0545e9dc6d
commit d1edce71135cc6d98c0a4b5729774542b676e769 Author: sophgo-forum-service <forum_service@sophgo.com> Date: Fri Mar 15 16:07:33 2024 +0800 [fix] recommend using ssh method to clone repo. [fix] fix sensor driver repo branch name.
103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/*
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* Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef __UTILS_DEF_H__
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#define __UTILS_DEF_H__
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/* Compute the number of elements in the given array */
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#define ARRAY_SIZE(a) \
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(sizeof(a) / sizeof((a)[0]))
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#define IS_POWER_OF_TWO(x) \
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(((x) & ((x) - 1)) == 0)
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#define SIZE_FROM_LOG2_WORDS(n) (4 << (n))
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#define BIT(nr) (1UL << (nr))
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// Get a bit field from a value
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#define GET_FIELD(Var, Mask, Shift) (((Var) >> (Shift)) & (Mask))
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#define MIN(x, y) __extension__ ({ \
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__typeof__(x) _x = (x); \
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__typeof__(y) _y = (y); \
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(void)(&_x == &_y); \
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_x < _y ? _x : _y; \
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})
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#define MAX(x, y) __extension__ ({ \
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__typeof__(x) _x = (x); \
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__typeof__(y) _y = (y); \
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(void)(&_x == &_y); \
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_x > _y ? _x : _y; \
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})
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#define IN_RANGE(_addr, _start, _size) ({ \
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(_addr) >= (_start) && \
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(_addr) < ((_start) + (_size)); \
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})
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#define PTR_INC(base, offset) (void *)((uint8_t *)(base) + (offset))
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#define PTR_DEC(base, offset) (void *)((uint8_t *)(base) - (offset))
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#define ROUND_UP(divident, divisor) ((((divident) + (divisor) - 1) / (divisor)) * (divisor))
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#define ROUND_DOWN(divident, divisor) (((divident) / (divisor)) * (divisor))
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#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
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#define DIV_ROUND_CLOSEST(x, divisor)( \
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{ \
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typeof(x) __x = x; \
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typeof(divisor) __d = divisor; \
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(((typeof(x))-1) > 0 || \
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((typeof(divisor))-1) > 0 || \
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(((__x) > 0) == ((__d) > 0))) ? \
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(((__x) + ((__d) / 2)) / (__d)) : \
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(((__x) - ((__d) / 2)) / (__d)); \
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} \
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)
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/*
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* The round_up() macro rounds up a value to the given boundary in a
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* type-agnostic yet type-safe manner. The boundary must be a power of two.
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* In other words, it computes the smallest multiple of boundary which is
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* greater than or equal to value.
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*
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* round_down() is similar but rounds the value down instead.
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*/
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#define round_boundary(value, boundary) \
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((__typeof__(value))((boundary) - 1))
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#define round_up(value, boundary) \
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((((value) - 1) | round_boundary(value, boundary)) + 1)
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#define round_down(value, boundary) \
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((value) & ~round_boundary(value, boundary))
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/*
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* Evaluates to 1 if (ptr + inc) overflows, 0 otherwise.
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* Both arguments must be unsigned pointer values (i.e. uintptr_t).
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*/
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#define check_uptr_overflow(ptr, inc) \
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(((ptr) > UINTPTR_MAX - (inc)) ? 1 : 0)
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/*
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* For those constants to be shared between C and other sources, apply a 'u'
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* or 'ull' suffix to the argument only in C, to avoid undefined or unintended
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* behaviour.
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*
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* The GNU assembler and linker do not support the 'u' and 'ull' suffix (it
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* causes the build process to fail) therefore the suffix is omitted when used
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* in linker scripts and assembler files.
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*/
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#if defined(__LINKER__) || defined(__ASSEMBLY__)
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# define U(_x) (_x)
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# define ULL(_x) (_x)
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#else
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# define U(_x) (_x##u)
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# define ULL(_x) (_x##ull)
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#endif
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#endif /* __UTILS_DEF_H__ */
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