diff options
Diffstat (limited to 'include/apos')
| -rw-r--r-- | include/apos/utils.h | 114 |
1 files changed, 93 insertions, 21 deletions
diff --git a/include/apos/utils.h b/include/apos/utils.h index 1d1d6dd..ce48776 100644 --- a/include/apos/utils.h +++ b/include/apos/utils.h @@ -49,34 +49,106 @@ #include <apos/types.h> -static inline uintptr_t align_up(uintptr_t val, uintptr_t a) -{ - if (!a) - return val; +#define align_up(x, y) \ + _Generic((x), int8_t \ + : align_up_int8_t, int16_t \ + : align_up_int16_t, int32_t \ + : align_up_int32_t, int64_t \ + : align_up_int64_t, \ + \ + uint8_t \ + : align_up_uint8_t, uint16_t \ + : align_up_uint16_t, uint32_t \ + : align_up_uint32_t, uint64_t \ + : align_up_uint64_t)((x), (y)) - uintptr_t rem = val % a; +#define DEFINE_ALIGN_UP(type) \ + static inline type align_up_##type(type val, type a) \ + { \ + if (!a) \ + return val; \ + \ + type rem = val % a; \ + \ + if (rem == 0) \ + return val; \ + \ + return val + a - rem; \ + } - if (rem == 0) - return val; +DEFINE_ALIGN_UP(int8_t); +DEFINE_ALIGN_UP(int16_t); +DEFINE_ALIGN_UP(int32_t); +DEFINE_ALIGN_UP(int64_t); - return val + a - rem; -} +DEFINE_ALIGN_UP(uint8_t); +DEFINE_ALIGN_UP(uint16_t); +DEFINE_ALIGN_UP(uint32_t); +DEFINE_ALIGN_UP(uint64_t); -static inline uintptr_t align_down(uintptr_t val, uintptr_t a) -{ - if (!a) - return val; +#define align_down(x, y) \ + _Generic((x), int8_t \ + : align_down_int8_t, int16_t \ + : align_down_int16_t, int32_t \ + : align_down_int32_t, int64_t \ + : align_down_int64_t, \ + \ + uint8_t \ + : align_down_uint8_t, uint16_t \ + : align_down_uint16_t, uint32_t \ + : align_down_uint32_t, uint64_t \ + : align_down_uint64_t)((x), (y)) - return val - (val % a); -} +#define DEFINE_ALIGN_DOWN(type) \ + static inline type align_down_##type(type val, type a) \ + { \ + if (!a) \ + return val; \ + \ + return val - (val % a); \ + } -static inline bool aligned(uintmax_t val, uintmax_t a) -{ - if (!a) - return true; +DEFINE_ALIGN_DOWN(int8_t); +DEFINE_ALIGN_DOWN(int16_t); +DEFINE_ALIGN_DOWN(int32_t); +DEFINE_ALIGN_DOWN(int64_t); - return val % a == 0; -} +DEFINE_ALIGN_DOWN(uint8_t); +DEFINE_ALIGN_DOWN(uint16_t); +DEFINE_ALIGN_DOWN(uint32_t); +DEFINE_ALIGN_DOWN(uint64_t); + +#define is_aligned(x, y) \ + _Generic((x), int8_t \ + : is_aligned_int8_t, int16_t \ + : is_aligned_int16_t, int32_t \ + : is_aligned_int32_t, int64_t \ + : is_aligned_int64_t, \ + \ + uint8_t \ + : is_aligned_uint8_t, uint16_t \ + : is_aligned_uint16_t, uint32_t \ + : is_aligned_uint32_t, uint64_t \ + : is_aligned_uint64_t)((x), (y)) + +#define DEFINE_ALIGNED(type) \ + static inline bool is_aligned_##type(type val, type a) \ + { \ + if (!a) \ + return true; \ + \ + return val % a == 0; \ + } + +DEFINE_ALIGNED(int8_t); +DEFINE_ALIGNED(int16_t); +DEFINE_ALIGNED(int32_t); +DEFINE_ALIGNED(int64_t); + +DEFINE_ALIGNED(uint8_t); +DEFINE_ALIGNED(uint16_t); +DEFINE_ALIGNED(uint32_t); +DEFINE_ALIGNED(uint64_t); static inline int asciinum(char c) { |