4 #include "wimlib/types.h"
5 #include "wimlib/compiler.h"
11 #define min(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
12 (__a < __b) ? __a : __b; })
16 #define max(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
17 (__a > __b) ? __a : __b; })
21 #define swap(a, b) ({typeof(a) _a = a; (a) = (b); (b) = _a;})
25 * container_of - cast a member of a structure out to the containing structure
26 * @ptr: the pointer to the member.
27 * @type: the type of the container struct this is embedded in.
28 * @member: the name of the member within the struct.
32 #define container_of(ptr, type, member) ({ \
33 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
34 (type *)( (char *)__mptr - offsetof(type,member) );})
37 #define DIV_ROUND_UP(numerator, denominator) \
38 (((numerator) + (denominator) - 1) / (denominator))
40 #define MODULO_NONZERO(numerator, denominator) \
41 (((numerator) % (denominator)) ? ((numerator) % (denominator)) : (denominator))
43 #define ARRAY_LEN(array) (sizeof(array) / sizeof((array)[0]))
45 #define ZERO_ARRAY(array) memset(array, 0, sizeof(array))
47 /* Used for buffering FILE IO in a few places */
48 #define BUFFER_SIZE 32768
50 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
52 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
53 extern void *(*wimlib_malloc_func)(size_t);
54 extern void (*wimlib_free_func)(void *);
55 extern void *(*wimlib_realloc_func)(void *, size_t);
56 extern void *wimlib_calloc(size_t nmemb, size_t size);
58 extern wchar_t *wimlib_wcsdup(const wchar_t *str);
60 extern char *wimlib_strdup(const char *str);
61 # define MALLOC wimlib_malloc_func
62 # define FREE wimlib_free_func
63 # define REALLOC wimlib_realloc_func
64 # define CALLOC wimlib_calloc
65 # define STRDUP wimlib_strdup
66 # define WSTRDUP wimlib_wcsdup
67 #else /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */
70 # define MALLOC malloc
72 # define REALLOC realloc
73 # define CALLOC calloc
74 # define STRDUP strdup
75 # define WSTRDUP wcsdup
76 #endif /* !ENABLE_CUSTOM_MEMORY_ALLOCATOR */
81 randomize_byte_array(u8 *p, size_t n);
84 randomize_char_array_with_alnum(tchar p[], size_t n);
87 print_byte_field(const u8 field[], size_t len, FILE *out);
92 #if defined(__x86__) || defined(__x86_64__)
99 while ((n >>= 1) != 0)
108 return n * 0x9e37fffffffc0001ULL;
111 #endif /* _WIMLIB_UTIL_H */