Ylmgen Class Reference

#include <ylmgen.h>

Collaboration diagram for Ylmgen:

List of all members.

Public Member Functions

Ylmgen (int l_max, int m_max, double epsilon=1e-30)

void get_Ylm (double cth, double sth, int m, arr< double > &result, int &firstl)

Detailed Description

Class for efficient calculation of Y_lm(theta,phi=0)

Definition at line 42 of file ylmgen.h.

Constructor & Destructor Documentation

Ylmgen::Ylmgen	(	int	l_max,
		int	m_max,
		double	epsilon = `1e-30`
	)			`[inline]`

Creates a generator which will calculate Y_lm(theta,phi=0) up to l=l_max and m=m_max. It may regard Y_lm whose absolute magnitude is smaller than epsilon as zero.

Definition at line 75 of file ylmgen.h.

Member Function Documentation

void Ylmgen::get_Ylm	(	double	cth,
		double	sth,
		int	m,
		arr< double > &	result,
		int &	firstl
	)			`[inline]`

For a colatitude given by cth and sth (representing cos(theta) and sin(theta)) and a multipole moment m, calculate the Y_lm(theta,phi=0) for m<=l<=lmax and return in it result[l]. On exit, firstl is the l index of the first Y_lm with an absolute magnitude larger than epsilon. If firstl>lmax, all absolute values are smaller than epsilon. result[l] is undefined for all l<firstl.

Definition at line 105 of file ylmgen.h.

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

ylmgen.h