void MultiVectorMatrix::TransMultVectorImpl(Number alpha, const Vector &x,
Number beta, Vector &y) const
{
// A few sanity checks
DBG_ASSERT(NCols()==y.Dim());
DBG_ASSERT(NRows()==x.Dim());
// See if we can understand the data
DenseVector* dense_y = static_cast<DenseVector*>(&y);
DBG_ASSERT(dynamic_cast<DenseVector*>(&y));
// Use the individual dot products to get the matrix (transpose)
// vector product
Number *yvals=dense_y->Values();
if ( beta!=0.0 ) {
for (Index i=0; i<NCols(); i++) {
yvals[i] = alpha*ConstVec(i)->Dot(x) + beta*yvals[i];
}
}
else {
for (Index i=0; i<NCols(); i++) {
yvals[i] = alpha*ConstVec(i)->Dot(x);
}
}
}
void MultiVectorMatrix::MultVectorImpl(Number alpha, const Vector &x,
Number beta, Vector &y) const
{
// A few sanity checks
DBG_ASSERT(NCols()==x.Dim());
DBG_ASSERT(NRows()==y.Dim());
// Take care of the y part of the addition
if ( beta!=0.0 ) {
y.Scal(beta);
}
else {
y.Set(0.0); // In case y hasn't been initialized yet
}
// See if we can understand the data
const DenseVector* dense_x = static_cast<const DenseVector*>(&x);
DBG_ASSERT(dynamic_cast<const DenseVector*>(&x));
// We simply add all the Vectors one after the other
if (dense_x->IsHomogeneous()) {
Number val = dense_x->Scalar();
for (Index i=0; i<NCols(); i++) {
y.AddOneVector(alpha*val, *ConstVec(i), 1.);
}
}
else {
const Number* values = dense_x->Values();
for (Index i=0; i<NCols(); i++) {
y.AddOneVector(alpha*values[i], *ConstVec(i), 1.);
}
}
}
void MultiVectorMatrix::PrintImpl(const Journalist& jnlst,
EJournalLevel level,
EJournalCategory category,
const std::string& name,
Index indent,
const std::string& prefix) const
{
jnlst.Printf(level, category, "\n");
jnlst.PrintfIndented(level, category, indent,
"%sMultiVectorMatrix \"%s\" with %d columns:\n",
prefix.c_str(), name.c_str(), NCols());
for (Index i=0; i<NCols(); i++) {
if (ConstVec(i)) {
DBG_ASSERT(name.size()<200);
char buffer[256];
Snprintf(buffer, 255, "%s[%2d]", name.c_str(), i);
std::string term_name = buffer;
ConstVec(i)->Print(&jnlst, level, category, term_name,
indent+1, prefix);
}
else {
jnlst.PrintfIndented(level, category, indent,
"%sVector in column %d is not yet set!\n",
prefix.c_str(), i);
}
}
}
void MultiVectorMatrix::LRMultVector(Number alpha, const Vector &x,
Number beta, Vector &y) const
{
DBG_START_METH("MultiVectorMatrix::LRMultVector(",
dbg_verbosity);
DBG_ASSERT(NRows()==x.Dim());
DBG_ASSERT(NRows()==y.Dim());
DBG_PRINT((1, "alpha = %e beta = %e\n", alpha, beta));
DBG_PRINT_VECTOR(2, "x", x);
if ( beta!=0.0 ) {
y.Scal(beta);
}
else {
y.Set(0.0);
}
DBG_PRINT_VECTOR(2, "beta*y", y);
for (Index i=0; i<NCols(); i++) {
DBG_PRINT_VECTOR(2, "ConstVec(i)", *ConstVec(i));
y.AddOneVector(alpha*ConstVec(i)->Dot(x), *ConstVec(i), 1.);
DBG_PRINT_VECTOR(2, "y mid", y);
}
}
bool MultiVectorMatrix::HasValidNumbersImpl() const
{
for (Index i=0; i<NCols(); i++) {
if (!ConstVec(i)->HasValidNumbers()) {
return false;
}
}
return true;
}
/** Get a Vector in a particular column as a const Vector */
inline SmartPtr<const Vector> GetVector(Index i) const
{
return ConstVec(i);
}
