/**
 * @file obitypes.h
 * @author Celine Mercier
 * @date 18 May 2015
 * @brief Header file for the OBITypes.
 */

#ifndef OBITYPES_H_
#define OBITYPES_H_

#include <stdio.h>
#include <unistd.h>
#include <stdint.h>

#define OBIInt_NA (INT32_MIN)
#define OBIFloat_NA (NAN)
#define OBIIdx_NA (SIZE_MAX)

/**
 * @brief enum for the boolean OBIType.
 */

typedef enum {
    FALSE      = 0,
    TRUE       = 1,
    OBIBool_NA = 2
} OBIBool_t, *OBIBool_p; 		/**< a boolean true/false value */


/**
 * @brief enum OBITypes for the data type of the OBIColumns.
 */

typedef enum OBIType {
	OBI_VOID    = 0,     		/**< data type not specified */
	OBI_INT,			    	/**< a signed integer value (C type : int32_t) */
	OBI_FLOAT,					/**< a floating value (C type : double) */
	OBI_CHAR,					/**< a character (C type : char) */
	OBI_IDX					    /**< an index in a data structure (C type : size_t) */
} OBIType_t, *OBIType_p;

typedef int32_t obiint_t;
typedef double obifloat_t;
typedef char obichar_t;
typedef size_t obiidx_t;

/**
 * @brief returns the memory size in bytes of an OBIType
 *
 * @param type the OBIType code used as query
 *
 * @return the size in bytes of the type
 * @retval 0 on error (unknown type)
 *
 * @since May 2015
 * @author Eric Coissac (eric.coissac@metabarcoding.org)
 */
size_t obi_sizeof(OBIType_t type);

/**
 * @brief returns the size requested to store an array of OBIType
 *
 * The returned size is enouth large to store an array of size nbelement
 * but rounded at a multiple of the memory page size.
 *
 * @param type the OBIType code used as query
 * @param nbelement the number of element to be stored
 *
 * @return the size in bytes of the type
 * @retval 0 on error (unknown type)
 *
 * @since May 2015
 * @author Eric Coissac (eric.coissac@metabarcoding.org)
 */
size_t obi_array_sizeof(OBIType_t type,size_t nbelement);

#endif /* OBITYPES_H_ */