#include "embryo_private.h"
#include <time.h>

static int _embryo_init_count = 0;

/*** EXPORTED CALLS ***/

/**
 * @defgroup Embryo_Library_Group Library Maintenance Functions
 *
 * Functions that start up and shutdown the Embryo library.
 */

/** 
 * Initialises the Embryo library.
 * @return  The number of times the library has been initialised without being
 *          shut down.
 * @ingroup Embryo_Library_Group
 */   
int
embryo_init(void)
{
   _embryo_init_count++;
   if (_embryo_init_count > 1) return _embryo_init_count;
   
   srand(time(NULL));
   
   return _embryo_init_count;
}

/**
 * Shuts down the Embryo library.
 * @return  The number of times the library has been initialised without being
 *          shutdown.
 * @ingroup Embryo_Library_Group
 */
int
embryo_shutdown(void)
{
   _embryo_init_count--;
   if (_embryo_init_count > 0) return _embryo_init_count;
   
   return _embryo_init_count;
}