bitarray.h File Reference

#include <stddef.h>
#include <stdint.h>
#include <zephyr/kernel.h>
#include <zephyr/sys/util.h>

Go to the source code of this file.

Macros
#define	SYS_BITARRAY_DEFINE(name, total_bits)
	Create a bitarray object.
#define	SYS_BITARRAY_DEFINE_STATIC(name, total_bits)
	Create a static bitarray object.

Typedefs
typedef struct sys_bitarray	sys_bitarray_t
	Bitarray structure.

Functions
int	sys_bitarray_set_bit (sys_bitarray_t *bitarray, size_t bit)
	Set a bit in a bit array.
int	sys_bitarray_clear_bit (sys_bitarray_t *bitarray, size_t bit)
	Clear a bit in a bit array.
int	sys_bitarray_test_bit (sys_bitarray_t *bitarray, size_t bit, int *val)
	Test whether a bit is set or not.
int	sys_bitarray_test_and_set_bit (sys_bitarray_t *bitarray, size_t bit, int *prev_val)
	Test the bit and set it.
int	sys_bitarray_test_and_clear_bit (sys_bitarray_t *bitarray, size_t bit, int *prev_val)
	Test the bit and clear it.
int	sys_bitarray_alloc (sys_bitarray_t *bitarray, size_t num_bits, size_t *offset)
	Allocate bits in a bit array.
int	sys_bitarray_xor (sys_bitarray_t *dst, sys_bitarray_t *other, size_t num_bits, size_t offset)
	Calculates the bit-wise XOR of two bitarrays in a region.
int	sys_bitarray_find_nth_set (sys_bitarray_t *bitarray, size_t n, size_t num_bits, size_t offset, size_t *found_at)
	Find nth bit set in region.
int	sys_bitarray_popcount_region (sys_bitarray_t *bitarray, size_t num_bits, size_t offset, size_t *count)
	Count bits set in a bit array region.
int	sys_bitarray_free (sys_bitarray_t *bitarray, size_t num_bits, size_t offset)
	Free bits in a bit array.
bool	sys_bitarray_is_region_set (sys_bitarray_t *bitarray, size_t num_bits, size_t offset)
	Test if bits in a region is all set.
bool	sys_bitarray_is_region_cleared (sys_bitarray_t *bitarray, size_t num_bits, size_t offset)
	Test if bits in a region is all cleared.
int	sys_bitarray_set_region (sys_bitarray_t *bitarray, size_t num_bits, size_t offset)
	Set all bits in a region.
int	sys_bitarray_test_and_set_region (sys_bitarray_t *bitarray, size_t num_bits, size_t offset, bool to_set)
	Test if all bits in a region are cleared/set and set/clear them in a single atomic operation.
int	sys_bitarray_clear_region (sys_bitarray_t *bitarray, size_t num_bits, size_t offset)
	Clear all bits in a region.