usual/bytemap.h File Reference

Map 256 byte values to bit or int. More...

Data Structures
struct	Bitmap256
	Bitmap of 256 bits. More...
Defines
#define	BITMAP256_CONST(check)
	Use C preprocessor to fill Bitmap256.
#define	INTMAP256_CONST(map_value)
	Use C preprocessor to generate array of 256 values.
Functions
static void	bitmap256_init (struct Bitmap256 *bmap)
	Clear bitmap.
static void	bitmap256_set (struct Bitmap256 *bmap, uint8_t byte)
	Set one bit.
static bool	bitmap256_is_set (const struct Bitmap256 *bmap, uint8_t byte)
	Check if bit is set.

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Detailed Description

Map 256 byte values to bit or int.

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Define Documentation

#define BITMAP256_CONST

(

check

)

Use C preprocessor to fill Bitmap256.

Usage:

 #define check_isdigit(c) ((c) >= '0' && (c) <= '9')
 static const struct Bitmap256 map_isdigit = BITMAP256_CONST(check_isdigit);

#define INTMAP256_CONST

(

map_value

)

Use C preprocessor to generate array of 256 values.

Usage:

 #define my_hexval(c) (((c) >= '0' && (c) <= '9') ? ((c) - '0') : ( \
                       ((c) >= 'A' && (c) <= 'F') ? ((c) - 'A' + 10) : ( \
                       ((c) >= 'a' && (c) <= 'f') ? ((c) - 'a' + 10) : -1 )))
 static const int map_hexval[] = INTMAP256_CONST(my_hexval);

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Function Documentation

static void bitmap256_init

(

struct Bitmap256 *

bmap

)

[inline, static]

Clear bitmap.

static void bitmap256_set	(	struct Bitmap256 *	bmap,
		uint8_t	byte
	)		[inline, static]

Set one bit.

static bool bitmap256_is_set	(	const struct Bitmap256 *	bmap,
		uint8_t	byte
	)		[inline, static]

Check if bit is set.