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/* tests/test-permutation.C
* bds
* adapted from test-diagonal by Bradford Hovinen <hovinen@cis.udel.edu>
*
* Time-stamp: <01 Dec 15 18:50:35 Jean-Guillaume.Dumas@imag.fr>
* --------------------------------------------------------
*
*
* ========LICENCE========
* This file is part of the library LinBox.
*
* LinBox is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* ========LICENCE========
*
*/
/*! @file tests/test-diagonal.C
* @ingroup tests
* @brief no doc
* @test NO DOC
*/
#include "linbox/linbox-config.h"
#include <cstdio>
#include "linbox/blackbox/permutation.h"
#include "linbox/blackbox/transpose.h"
#include "linbox/util/commentator.h"
#include "linbox/ring/modular.h"
#include "linbox/vector/stream.h"
#include "test-common.h"
#include "test-generic.h"
using namespace LinBox;
// Test 1: PP^T should = I.
template <class Blackbox>
static bool testInvEqTrans (Blackbox & P)
{
typedef typename Blackbox::Field Field;
const Field & F = P.field();
typedef BlasVector<Field> Vector;
Transpose<Blackbox> PT(P);
typename Field::RandIter gen(F);
RandomDenseStream<Field, Vector> stream1 (F, gen, P.rowdim(), 3);
commentator().start ("Testing PP^T = I", "testInvEqTrans", stream1.m ());
Vector u(F), v(F), w(F);
VectorWrapper::ensureDim (u, stream1.n ());
VectorWrapper::ensureDim (v, stream1.n ());
VectorWrapper::ensureDim (w, stream1.n ());
stream1.next (u);
PT.apply(v, u);
P.apply(w, v);
VectorDomain<Field> VD (F);
bool pass = VD.areEqual(w, u);
if (! pass || (pass && P.rowdim() <= 20)) {
ostream &report = commentator().report (Commentator::LEVEL_IMPORTANT, INTERNAL_DESCRIPTION);
VD.write (report << "u = ", u) << endl;
//PT.write(report << "PT = ") << endl; //transpose has no write!
VD.write (report << "v = P^Tu = ", v) << endl;
P.write(report << "P = ") << endl;
VD.write (report << "w = Pv = ", w) << endl;
}
commentator().stop (MSG_STATUS (pass), (const char *) 0, "testInvEqTrans");
return pass;
}
int main (int argc, char **argv)
{
bool pass = true;
static size_t n = 10;
static integer q = 65521U;
static Argument args[] = {
{ 'n', "-n N", "Set dimension of test matrices to NxN.", TYPE_INT, &n },
{ 'q', "-q Q", "Operate over the \"field\" GF(Q) [1].", TYPE_INTEGER, &q },
END_OF_ARGUMENTS
};
typedef Givaro::Modular<uint32_t> Field;
parseArguments (argc, argv, args);
Field F (q);
srand ((unsigned)time (NULL));
commentator().start("Permutation matrix black box test suite", "permutation");
// Make sure some more detailed messages get printed
commentator().getMessageClass (INTERNAL_DESCRIPTION).setMaxDepth (3);
commentator().getMessageClass (INTERNAL_DESCRIPTION).setMaxDetailLevel (Commentator::LEVEL_UNIMPORTANT);
LinBox::Permutation<Field> P(F,n);
P.random();
pass = pass && testBlackboxNoRW(P);
pass = pass && testInvEqTrans(P);
commentator().stop (MSG_STATUS (pass));
return pass ? 0 : -1;
}
// Local Variables:
// mode: C++
// tab-width: 4
// indent-tabs-mode: nil
// c-basic-offset: 4
// End:
// vim:sts=4:sw=4:ts=4:et:sr:cino=>s,f0,{0,g0,(0,\:0,t0,+0,=s
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