Description

$if set DEMOSIZE    $set N 149
$if set GLOBALSIZE  $set N 6

set default N based on license and type of solver

Small Model of Type : QCP

Category : GAMS Test library

Main file : qcp04.gms

$TITLE Test modsolstat & solution correctness - multiple QCons (QCP04,SEQ=87)

$if not set DEMOSIZE      $set DEMOSIZE   0
$if not set GLOBALSIZE    $set GLOBALSIZE 0
$if not %DEMOSIZE% == 0   $set DEMOSIZE   1
$if not %GLOBALSIZE% == 0 $set GLOBALSIZE 1

* $if set DEMOSIZE    $set N 149
* $if set GLOBALSIZE  $set N 6

* set default N based on license and type of solver
$if %DEMOSIZE%%GLOBALSIZE% == 00 $set NN 450
$if %DEMOSIZE%%GLOBALSIZE% == 01 $set NN   6
$if %DEMOSIZE%%GLOBALSIZE% == 10 $set NN 149
$if %DEMOSIZE%%GLOBALSIZE% == 11 $set NN   2

$if not set N       $set N %NN%
$if not set MTYPE   $set MTYPE qcp
$if not set TESTTOL $set TESTTOL 1e-6
scalar mchecks / 0 /;
$if not set QCPMCHECKS $goto qpmchecks
$if not %QCPMCHECKS% == 0 mchecks = 1;
$goto donemcheck
$label qpmchecks
$if not  %QPMCHECKS% == 0 mchecks = 1;
$label donemcheck

$eolcom //

set i /1*%N%/;
variables x(i), y(i), z;
parameter xp(i), yp(i);

xp(i) = uniform(0,1);
yp(i) = uniform(0,1);
* set some inactive bounds to keep the global solvers happy
x.lo(i) = -1.1;  x.up(i) = 1.1;
y.lo(i) = -1.1;  y.up(i) = 1.1;

equation defc, defz;

defc(i).. sqr(x(i)) + sqr(y(i)) =L= 1;
defz..    z =E= sum(i,xp(i)*x(i) + yp(i)*y(i));

model m /all/;
m.limrow=0; m.limcol=0;m.solprint=%SOLPRINT.Summary%;
solve m min z using %MTYPE%;

scalars
    vtol    /    1e-8 /,
    tol     /    %TESTTOL% /,
    objval;
parameters
    dLdx(i)  'dLangrangian/dx',
    dLdy(i)  'dLangrangian/dy',
    defc_l(i);

* capability problems is an OK return
if {(m.solvestat = %solvestat.CapabilityProblems%),
  abort$(m.modelstat <> %modelstat.NoSolutionReturned%)           'wrong modelstat for capability error';
  display 'Solver capability error: further tests suppressed';
else
  // should we consider checking for reslim or iterlim?
  abort$(m.solvestat <> %solvestat.NormalCompletion% or (m.modelstat > %modelstat.LocallyOptimal% and m.modelstat <> %modelstat.FeasibleSolution%)) 'wrong status codes';

  objval = sum(i,xp(i)*x.l(i) + yp(i)*y.l(i));
  dLdx(i) = xp(i) - defc.m(i) * 2 * x.l(i);
  dLdy(i) = yp(i) - defc.m(i) * 2 * y.l(i);
  defc_l(i) = sqr(x.l(i)) + sqr(y.l(i));

  abort$(abs(z.l-objval) > tol)                       'bad z.l';
  abort$(abs(defz.l) > tol)                           'bad defz.l';

  abort$(smax{i,defc_l(i) - 1} > tol)                 'bad defc';
  abort$(smax{i,abs(defc.l(i)-defc_l(i))} > tol)      'bad defc.l';

  if {mchecks,
    abort$(abs(z.m) > tol)                            'bad z.m';
    abort$(abs(defz.m-1) > tol)                       'bad defz.m';
    abort$(smax{i,defc.m(i)} > tol)                   'bad defc.m';
    abort$(smax{i,abs(dLdx(i))} > tol)                'bad dLdx';
    abort$(smax{i,abs(dLdy(i))} > tol)                'bad dLdy';
  };

  display 'All tests passed';
};