GaussKronrod< Functor > Class Template Reference

Numerical integrator. More...

#include <gausskronrod.h>

Inheritance diagram for GaussKronrod< Functor >:

Collaboration diagram for GaussKronrod< Functor >:

Public Member Functions
	GaussKronrod (Functor f, size_t limit=1000)
	~GaussKronrod ()
double	operator() (double x) const
	Evaluate the function. More...
bool	integrate (double a, double b)
	Compute the integral. More...
bool	ok () const
double	result () const
double	error () const
std::string const &	status () const
void	setEpsAbs (double epsabs)
void	setEpsRel (double epsrel)
double	epsabs () const
double	epsrel () const

Static Public Member Functions
static double	eval (double x, void *ptr_radf)
	Evaluates radial function supplied in a pointer. More...

Detailed Description

template<typename Functor>
class GaussKronrod< Functor >

The class is initialized by a lambda-function (= the integrand) and serves as a QuadPack wrapper. The member function integrate performs the actual integration. The getters result and abserr return the computed numbers.

For the initialization you will mostly want to use the structure

*     GaussKronrod<decltype(integrand)> Q(integrand);
* 

Constructor & Destructor Documentation

template<typename Functor>

GaussKronrod< Functor >::GaussKronrod ( Functor  f, size_t  limit = 1000  )

inline

template<typename Functor>

GaussKronrod< Functor >::~GaussKronrod ( )

inline

Member Function Documentation

template<typename Functor>

double GaussKronrod< Functor >::epsabs ( ) const

inline

template<typename Functor>

double GaussKronrod< Functor >::epsrel ( ) const

inline

template<typename Functor>

double GaussKronrod< Functor >::error ( ) const

inline

template<typename Functor>

static double GaussKronrod< Functor >::eval ( double  x, void *  ptr_radf  )

inlinestatic

This function serves as a workaround for impossibility of passing pointer-to-member to the GSL routines.

template<typename Functor>

bool GaussKronrod< Functor >::integrate ( double  a, double  b  )

inline

Performs the integration on a given interval. Uses specialized routines from GSL (that is, in this case, nothing than C-port of QuadPack).

You can compute improper integrals. For specifying "infinity" as one or both bounds use either

std::numeric_limits<double>::infinity()

for positive infinity or

-std::numeric_limits<double>::infinity()

for negative infinity.

Returns

The value of "Ok" (i.e. whether the last integration has been successful according to the library).

template<typename Functor>

bool GaussKronrod< Functor >::ok ( ) const

inline

template<typename Functor>

double GaussKronrod< Functor >::operator() ( double  x ) const

inlinevirtual

Implements RadialFunction< double >.

template<typename Functor>

double GaussKronrod< Functor >::result ( ) const

inline

template<typename Functor>

void GaussKronrod< Functor >::setEpsAbs ( double  epsabs )

inline

template<typename Functor>

void GaussKronrod< Functor >::setEpsRel ( double  epsrel )

inline

template<typename Functor>

std::string const& GaussKronrod< Functor >::status ( ) const

inline

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The documentation for this class was generated from the following file:

• src/gausskronrod.h