utils.h

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#ifndef ECU_UTILS_H_
#define ECU_UTILS_H_
 
/*------------------------------------------------------------*/
/*------------------------- INCLUDES -------------------------*/
/*------------------------------------------------------------*/
 
/* STDLib. */
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
 
/*------------------------------------------------------------*/
/*---------------------------- MACROS ------------------------*/
/*------------------------------------------------------------*/
 
#define ECU_CONTAINER_OF(ptr_, type_, member_) \
    ((type_ *)(void *)((uint8_t *)(ptr_) - offsetof(type_, member_)))
 
#define ECU_CONST_CONTAINER_OF(ptr_, type_, member_) \
    ((const type_ *)(const void *)((const uint8_t *)(ptr_) - offsetof(type_, member_)))
 
#define ECU_FIELD_SIZEOF(type_, member_) \
    (sizeof(((type_ *)0)->member_))
 
#define ECU_IS_BASE_OF(base_, derived_) \
    ((bool)(offsetof(derived_, base_) == (size_t)0))
 
/* clang-format off */
#define ECU_IS_SIGNED(type_) \
    ((bool)((type_)-1 < (type_)0))
 
#define ECU_IS_UNSIGNED(type_) \
    ((bool)((type_)-1 > (type_)0))
/* clang-format on */
 
#endif /* ECU_UTILS_H_ */