/usr/include/trilinos/Sacado_ETPCE_OrthogPolyImp.hpp is in libtrilinos-stokhos-dev 12.12.1-5.
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// ***********************************************************************
//
// Stokhos Package
// Copyright (2009) Sandia Corporation
//
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// contributors may be used to endorse or promote products derived from
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// @HEADER
#include "Sacado_DynamicArrayTraits.hpp"
#include "Teuchos_TimeMonitor.hpp"
#include "Stokhos_ConstantOrthogPolyExpansion.hpp"
namespace Sacado {
namespace ETPCE {
template <int NN, typename ExprT>
struct ExprQuadFuncWrapper {
static const int N = NN;
typedef typename ExprT::value_type value_type;
const ExprT& expr_;
ExprQuadFuncWrapper(const ExprT& expr) : expr_(expr) {}
template <typename tuple_type>
KERNEL_PREFIX value_type operator() (tuple_type x) const {
return expr_.template eval_sample<0>(x);
}
};
template <typename T, typename Storage>
template <typename S>
void
OrthogPolyImpl<T,Storage>::
expressionCopy(const Expr<S>& x)
{
#ifdef STOKHOS_TEUCHOS_TIME_MONITOR
TEUCHOS_FUNC_TIME_MONITOR("ETPCE ExpressionCopy(" << x.name() << ")");
#endif
int p = x.order();
if (p == 0) {
(*th_)[0] = x.val();
}
else if (p <= 2) {
int sz = th_->size();
approx_type* tc = th_.get();
bool on_rhs = false;
// Check if *this is on the right-hand-side of the expression
if (p == 2) {
const int N = Expr<S>::num_args;
for (int i=0; i<N; i++) {
const approx_type* opa = &(x.getArg(i));
if (opa == &(*th_)) {
on_rhs = true;
break;
}
}
}
// If we are on the RHS, we have to put the results in a temporary
if (on_rhs)
tc = new approx_type(expansion_->getBasis(), sz);
(*tc)[0] = x.val();
if (x.has_fast_access(sz)) {
for (int i=1; i<sz; i++)
(*tc)[i] = x.fast_higher_order_coeff(i);
}
else {
for (int i=1; i<sz; i++)
(*tc)[i] = x.higher_order_coeff(i);
}
// Set underlying OPA if we created a temporary
if (on_rhs) {
th_ = Sacado::Handle<approx_type>(tc);
}
}
else {
const int N = Expr<S>::num_args;
const approx_type* opas[N];
for (int i=0; i<N; i++)
opas[i] = &(x.getArg(i));
ExprQuadFuncWrapper< N, Expr<S> > func(x);
quad_expansion_->nary_op(func, *th_, opas);
}
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>::
OrthogPolyImpl() :
expansion_(const_expansion_),
quad_expansion_(),
th_(new Stokhos::OrthogPolyApprox<int,value_type,Storage>)
{
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>::
OrthogPolyImpl(const typename OrthogPolyImpl<T,Storage>::value_type& x) :
expansion_(const_expansion_),
quad_expansion_(),
th_(new Stokhos::OrthogPolyApprox<int,value_type,Storage>(Teuchos::null, 1, &x))
{
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>::
OrthogPolyImpl(const Teuchos::RCP<expansion_type>& expansion) :
expansion_(expansion),
quad_expansion_(Teuchos::rcp_dynamic_cast<quad_expansion_type>(expansion_)),
th_(new Stokhos::OrthogPolyApprox<int,value_type,Storage>(expansion_->getBasis()))
{
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>::
OrthogPolyImpl(const Teuchos::RCP<expansion_type>& expansion,
ordinal_type sz) :
expansion_(expansion),
quad_expansion_(Teuchos::rcp_dynamic_cast<quad_expansion_type>(expansion_)),
th_(new Stokhos::OrthogPolyApprox<int,value_type,Storage>(expansion_->getBasis(), sz))
{
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>::
OrthogPolyImpl(const OrthogPolyImpl<T,Storage>& x) :
expansion_(x.expansion_),
quad_expansion_(x.quad_expansion_),
th_(x.th_)
{
}
template <typename T, typename Storage>
template <typename S>
OrthogPolyImpl<T,Storage>::
OrthogPolyImpl(const Expr<S>& x) :
expansion_(x.expansion()),
quad_expansion_(Teuchos::rcp_dynamic_cast<quad_expansion_type>(expansion_)),
th_(new Stokhos::OrthogPolyApprox<int,value_type,Storage>(expansion_->getBasis(), x.size()))
{
expressionCopy(x);
}
template <typename T, typename Storage>
void
OrthogPolyImpl<T,Storage>::
reset(const Teuchos::RCP<expansion_type>& expansion)
{
