utils.c File Reference

Utility functions for random number handling, etc. More...

#include "utils.h"
#include <limits.h>
#include <stdbool.h>
#include <time.h>

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Functions
void	rand_init (void)
	Initialises the pseudo-random number generator. More...
void	rand_init_seed (const uint32_t seed)
	Initialises the pseudo-random number generator with a fixed seed. More...
double	rand_uniform (const double min, const double max)
	Returns a uniform random float [min,max]. More...
int	rand_uniform_int (const int min, const int max)
	Returns a uniform random integer [min,max] not inclusive of max. More...
double	rand_normal (const double mu, const double sigma)
	Returns a random Gaussian with specified mean and standard deviation. More...
void	utils_json_parse_check (const cJSON *json)
	Checks whether JSON parsed correctly. More...

Detailed Description

Utility functions for random number handling, etc.

Author

Richard Preen rpree.nosp@m.n@gm.nosp@m.ail.c.nosp@m.om

David Pätzel

Copyright

The Authors.

Date

2015–2021.

Definition in file utils.c.

Function Documentation

rand_init()

void rand_init

(

void

)

Initialises the pseudo-random number generator.

Definition at line 34 of file utils.c.

Referenced by param_set_random_state().

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rand_init_seed()

void rand_init_seed

(

const uint32_t

seed

)

Initialises the pseudo-random number generator with a fixed seed.

Parameters

[in]

seed

Random number seed.

Definition at line 50 of file utils.c.

Referenced by param_set_random_state().

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rand_normal()

double rand_normal	(	const double	mu,
		const double	sigma
	)

Returns a random Gaussian with specified mean and standard deviation.

Box-Muller transform.

Parameters

[in]	mu	Mean.
[in]	sigma	Standard deviation.

Returns

A random float.

Definition at line 87 of file utils.c.

Referenced by cond_ellipsoid_mutate(), cond_rectangle_mutate(), layer_add_neurons(), layer_ensure_input_represention(), layer_mutate_connectivity(), layer_mutate_eta(), layer_mutate_neurons(), layer_mutate_weights(), layer_weight_rand(), neural_layer_connected_init(), neural_layer_connected_resize(), neural_layer_convolutional_add_filters(), neural_layer_convolutional_init(), neural_layer_convolutional_mutate_filter(), neural_layer_convolutional_resize(), neural_layer_noise_forward(), pred_nlms_mutate(), and sam_adapt().

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rand_uniform()

double rand_uniform	(	const double	min,
		const double	max
	)

Returns a uniform random float [min,max].

Parameters

[in]	min	Minimum value.
[in]	max	Maximum value.

Returns

A random float.

Definition at line 62 of file utils.c.

Referenced by act_integer_mutate(), clset_pset_roulette(), cond_ellipsoid_cover(), cond_ellipsoid_crossover(), cond_ellipsoid_init(), cond_gp_crossover(), cond_rectangle_cover(), cond_rectangle_crossover(), cond_rectangle_init(), cond_ternary_cover(), cond_ternary_crossover(), cond_ternary_mutate(), cond_ternary_rand(), ea_select_rw(), ea_select_tournament(), env_mux_get_state(), graph_mutate_connectivity(), graph_mutate_functions(), graph_rand(), layer_add_neurons(), layer_init_eta(), layer_mutate_connectivity(), layer_mutate_functions(), layer_mutate_neurons(), neural_layer_convolutional_mutate_filter(), neural_layer_dropout_forward(), neural_layer_noise_forward(), pred_nlms_init(), rand_uniform_int(), random_connection(), sam_adapt(), sam_init(), tree_args_init_constants(), tree_grow(), tree_mutate(), and xcs_rl_decision().

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rand_uniform_int()

int rand_uniform_int	(	const int	min,
		const int	max
	)

Returns a uniform random integer [min,max] not inclusive of max.

Parameters

[in]	min	Minimum value.
[in]	max	Maximum value (non-inclusive).

Returns

A random integer.

Definition at line 74 of file utils.c.

References rand_uniform().

Referenced by act_integer_init(), act_integer_mutate(), ea_subsume(), env_maze_reset(), graph_mutate_functions(), graph_rand(), layer_ensure_input_represention(), layer_mutate_functions(), pa_best_action(), pa_rand_action(), random_connection(), sam_adapt(), sam_init(), tree_crossover(), tree_grow(), tree_mutate(), and xcs_supervised_sample().

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utils_json_parse_check()

void utils_json_parse_check

(

const cJSON *

json

)

Checks whether JSON parsed correctly.

Precondition

cJSON_Parse() called on the cJSON object.

Parameters

[in]

json

cJSON object.

Definition at line 109 of file utils.c.

Referenced by clset_json_insert(), XCS::json_insert_cl(), and param_json_import().

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