Accumulators

Accumulator API for reductions. More...

Data Structures
struct	accum_t
	Opaque type for accumulators. More...
struct	accumed_t
	Accumed clause. User-level data-structure to represent an accumulator clause. More...

Enumerations
enum	accum_op_t {   ACCUM_OP_NONE, ACCUM_OP_PLUS, ACCUM_OP_PROD, ACCUM_OP_MIN,   ACCUM_OP_MAX, ACCUM_OP_LAND, ACCUM_OP_BAND, ACCUM_OP_LOR,   ACCUM_OP_BOR, ACCUM_OP_LXOR, ACCUM_OP_BXOR }
	Runtime-supported accumulator operations.
enum	accum_mode_t { ACCUM_MODE_SEQ, ACCUM_MODE_LAZY, ACCUM_MODE_REC }
	Accumulators' reduction modes. To specify the accumulation strategy an accumulator is backed by.

Functions
void	accum_register (accum_t **accs, int n)
	Register a list of accumulators in the current finish scope. More...
accum_t *	accum_create_int (accum_op_t op, accum_mode_t mode, int init)
	Allocate and initialize an 'int' accumulator. More...
int	accum_get_int (accum_t *acc)
	Get the value of an accumulator. More...
void	accum_put_int (accum_t *acc, int v)
	Contribute a value to an accumulator. More...
accum_t *	accum_create_double (accum_op_t op, accum_mode_t mode, double init)
	Allocate and initialize a 'double' accumulator. More...
double	accum_get_double (accum_t *acc)
	Get the value of an accumulator. More...
void	accum_put_double (accum_t *acc, double v)
	Contribute a value to an accumulator. More...
void	accum_destroy (accum_t *acc)
	Destroy an accumulator. More...

Detailed Description

Accumulator API for reductions.

Function Documentation

accum_t* accum_create_double	(	accum_op_t	op,
		accum_mode_t	mode,
		double	init
	)

Allocate and initialize a 'double' accumulator.

Parameters

[in]	op	Operation to apply on reduction
[in]	mode	Accumulator backend implementation
[in]	init	Initial value of the accumulator

Returns

A contiguous array of DDFs

Definition at line 853 of file accumulator.c.

accum_t* accum_create_int	(	accum_op_t	op,
		accum_mode_t	mode,
		int	init
	)

Allocate and initialize an 'int' accumulator.

Parameters

[in]	op	Operation to apply on reduction
[in]	mode	Accumulator backend implementation
[in]	init	Initial value of the accumulator

Returns

A contiguous array of DDFs

Definition at line 619 of file accumulator.c.

void accum_destroy

(

accum_t *

acc

)

Destroy an accumulator.

Parameters

[in]

acc

The accumulator to destroy

Definition at line 987 of file accumulator.c.

double accum_get_double

(

accum_t *

acc

)

Get the value of an accumulator.

Parameters

[in]

acc

The accumulator to get the value from

Returns

Current accumulator's value

Definition at line 963 of file accumulator.c.

int accum_get_int

(

accum_t *

acc

)

Get the value of an accumulator.

Parameters

[in]

acc

The accumulator to get the value from

Returns

Current accumulator's value

Definition at line 933 of file accumulator.c.

void accum_put_double	(	accum_t *	acc,
		double	v
	)

Contribute a value to an accumulator.

Parameters

[in]	acc	The accumulator to put a value
[in]	v	The value to accumulate

Definition at line 968 of file accumulator.c.

void accum_put_int	(	accum_t *	acc,
		int	v
	)

Contribute a value to an accumulator.

Parameters

[in]	acc	The accumulator to put a value
[in]	v	The value to accumulate

Definition at line 938 of file accumulator.c.

void accum_register	(	accum_t **	accs,
		int	n
	)

Register a list of accumulators in the current finish scope.

Parameters

[in]	accs	The accumulator list to register
[in]	v	The size of the list Warning/Limitation: this overwrites currently registered accum

Definition at line 973 of file accumulator.c.