Routines to calculate the minimax coefficients for approximating 1/x as 1/x ~ 1/pi SUM_{i}^{K} w_i x^2/(x^2+a_i^2)^2 for x belonging to [1:Rc]. More...

Functions/Subroutines
subroutine, public	get_rpa_minimax_coeff (k, e_range, aw, ierr, print_warning)
	The a_i and w_i coefficient are stored in aw such that the first 1:K elements correspond to a_i and the K+1:2k correspond to w_i. All a_i and w_i have been fitted with a 12th order polynomial as a function of Rc for each value of K.

subroutine, public	get_rpa_minimax_coeff_larger_grid (k, e_range, aw)
	...

Detailed Description

Routines to calculate the minimax coefficients for approximating 1/x as 1/x ~ 1/pi SUM_{i}^{K} w_i x^2/(x^2+a_i^2)^2 for x belonging to [1:Rc].

History: 06.2014 created [Mauro Del Ben]

Function/Subroutine Documentation

◆ get_rpa_minimax_coeff()

subroutine, public minimax_rpa::get_rpa_minimax_coeff	(	integer	k,
		real(kind=dp)	e_range,
		real(kind=dp), dimension(:), allocatable	aw,
		integer	ierr,
		logical, optional	print_warning
	)

The a_i and w_i coefficient are stored in aw such that the first 1:K elements correspond to a_i and the K+1:2k correspond to w_i. All a_i and w_i have been fitted with a 12th order polynomial as a function of Rc for each value of K.

Parameters

k	...
E_range	...
aw	...
ierr	...
print_warning	...

Author: Mauro Del Ben

Definition at line 40 of file minimax_rpa.F.

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◆ get_rpa_minimax_coeff_larger_grid()

subroutine, public minimax_rpa::get_rpa_minimax_coeff_larger_grid	(	integer, intent(in)	k,
		real(kind=dp), intent(inout)	e_range,
		real(kind=dp), dimension(:), intent(out)	aw
	)

...