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- /*
- * Copyright (c) 2006-2023, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date Author Notes
- * 2023-02-25 GuEe-GUI the first version
- */
- #ifndef __MISC_H__
- #define __MISC_H__
- #include <rtdef.h>
- #ifdef ARCH_CPU_64BIT
- #define RT_BITS_PER_LONG 64
- #else
- #define RT_BITS_PER_LONG 32
- #endif
- #define RT_BITS_PER_LONG_LONG 64
- #define RT_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
- #define RT_DIV_ROUND_CLOSEST(x, divisor) \
- ({ \
- typeof(x) __x = x; \
- typeof(divisor) __d = divisor; \
- (((typeof(x))-1) > 0 || \
- ((typeof(divisor))-1) > 0 || \
- (((__x) > 0) == ((__d) > 0))) ? \
- (((__x) + ((__d) / 2)) / (__d)) : \
- (((__x) - ((__d) / 2)) / (__d)); \
- })
- #define RT_BIT(n) (1UL << (n))
- #define RT_BIT_ULL(n) (1ULL << (n))
- #define RT_BIT_MASK(nr) (1UL << ((nr) % RT_BITS_PER_LONG))
- #define RT_BIT_WORD(nr) ((nr) / RT_BITS_PER_LONG)
- #define RT_BITS_PER_BYTE 8
- #define RT_BITS_PER_TYPE(type) (sizeof(type) * RT_BITS_PER_BYTE)
- #define RT_BITS_TO_BYTES(nr) RT_DIV_ROUND_UP(nr, RT_BITS_PER_TYPE(char))
- #define RT_BITS_TO_LONGS(nr) RT_DIV_ROUND_UP(nr, RT_BITS_PER_TYPE(long))
- #define RT_GENMASK(h, l) (((~0UL) << (l)) & (~0UL >> (RT_BITS_PER_LONG - 1 - (h))))
- #define RT_GENMASK_ULL(h, l) (((~0ULL) << (l)) & (~0ULL >> (RT_BITS_PER_LONG_LONG - 1 - (h))))
- #define RT_ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
- #define rt_min(x, y) \
- ({ \
- typeof(x) _x = (x); \
- typeof(y) _y = (y); \
- (void) (&_x == &_y); \
- _x < _y ? _x : _y; \
- })
- #define rt_max(x, y) \
- ({ \
- typeof(x) _x = (x); \
- typeof(y) _y = (y); \
- (void) (&_x == &_y); \
- _x > _y ? _x : _y; \
- })
- #define rt_min_t(type, x, y) \
- ({ \
- type _x = (x); \
- type _y = (y); \
- _x < _y ? _x: _y; \
- })
- #define rt_clamp(val, lo, hi) rt_min((typeof(val))rt_max(val, lo), hi)
- #define rt_do_div(n, base) \
- ({ \
- rt_uint32_t _base = (base), _rem; \
- _rem = ((rt_uint64_t)(n)) % _base; \
- (n) = ((rt_uint64_t)(n)) / _base; \
- if (_rem > _base / 2) \
- ++(n); \
- _rem; \
- })
- #endif /* __MISC_H__ */
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