bool testRandom(const Ring& R,
const SmithForm& SF,
LinBox::VectorStream<Vector>& stream1)
{
std::ostringstream str;
str << "Testing Smith Form binary(EGV++):";
commentator().start (str.str ().c_str (), "testSmithform");//, stream1.m ());
bool ret = true;
bool iter_passed = true;
LinBox::VectorDomain<Ring> VD (R);
Vector d, x;
VectorWrapper::ensureDim (d, stream1.n ());
VectorWrapper::ensureDim (x, stream1.n ());
int n = (int)d. size();
while (stream1) {
commentator().startIteration ((unsigned)stream1.j ());
std::ostream &report = commentator().report (Commentator::LEVEL_IMPORTANT, INTERNAL_DESCRIPTION);
iter_passed = true;
stream1.next (d);
report << "Input vector: ";
VD.write (report, d);
report << endl;
BlasMatrix<Ring> D(R, n, n), L(R, n, n), U(R, n, n), A(R,n,n);
int i, j;
for(i = 0; i < n; ++i) {
R. assign (D[i][i], d[i]);
R. init (L[i][i], 1);
R. init (U[i][i], 1);}
for (i = 0; i < n; ++ i)
for (j = 0; j < i; ++ j) {
R.init(L[i][j], rand() % 10);
R.init(U[j][i], rand() % 10);
}
std::vector<typename Ring::Element> tmp1(n), tmp2(n), e(n);
typename BlasMatrix<Ring>::ColIterator col_p;
i = 0;
for (col_p = A.colBegin();
col_p != A.colEnd(); ++ col_p, ++ i) {
R.init(e[i],1);
U.apply(tmp1, e);
D.apply(tmp2, tmp1);
L.apply(*col_p, tmp2);
R.init(e[i],0);
}
SF.smithFormBinary (x, A);
report << "Computed Smith form: \n";
VD. write (report, x);
report << '\n';
typename std::vector<typename Ring::Element>::iterator p1, p2;
typename Ring::Element g;
for (p1 = d.begin(); p1 != d.end(); ++ p1) {
for ( p2 = p1 + 1; p2 != d.end(); ++ p2) {
if (R. isUnit(*p1)) break;
else if (R. isZero (*p2)) continue;
else if (R. isZero (*p1)) {
std::swap (*p1, *p2);
}
else {
R. gcd (g, *p1, *p2);
R. divin (*p2, g);
R. mulin (*p2, *p1);
R. assign (*p1, g);
}
}
}
report << "Expected smith form:\n";
VD.write (report, d);
report << '\n';
if (!VD.areEqual (d, x))
ret = iter_passed = false;
if (!iter_passed)
commentator().report (Commentator::LEVEL_IMPORTANT, INTERNAL_ERROR)
<< "ERROR: Computed Smith form is incorrect" << endl;
commentator().stop ("done");
commentator().progress ();
}
//stream1.reset ();
commentator().stop (MSG_STATUS (ret), (const char *) 0, "testSmithform");
return ret;
}
bool testRandom(const Ring& R,
LinBox::VectorStream<Vector>& stream1)
{
std::ostringstream str;
str << "Testing the smithForm function in solutions directory:\n";
commentator().start (str.str ().c_str (), "testRandom");//, stream1.m ());
bool ret = true;
LinBox::VectorDomain<Ring> VD (R);
Vector d(R), x(R);
LinBox::VectorWrapper::ensureDim (d, stream1.n ());
LinBox::VectorWrapper::ensureDim (x, stream1.n ());
int n = (int)d. size();
while (stream1) {
commentator().startIteration ((unsigned)stream1.j ());
std::ostream &report = commentator().report (Commentator::LEVEL_IMPORTANT, INTERNAL_DESCRIPTION);
bool iter_passed = true;
stream1.next (d);
report << "Input vector: ";
VD.write (report, d);
report << endl;
BlasMatrix<Ring> D(R, (size_t)n, (size_t)n), L(R, (size_t)n, (size_t)n), U(R, (size_t)n, (size_t)n), A(R,(size_t)n,(size_t)n);
int i, j;
for(i = 0; i < n; ++i) {
R. assign (D[(size_t)i][(size_t)i], d[(size_t)i]);
R. assign(L[(size_t)i][(size_t)i], R.one);
R. assign(U[(size_t)i][(size_t)i], R.one);}
for (i = 0; i < n; ++ i)
for (j = 0; j < i; ++ j) {
R.init(L[(size_t)i][(size_t)j], rand() % 10);
R.init(U[(size_t)j][(size_t)i], rand() % 10);
}
BlasVector<Ring> tmp1(R,(size_t)n), tmp2(R,(size_t)n), e(R,(size_t)n);
typename BlasMatrix<Ring>::ColIterator col_p;
i = 0;
for (col_p = A.colBegin();
col_p != A.colEnd(); ++ col_p, ++ i) {
R.assign(e[(size_t)i],R.one);
U.apply(tmp1, e);
D.apply(tmp2, tmp1);
// LinBox::BlasSubvector<BlasVector<Ring> > col_p_v (R, *col_p);
// L.apply(col_p_v, tmp2);
L.apply(*col_p, tmp2); //! @internal @bug should use Triangular apply ? We are doing this many times, factor somewhere in test-utils.h ? why not some ftrtr routine for that ?
R.assign(e[(size_t)i],R.zero);
}
typename Vector::iterator x_p;
Givaro::ZRing<Integer> Z;
BlasVector<Givaro::ZRing<Integer> > xi(Z,A. rowdim());
BlasVector<Givaro::ZRing<Integer> >::iterator xi_p;
std::list<std::pair<Integer, size_t> > cpt;
smithForm (cpt, A);
std::list<std::pair<Integer, size_t> >::iterator cpt_p;
xi_p = xi. begin();
for (cpt_p = cpt.begin(); cpt_p != cpt.end(); ++ cpt_p) {
for (size_t ii = 0; ii < cpt_p -> second; ++ ii, ++ xi_p)
*xi_p = cpt_p -> first;
}
for (x_p = x. begin(), xi_p = xi. begin(); x_p != x. end(); ++ x_p, ++ xi_p)
A. field (). init (*x_p, *xi_p);
report << "Computed Smith form: \n";
VD. write (report, x);
report << '\n';
typename BlasVector<Ring>::iterator p1, p2;
typename Ring::Element g;
for (p1 = d.begin(); p1 != d.end(); ++ p1) {
for ( p2 = p1 + 1; p2 != d.end(); ++ p2) {
if (R. isUnit(*p1)) break;
else if (R. isZero (*p2)) continue;
else if (R. isZero (*p1)) std::swap (*p1, *p2);
else { // (*p1, *p2) <-- (g, *p1 * *p2 / g), where g = gcd(*p1, *p2)
R. gcd (g, *p1, *p2);
R. divin (*p2, g);
R. mulin (*p2, *p1);
R. assign (*p1, g);
}
}
}
report << "Expected smith form:\n";
VD.write (report, d) << endl;
if (!VD.areEqual (d, x))
ret = iter_passed = false;
if (!iter_passed)
commentator().report (Commentator::LEVEL_IMPORTANT, INTERNAL_ERROR)
<< "ERROR: Computed Smith form is incorrect" << endl;
commentator().stop ("done");
commentator().progress ();
}
//stream1.reset ();
commentator().stop (MSG_STATUS (ret), (const char *) 0, "testRandom");
return ret;
}
