/**
 * Copyright 2014 (c) Anna Schumaker
 */
#ifndef OCARINA_CORE_RANDOM_H
#define OCARINA_CORE_RANDOM_H

#ifdef CONFIG_TEST

void _seed_random(unsigned int);
unsigned int _pick_random();

#else /* CONFIG_TEST */

#include <stdlib.h>
static inline void _seed_random(unsigned int n) { srand(time(NULL) + n); }
static inline unsigned int _pick_random() { return rand(); }

#endif /* CONFIG_TEST */


/**
 * Seed the random number generator.
 *
 * @param  n  Value used to initialize the RNG
 */
static inline void random_seed(unsigned int n)
{
	_seed_random(n);
}

/**
 * Get a random number in the specified range.
 *
 * @param  min  Minimum value that will be returned.
 * @param  max  Maximum value that will be returned.
 * @return A random value where min <= value <= max.
 */
static inline unsigned int random(unsigned int min, unsigned int max)
{
	if (min >= max)
		return min;
	return min + (_pick_random() % (max - min));
}


#endif /* OCARINA_CORE_RANDOM_H */