expansion_ = expansion;
quad_expansion_ = Teuchos::rcp_dynamic_cast<quad_expansion_type>(expansion_);
th_->reset(expansion_->getBasis());
}
template <typename T, typename Storage>
void
OrthogPolyImpl<T,Storage>::
reset(const Teuchos::RCP<expansion_type>& expansion, ordinal_type sz)
{
expansion_ = expansion;
quad_expansion_ = Teuchos::rcp_dynamic_cast<quad_expansion_type>(expansion_);
th_->reset(expansion_->getBasis(), sz);
}
template <typename T, typename Storage>
typename OrthogPolyImpl<T,Storage>::value_type
OrthogPolyImpl<T,Storage>::
evaluate(const Teuchos::Array<typename OrthogPolyImpl<T,Storage>::value_type>& point) const
{
return th_->evaluate(point);
}
template <typename T, typename Storage>
typename OrthogPolyImpl<T,Storage>::value_type
OrthogPolyImpl<T,Storage>::
evaluate(
const Teuchos::Array<typename OrthogPolyImpl<T,Storage>::value_type>& point,
const Teuchos::Array<typename OrthogPolyImpl<T,Storage>::value_type>& bvals) const
{
return th_->evaluate(point, bvals);
}
template <typename T, typename Storage>
template <typename S>
bool
OrthogPolyImpl<T,Storage>::
isEqualTo(const Expr<S>& x) const {
typedef IsEqual<value_type> IE;
if (x.size() != this->size()) return false;
// Allow expansions to be different if their size is 1 and one
// of them is a constant expansion
if (expansion_ != x.expansion_) {
if (x.size() != 1)
return false;
if ((expansion_ != const_expansion_) &&
(x.expansion_ != const_expansion_))
return false;
}
bool eq = true;
for (int i=0; i<this->size(); i++)
eq = eq && IE::eval(x.coeff(i), this->coeff(i));
return eq;
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>&
OrthogPolyImpl<T,Storage>::
operator=(const typename OrthogPolyImpl<T,Storage>::value_type& v)
{
th_.makeOwnCopy();
*th_ = v;
return *this;
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>&
OrthogPolyImpl<T,Storage>::
operator=(const OrthogPolyImpl<T,Storage>& x)
{
expansion_ = x.expansion_;
quad_expansion_ = x.quad_expansion_;
th_ = x.th_;
return *this;
}
template <typename T, typename Storage>
template <typename S>
OrthogPolyImpl<T,Storage>&
OrthogPolyImpl<T,Storage>::
operator=(const Expr<S>& x)
{
th_.makeOwnCopy();
expansion_ = x.expansion();
quad_expansion_ = Teuchos::rcp_dynamic_cast<quad_expansion_type>(expansion_);
th_->reset(expansion_->getBasis(), x.size());
expressionCopy(x);
return *this;
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>&
OrthogPolyImpl<T,Storage>::
operator+=(const typename OrthogPolyImpl<T,Storage>::value_type& v)
{
th_.makeOwnCopy();
expansion_->plusEqual(*th_, v);
return *this;
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>&
OrthogPolyImpl<T,Storage>::
operator-=(const typename OrthogPolyImpl<T,Storage>::value_type& v)
{
th_.makeOwnCopy();
expansion_->minusEqual(*th_, v);
return *this;
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>&
OrthogPolyImpl<T,Storage>::
operator*=(const typename OrthogPolyImpl<T,Storage>::value_type& v)
{
th_.makeOwnCopy();
expansion_->timesEqual(*th_, v);
return *this;
}
template <typename T, typename Storage>
OrthogPolyImpl<T,Storage>&
OrthogPolyImpl<T,Storage>::
operator/=(const typename OrthogPolyImpl<T,Storage>::value_type& v)
{
th_.makeOwnCopy();
expansion_->divideEqual(*th_, v);
return *this;
}
template <typename T, typename Storage>
std::ostream&
operator << (std::ostream& os, const OrthogPoly<T,Storage>& a)
{
typedef typename OrthogPoly<T,Storage>::ordinal_type ordinal_type;
os << "[ ";
for (ordinal_type i=0; i<a.size(); i++) {
os << a.coeff(i) << " ";
}
os << "]\n";
return os;
}
template <typename T, typename Storage>
std::istream&
operator >> (std::istream& is, OrthogPoly<T,Storage>& a)
{
typedef typename OrthogPoly<T,Storage>::ordinal_type ordinal_type;
// Read in the opening "["
char bracket;
is >> bracket;
for (ordinal_type i=0; i<a.size(); i++) {
is >> a.fastAccessCoeff(i);
}
// Read in the closing "]"
is >> bracket;
return is;
}
} // namespace PCE
} // namespace Sacado
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