') no. of nonzeros in all objective gradients

  • info('n_var') total no. of variables

  • info('n_con') total no. of constraints

  • info('n_obj') total no. of objectives

  • info('n_lcon') no. of logical constraints

Description

Return the size of a given AMPL problem.

Examples

[asl, x0, bl, bu, v, cl, cu] = ampl_init('demos/data/ASL/ch03.nl');

info = ampl_get_size(asl);

printf('number of linear binary variables:     %d\n',info('nbv'));
printf('number of linear integer variables:    %d\n',info('niv'));
printf('total number of nonlinear constraints: %d\n',info('nlc'));
printf('number of equality constraints or -1 if unknown (ampl prior to 19970627) : %d\n',info('n_eqn'));
printf('total complementarity conditions:        %d\n',info('n_cc'));
printf('nonlinear complementarity conditions:    %d\n',info('nlcc'));
printf('number of nonlinear network constraints: %d\n',info('nlnc'));
printf('number of nonlinear objectives:          %d\n',info('nlo'));
printf('number of nonlinear variables in both constraints and objectives: %d\n',info('nlvb'));
printf('number of nonlinear variables in constraints:                     %d\n',info('nlvc'));
printf('number of nonlinear variables in objectives nlvc and nlvo include nlvb: %d\n',info('nlvo')); 
printf('integer nonlinear variables in both constraints and objectives :        %d\n',info('nlvbi'));
printf('integer nonlinear vars just in constraints :    %d\n',info('nlvci'));
printf('integer nonlinear vars just in objectives:      %d\n',info('nlvoi'));
printf('number of (linear) network variables (arcs):    %d\n',info('nwv'));
printf('number of nonzeros in constraints Jacobian:     %d\n',info('nzc'));
printf('number of nonzeros in all objective gradients : %d\n',info('nzo'));
printf('total number of variables:     %d\n',info('n_var'));
printf('total number of constraints:   %d\n',info('n_con'));
printf('total number of objectives:    %d\n',info('n_obj'));
printf('number of logical constraints: %d\n',info('n_lcon'));

ampl_free(asl); // free the memory

See Also

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