Finite-difference divergence operator for two vector components. More...

#include "oakfield/operator_split.h"
#include <stdbool.h>
#include <stddef.h>

Include dependency graph for divergence.h:

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Classes
struct	SimDivergenceOperatorConfig
	Configuration for a finite-difference vector divergence operator. More...

Macros
#define	SIM_DIVERGENCE_AXIS_AUTO ((size_t)SIZE_MAX)

Typedefs
typedef enum SimDivergenceStencil	SimDivergenceStencil
	Finite-difference stencils available for divergence derivatives.

typedef struct SimDivergenceOperatorConfig	SimDivergenceOperatorConfig
	Configuration for a finite-difference vector divergence operator.

Enumerations
enum	SimDivergenceStencil { SIM_DIVERGENCE_STENCIL_CENTRAL_2 = 0 , SIM_DIVERGENCE_STENCIL_CENTRAL_4 , SIM_DIVERGENCE_STENCIL_FORWARD_1 , SIM_DIVERGENCE_STENCIL_BACKWARD_1 , SIM_DIVERGENCE_STENCIL_FORWARD_2 , SIM_DIVERGENCE_STENCIL_BACKWARD_2 }
	Finite-difference stencils available for divergence derivatives. More...

Functions
SimResult	sim_add_divergence_operator (struct SimContext context, const SimDivergenceOperatorConfig config, size_t *out_index)
	Register a finite-difference divergence operator.

SimResult	sim_divergence_config (struct SimContext context, size_t operator_index, SimDivergenceOperatorConfig out_config)
	Copy the current divergence configuration from a registered operator.

SimResult	sim_divergence_update (struct SimContext context, size_t operator_index, const SimDivergenceOperatorConfig config)
	Replace the configuration of a registered divergence operator.

Detailed Description

Finite-difference divergence operator for two vector components.

Enumeration Type Documentation

Finite-difference stencils available for divergence derivatives.

Enumerator
SIM_DIVERGENCE_STENCIL_CENTRAL_2	Second-order central difference.
SIM_DIVERGENCE_STENCIL_CENTRAL_4	Fourth-order central difference.
SIM_DIVERGENCE_STENCIL_FORWARD_1	First-order forward difference.
SIM_DIVERGENCE_STENCIL_BACKWARD_1	First-order backward difference.
SIM_DIVERGENCE_STENCIL_FORWARD_2	Second-order forward difference.
SIM_DIVERGENCE_STENCIL_BACKWARD_2	Second-order backward difference.

SimResult sim_add_divergence_operator	(	struct SimContext *	context,
		const SimDivergenceOperatorConfig *	config,
		size_t *	out_index
	)

Register a finite-difference divergence operator.

Parameters

	context	Simulation context that will own the operator.
	config	Optional divergence configuration; NULL selects normalized defaults.
[out]	out_index	Optional destination for the registered operator index.

Returns: SIM_RESULT_OK on success, or an error code from argument validation, field compatibility checks, allocation, or split registration.

SimResult sim_divergence_config	(	struct SimContext *	context,
		size_t	operator_index,
		SimDivergenceOperatorConfig *	out_config
	)

Copy the current divergence configuration from a registered operator.

Parameters

	context	Simulation context containing the operator.
	operator_index	Index returned by sim_add_divergence_operator().
[out]	out_config	Receives the normalized configuration.

Returns: SIM_RESULT_OK on success, SIM_RESULT_INVALID_ARGUMENT for NULL pointers, SIM_RESULT_NOT_FOUND for a missing operator, or SIM_RESULT_INVALID_STATE when the operator has no divergence state.

SimResult sim_divergence_update	(	struct SimContext *	context,
		size_t	operator_index,
		const SimDivergenceOperatorConfig *	config
	)

Replace the configuration of a registered divergence operator.

config is required. The replacement is normalized and field compatibility is checked before storing it.

Parameters

context	Simulation context containing the operator.
operator_index	Index of the divergence operator to update.
config	Replacement divergence configuration.

Returns: SIM_RESULT_OK on success, or an error code from argument validation, lookup, state validation, or field compatibility checks.