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sys/bitfield: add bf_clear_all()

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Benjamin Valentin 2022-11-30 00:44:24 +01:00 committed by Benjamin Valentin
parent 9b09f673fd
commit 7ed0f7355f
1 changed files with 25 additions and 0 deletions
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25
sys/include/bitfield.h
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@ -32,6 +32,7 @@
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#include <string.h>
#include "irq.h"
#ifdef __cplusplus
@ -358,6 +359,30 @@ static inline void bf_set_all_atomic(uint8_t field[], size_t size)
irq_restore(state);
}
/**
* @brief Clear all bits in the bitfield to 0
*
* @param[in] field The bitfield
* @param[in] size The size of the bitfield
*/
static inline void bf_clear_all(uint8_t field[], size_t size)
{
memset(field, 0, (size + 7) / 8);
}
/**
* @brief Atomically clear all bits in the bitfield to 0
*
* @param[in] field The bitfield
* @param[in] size The size of the bitfield
*/
static inline void bf_clear_all_atomic(uint8_t field[], size_t size)
{
unsigned state = irq_disable();
bf_clear_all(field, size);
irq_restore(state);
}
/**
* @brief Count set bits in the bitfield
*