vmec_utilities Module Reference

Numerical utilities related to the output of VMEC. More...

Interfaces and Types
interface	fourier2real
	Inverse Fourier transformation, from VMEC. More...

Functions/Subroutines
integer function, public	calc_trigon_factors (theta, zeta, trigon_factors)
	Calculate the trigonometric cosine and sine factors. More...

Variables
logical, public	debug_calc_trigon_factors = .false.
	plot debug information for calc_trigon_factors() More...

Detailed Description

Numerical utilities related to the output of VMEC.

Function/Subroutine Documentation

calc_trigon_factors()

integer function, public vmec_utilities::calc_trigon_factors	(	real(dp), dimension(:,:,:), intent(in)	theta,
		real(dp), dimension(:,:,:), intent(in)	zeta,
		real(dp), dimension(:,:,:,:,:), intent(inout), allocatable	trigon_factors
	)

Calculate the trigonometric cosine and sine factors.

This is done on a grid (1:mnmax_V) at given 3D arrays for the (VMEC) E(quilibrium) angles \(\theta_\text{E}\) and \(\zeta_\text{E}\).

The dimensions of the output array are

(1:mnmax_V,1:n_ang_1,1:n_ang_2,1:n_r,1:2)

where mnmax_V is the number of modes in VMEC n_r is the total number of normal points.

See also

See grid_vars.grid_type for a discussion on ang_1 and ang_2.

Returns

ierr

Parameters

[in]	theta	poloidal angles in equilibrium coords.
[in]	zeta	toroidal angles in equilibrium coords.
[in,out]	trigon_factors	trigonometric factor cosine and sine at these angles

Definition at line 275 of file VMEC_utilities.f90.

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Variable Documentation

debug_calc_trigon_factors

logical, public vmec_utilities::debug_calc_trigon_factors = .false.

plot debug information for calc_trigon_factors()

Note

Debug version only

Definition at line 22 of file VMEC_utilities.f90.