stddef.h

Go to the documentation of this file.

 
#pragma once
 
#ifndef NULL
#define NULL ((void *)0)
#endif
 
#ifndef EOF
#define EOF (-1)
#endif
 
#define BUFSIZ 512
 
typedef long signed int ptrdiff_t;
 
typedef unsigned char byte_t;
 
typedef unsigned long size_t;
 
typedef long ssize_t;
 
typedef unsigned int ino_t;
 
typedef unsigned int dev_t;
 
typedef int uid_t;
 
typedef int gid_t;
 
typedef long int off_t;
 
typedef unsigned int mode_t;
 
typedef unsigned int pgprot_t;
 
#define offsetof(type, member) \
    ((size_t) & (((type *)0)->member))
 
#if 1
#define container_of(ptr, type, member) \
    ((type *)((char *)(1 ? (ptr) : &((type *)0)->member) - offsetof(type, member)))
#else
#define container_of(ptr, type, member) \
    ((type *)((char *)ptr - offsetof(type, member)))
#endif
 
#define alignof(type) offsetof( \
    struct { char c; type member; }, member)
 
#define count_of(x) ((sizeof(x) / sizeof((x)[0])) / ((size_t)(!(sizeof(x) % sizeof((x)[0])))))
 
#define swap(a, b)             \
    do {                       \
        typeof(a) temp = (a);  \
        (a)            = (b);  \
        (b)            = temp; \
    } while (0)