common.h

#ifndef COMMON_H
#define COMMON_H

#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(*(array)))


typedef enum {
    GR_OK = 0,              
    GR_INVALID_ARG,         
    GR_DUPLICATE_PORT,      
    GR_INVALID_PORT,        
    GR_INVALID_REGISTER,    
    GR_DUPLICATE_REGISTER,  
    GR_NO_ACCESS,           
    GR_INVALID_DATA,        
} GATE_RESULT;

#endif

---