occ::mults::SFunctionEvaluator Class Reference

S-function evaluator with batch evaluation support. More...

#include <sfunction_evaluator.h>

Public Member Functions
	SFunctionEvaluator (int max_rank=4)
void	set_coordinates (const Vec3 &ra, const Vec3 &rb)
	Set coordinate system for subsequent evaluations.
void	set_coordinate_system (const CoordinateSystem &coords)
	Set coordinate system directly (for body-frame S-functions)
SFunctionResult	compute (int t1, int t2, int j, int deriv_level=0)
	Compute single S-function.
std::vector< SFunctionResult >	compute_batch (const SFunctionTermList &term_list, int deriv_level=0)
	Batch evaluate S-functions from term list.
const CoordinateSystem &	coordinates () const
double	r () const
int	max_rank () const

Static Public Member Functions
static std::pair< int, int >	index_to_lm (int index)
static int	lm_to_index (int l, int m)

Detailed Description

S-function evaluator with batch evaluation support.

Wraps existing S-function logic and adds:

• Batch evaluation for multiple terms
• Coordinate system caching
• Binomial coefficient caching

Constructor & Destructor Documentation

SFunctionEvaluator()

occ::mults::SFunctionEvaluator::SFunctionEvaluator ( int  max_rank = 4 )

explicit

Member Function Documentation

compute()

SFunctionResult occ::mults::SFunctionEvaluator::compute	(	int	t1,
		int	t2,
		int	j,
		int	deriv_level = 0
	)

Compute single S-function.

Parameters

t1	Multipole index for site A
t2	Multipole index for site B
j	Combined rank parameter
deriv_level	Derivative level (0=value only, 1=first derivs)

Returns

S-function result

compute_batch()

std::vector< SFunctionResult > occ::mults::SFunctionEvaluator::compute_batch	(	const SFunctionTermList &	term_list,
		int	deriv_level = 0
	)

Batch evaluate S-functions from term list.

Parameters

term_list	Pre-filtered list of terms
deriv_level	Derivative level

Returns

Vector of results (same size and order as term_list.terms)

coordinates()

const CoordinateSystem & occ::mults::SFunctionEvaluator::coordinates ( ) const

inline

index_to_lm()

static std::pair< int, int > occ::mults::SFunctionEvaluator::index_to_lm ( int  index )

static

lm_to_index()

static int occ::mults::SFunctionEvaluator::lm_to_index ( int  l, int  m  )

static

max_rank()

int occ::mults::SFunctionEvaluator::max_rank ( ) const

inline

r()

double occ::mults::SFunctionEvaluator::r ( ) const

inline

set_coordinate_system()

void occ::mults::SFunctionEvaluator::set_coordinate_system

(

const CoordinateSystem &

coords

)

Set coordinate system directly (for body-frame S-functions)

Parameters

coords

Pre-computed coordinate system with body-frame unit vectors

set_coordinates()

void occ::mults::SFunctionEvaluator::set_coordinates	(	const Vec3 &	ra,
		const Vec3 &	rb
	)

Set coordinate system for subsequent evaluations.

Parameters

ra	Position of site A
rb	Position of site B

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

• /home/runner/work/occ/occ/include/occ/mults/sfunction_evaluator.h