connection_generator_fixed_pre.h File Reference

Fixed-Number-Pre (fan-in) Connection generator implementation. More...

#include <log.h>
#include <synapse_expander/rng.h>
#include <stdbool.h>

Go to the source code of this file.

Data Structures
struct	fixed_pre_params
	The parameters that can be copied from SDRAM. More...
struct	fixed_pre
	The data to be passed around. More...

Functions
static uint32_t	pre_random_in_range (rng_t *rng, uint32_t range)
	Generates a uniformly-distributed random number.
static void *	connection_generator_fixed_pre_initialise (void **region)
	Initialise the fixed-pre connection generator.
void	connection_generator_fixed_pre_free (void *generator)
	Free the fixed-pre connection generator.
bool	connection_generator_fixed_pre_generate (void *generator, uint32_t pre_lo, uint32_t pre_hi, uint32_t post_lo, uint32_t post_hi, uint32_t post_index, uint32_t post_slice_start, uint32_t post_slice_count, unsigned long accum weight_scale, accum timestep_per_delay, param_generator_t weight_generator, param_generator_t delay_generator, matrix_generator_t matrix_generator)
	Generate connections with the fixed-pre connection generator.

Detailed Description

Fixed-Number-Pre (fan-in) Connection generator implementation.

Each post-neuron is connected to exactly n pre-neurons (chosen at random).

Definition in file connection_generator_fixed_pre.h.

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Data Structure Documentation

fixed_pre_params

struct fixed_pre_params

The parameters that can be copied from SDRAM.

Definition at line 29 of file connection_generator_fixed_pre.h.

Data Fields
uint32_t	allow_self_connections
uint32_t	with_replacement
uint32_t	n_pre

fixed_pre

struct fixed_pre

The data to be passed around.

Definition at line 38 of file connection_generator_fixed_pre.h.

Data Fields
struct fixed_pre_params	params

Function Documentation

pre_random_in_range()

static uint32_t pre_random_in_range ( rng_t *  rng, uint32_t  range  )

static

Generates a uniformly-distributed random number.

Parameters

[in]	rng	the RNG to generate with
[in]	range	the (upper, exclusive) limit of the range of random numbers that may be generated. Should be in range 0..65536

Returns

a random integer in the given input range.

Definition at line 49 of file connection_generator_fixed_pre.h.

connection_generator_fixed_pre_initialise()

static void * connection_generator_fixed_pre_initialise ( void **  region )

static

Initialise the fixed-pre connection generator.

Parameters

[in,out]

region

Region to read parameters from. Should be updated to position just after parameters after calling.

Returns

A data item to be passed in to other functions later on

Definition at line 60 of file connection_generator_fixed_pre.h.

connection_generator_fixed_pre_free()

void connection_generator_fixed_pre_free

(

void *

generator

)

Free the fixed-pre connection generator.

Parameters

[in]

generator

The generator to free

Definition at line 82 of file connection_generator_fixed_pre.h.

connection_generator_fixed_pre_generate()

bool connection_generator_fixed_pre_generate	(	void *	generator,
		uint32_t	pre_lo,
		uint32_t	pre_hi,
		uint32_t	post_lo,
		uint32_t	post_hi,
		uint32_t	post_index,
		uint32_t	post_slice_start,
		uint32_t	post_slice_count,
		unsigned long accum	weight_scale,
		accum	timestep_per_delay,
		param_generator_t	weight_generator,
		param_generator_t	delay_generator,
		matrix_generator_t	matrix_generator
	)

Generate connections with the fixed-pre connection generator.

Parameters

[in]	generator	The generator to use to generate connections
[in]	pre_slice_start	The start of the slice of the pre-population being generated
[in]	pre_slice_count	The number of neurons in the slice of the pre-population being generated
[in]	pre_neuron_index	The index of the neuron in the pre-population being generated
[in]	post_slice_start	The start of the slice of the post-population being generated
[in]	post_slice_count	The number of neurons in the slice of the post-population being generated
[in]	max_row_length	The maximum number of connections to generate
[in,out]	indices	An array into which the core-relative post-indices should be placed. This will be initialised to be max_row_length in size

Returns

The number of connections generated

Definition at line 105 of file connection_generator_fixed_pre.h.