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#ifndef MACROS_H
 
#define check_size(_t, _size) assert(sizeof(_t) == (_size))
 
#define check_align(_t, _align) assert(__alignof__(_t) == (_align))
 
#define check_align_lv(_t, _align) assert(__alignof__(_t) == (_align) \
					  && (((unsigned long)&(_t)) & ((_align) - 1) ) == 0)
 
#define check_basic_struct_size_and_align(_type, _size, _align) { \
  struct _str { _type dummy; } _t; \
  check_size(_t, _size); \
  check_align_lv(_t, _align); \
}
 
#define check_array_size_and_align(_type, _size, _align) { \
  _type _a[1]; _type _b[2]; _type _c[16]; \
  struct _str { _type _a[1]; } _s; \
  check_align_lv(_a[0], _align); \
  check_size(_a, _size); \
  check_size(_b, (_size*2)); \
  check_size(_c, (_size*16)); \
  check_size(_s, _size); \
  check_align_lv(_s._a[0], _align); \
}
 
#define check_basic_union_size_and_align(_type, _size, _align) { \
  union _union { _type dummy; } _u; \
  check_size(_u, _size); \
  check_align_lv(_u, _align); \
}
 
#define run_signed_tests2(_function, _arg1, _arg2) \
  _function(_arg1, _arg2); \
  _function(signed _arg1, _arg2); \
  _function(unsigned _arg1, _arg2);
 
#define run_signed_tests3(_function, _arg1, _arg2, _arg3) \
  _function(_arg1, _arg2, _arg3); \
  _function(signed _arg1, _arg2, _arg3); \
  _function(unsigned _arg1, _arg2, _arg3);
 
/* Check size of a struct and a union of three types.  */
 
#define check_struct_and_union3(type1, type2, type3, struct_size, align_size) \
{ \
  struct _str { type1 t1; type2 t2; type3 t3; } _t; \
  union _uni { type1 t1; type2 t2; type3 t3; } _u; \
  check_size(_t, struct_size); \
  check_size(_u, align_size); \
}
 
#endif // MACROS_H