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Stokhos_RysBasis.hpp
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41
42#ifndef STOKHOS_RYSBASIS_HPP
43#define STOKHOS_RYSBASIS_HPP
44
46
47namespace Stokhos {
48
50
64 template <typename ordinal_type, typename value_type>
65 class RysBasis :
66 public DiscretizedStieltjesBasis<ordinal_type, value_type> {
67 public:
68
70
75 RysBasis(ordinal_type p, value_type c, bool normalize,
77 DiscretizedStieltjesBasis<ordinal_type,value_type>(
78 "Rys", p, rysWeight, -c, c, normalize, growth) {}
79
82
84 static value_type rysWeight(const value_type& x) {
85 return std::exp(-x*x/2.0);
86 }
87
98 virtual Teuchos::RCP<OneDOrthogPolyBasis<ordinal_type,value_type> > cloneWithOrder(ordinal_type p) const
99 { return Teuchos::rcp(new RysBasis<ordinal_type,value_type>(p,*this)); }
100
101 protected:
102
104 RysBasis(ordinal_type p, const RysBasis& basis) :
105 DiscretizedStieltjesBasis<ordinal_type,value_type>(p, basis) {}
106
107 private:
108
109 // Prohibit copying
111
112 // Prohibit Assignment
114
115 }; // class RysBasis
116
117} // Namespace Stokhos
118
119#endif
Generates three-term recurrence using the Discretized Stieltjes procedure.
GrowthPolicy growth
Smolyak growth policy.
ordinal_type p
Order of basis.
Rys polynomial basis.
RysBasis(const RysBasis &)
RysBasis(ordinal_type p, const RysBasis &basis)
Copy constructor with specified order.
virtual Teuchos::RCP< OneDOrthogPolyBasis< ordinal_type, value_type > > cloneWithOrder(ordinal_type p) const
Clone this object with the option of building a higher order basis.
static value_type rysWeight(const value_type &x)
The Rys weight function.
RysBasis(ordinal_type p, value_type c, bool normalize, GrowthPolicy growth=SLOW_GROWTH)
Constructor.
RysBasis & operator=(const RysBasis &b)
Top-level namespace for Stokhos classes and functions.
GrowthPolicy
Enumerated type for determining Smolyak growth policies.