integration_data Class Reference

#include <integrand.h>

Public Member Functions
	integration_data (const std::vector< GiNaC::ex > &list_feynman_parameter, GiNaC::ex epsilon, int order)

Public Attributes
size_t	n
	the number of Feynman parameters
std::vector< GiNaC::ex >	list_feynman_parameter
	a vector holding the Feynman parameters as GiNaC::symbol
GiNaC::ex	epsilon
	the symbol of the expansion parameter
int	order
	order of the term in the Laurent series, which should be calculated

Friends
std::ostream &	operator<< (std::ostream &os, const integration_data &arg)

Detailed Description

The class integration_data contains the data which will not be modified by the algorithm for the sector decomposition. The data members are:

• n gives the number of Feynman parameters.
• list_feynman_parameter is a list of the Feynman parameters. It contains symbols.
• epsilon contains the symbol of the expansion parameter.
• order gives the value at which we truncate the Laurent expansion.

Constructor & Destructor Documentation

integration_data()

integration_data	(	const std::vector< GiNaC::ex > &	arg_list_feynman_parameter,
		GiNaC::ex	arg_epsilon,
		int	arg_order
	)

Constructor.

The arguments are: arg_list_feynman_parameter is a vector containing the Feynman parameters as GiNaC::symbol, arg_epsilon is the expansion parameter, again of type GiNaC::symbol, arg_order defines term in the Laurent series, which should be calculated.

Friends And Related Function Documentation

operator<<

std::ostream & operator<< ( std::ostream &  os, const integration_data &  arg  )

friend

Output. Prints out the Feynman parameters, the expansion parameter and the order.

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

• integrand.h
• integrand.cc