bitfield.h File Reference

#include <zrtos/types.h>
#include <zrtos/mem.h>

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Data Structures
struct	zrtos_bitfield_t

Macros
#define	ZRTOS_BITFIELD__NFDBITS   (8 * sizeof(zrtos_bitfield_mask_t))
#define	ZRTOS_BITFIELD__ELT(d)   (((size_t)d) / ZRTOS_BITFIELD__NFDBITS)
#define	ZRTOS_BITFIELD__MASK(d)   ((zrtos_bitfield_mask_t) (1 << (((size_t)d) % ZRTOS_BITFIELD__NFDBITS)))
#define	ZRTOS_BITFIELD__MASK_MSB(d)   ((zrtos_bitfield_mask_t) (1 << (7-(((size_t)d) % ZRTOS_BITFIELD__NFDBITS))))
#define	ZRTOS_BITFIELD__EACH(thiz, len, pos)

Typedefs
typedef uint8_t	zrtos_bitfield_mask_t

Functions
void	zrtos_bitfield__set (zrtos_bitfield_t *thiz, size_t pos, bool val)
void	zrtos_bitfield__set_msb (zrtos_bitfield_t *thiz, size_t pos, bool val)
bool	zrtos_bitfield__get (zrtos_bitfield_t *thiz, size_t pos)
uint8_t	zrtos_bitfield__get_uint8 (zrtos_bitfield_t *thiz, size_t pos)
void	zrtos_bitfield__zero (zrtos_bitfield_t *thiz, size_t len)
void	zrtos_bitfield__copy (zrtos_bitfield_t *thiz, zrtos_bitfield_t *src, size_t len)
size_t	zrtos_bitfield__find_first (zrtos_bitfield_t *thiz, size_t len, size_t start, bool zero)
size_t	zrtos_bitfield__find_first_zero (zrtos_bitfield_t *thiz, size_t len, size_t start)
size_t	zrtos_bitfield__find_first_set (zrtos_bitfield_t *thiz, size_t len, size_t start)

Macro Definition Documentation

ZRTOS_BITFIELD__EACH

#define ZRTOS_BITFIELD__EACH	(		thiz,
			len,
			pos
	)

Value:

for(size_t pos = 0                                                         \
       ; ZRTOS_TYPES__SIZE_MAX                                                 \
       != (pos = zrtos_bitfield__find_first_set(thiz,len,pos))                 \
       ;pos++                                                                  \
    )

Definition at line 114 of file bitfield.h.

ZRTOS_BITFIELD__ELT

#define ZRTOS_BITFIELD__ELT

(

d

)

(((size_t)d) / ZRTOS_BITFIELD__NFDBITS)

Definition at line 27 of file bitfield.h.

ZRTOS_BITFIELD__MASK

#define ZRTOS_BITFIELD__MASK

(

d

)

((zrtos_bitfield_mask_t) (1 << (((size_t)d) % ZRTOS_BITFIELD__NFDBITS)))

Definition at line 28 of file bitfield.h.

ZRTOS_BITFIELD__MASK_MSB

#define ZRTOS_BITFIELD__MASK_MSB

(

d

)

((zrtos_bitfield_mask_t) (1 << (7-(((size_t)d) % ZRTOS_BITFIELD__NFDBITS))))

Definition at line 29 of file bitfield.h.

ZRTOS_BITFIELD__NFDBITS

#define ZRTOS_BITFIELD__NFDBITS   (8 * sizeof(zrtos_bitfield_mask_t))

Definition at line 26 of file bitfield.h.

Typedef Documentation

zrtos_bitfield_mask_t

typedef uint8_t zrtos_bitfield_mask_t

Definition at line 18 of file bitfield.h.

Function Documentation

zrtos_bitfield__copy()

void zrtos_bitfield__copy	(	zrtos_bitfield_t *	thiz,
		zrtos_bitfield_t *	src,
		size_t	len
	)

Definition at line 63 of file bitfield.h.

                                                                                  {
    zrtos_mem__cpy(thiz,src,len);
}

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zrtos_bitfield__find_first()

size_t zrtos_bitfield__find_first	(	zrtos_bitfield_t *	thiz,
		size_t	len,
		size_t	start,
		bool	zero
	)

Definition at line 67 of file bitfield.h.

 {
    len *= ZRTOS_BITFIELD__NFDBITS;
    for(size_t i=start;i<len;i++){
        bool val = zrtos_bitfield__get(thiz,i);

        if(zero){
            val = !val;
        }

        if(val){
            return i;
        }
    }
    return ZRTOS_TYPES__SIZE_MAX;
}

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zrtos_bitfield__find_first_set()

size_t zrtos_bitfield__find_first_set	(	zrtos_bitfield_t *	thiz,
		size_t	len,
		size_t	start
	)

Definition at line 101 of file bitfield.h.

 {
    return zrtos_bitfield__find_first(
         thiz
        ,len
        ,start
        ,false
    );
}

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zrtos_bitfield__find_first_zero()

size_t zrtos_bitfield__find_first_zero	(	zrtos_bitfield_t *	thiz,
		size_t	len,
		size_t	start
	)

Definition at line 88 of file bitfield.h.

 {
    return zrtos_bitfield__find_first(
         thiz
        ,len
        ,start
        ,true
    );
}

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zrtos_bitfield__get()

bool zrtos_bitfield__get	(	zrtos_bitfield_t *	thiz,
		size_t	pos
	)

Definition at line 49 of file bitfield.h.

                                                           {
    return 0 != (
        (&thiz->val)[ZRTOS_BITFIELD__ELT(pos)] & ZRTOS_BITFIELD__MASK(pos)
    );
}

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zrtos_bitfield__get_uint8()

uint8_t zrtos_bitfield__get_uint8	(	zrtos_bitfield_t *	thiz,
		size_t	pos
	)

Definition at line 55 of file bitfield.h.

                                                                    {
    return (&thiz->val)[pos];
}

zrtos_bitfield__set()

void zrtos_bitfield__set	(	zrtos_bitfield_t *	thiz,
		size_t	pos,
		bool	val
	)

Definition at line 31 of file bitfield.h.

                                                                    {
    zrtos_bitfield_mask_t *tmp = &(&thiz->val)[ZRTOS_BITFIELD__ELT(pos)];
    if(val){
        *tmp |= ZRTOS_BITFIELD__MASK(pos);
    }else{
        *tmp &= ~ZRTOS_BITFIELD__MASK(pos);
    }
}

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zrtos_bitfield__set_msb()

void zrtos_bitfield__set_msb	(	zrtos_bitfield_t *	thiz,
		size_t	pos,
		bool	val
	)

Definition at line 40 of file bitfield.h.

                                                                        {
    zrtos_bitfield_mask_t *tmp = &(&thiz->val)[ZRTOS_BITFIELD__ELT(pos)];
    if(val){
        *tmp |= ZRTOS_BITFIELD__MASK_MSB(pos);
    }else{
        *tmp &= ~ZRTOS_BITFIELD__MASK_MSB(pos);
    }
}

zrtos_bitfield__zero()

void zrtos_bitfield__zero	(	zrtos_bitfield_t *	thiz,
		size_t	len
	)

Definition at line 59 of file bitfield.h.

                                                            {
    zrtos_mem__zero(thiz,len);
}

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