GIFHASH.H File Reference

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Data Structures
struct	GifHashTableType
	Structure used by GIF image code. More...
Defines
#define	HT_SIZE   8192
#define	HT_KEY_MASK   0x1FFF
#define	HT_KEY_NUM_BITS   13
#define	HT_MAX_KEY   8191
#define	HT_MAX_CODE   4095
#define	HT_GET_KEY(l)   (l >> 12)
#define	HT_GET_CODE(l)   (l & 0x0FFF)
#define	HT_PUT_KEY(l)   (l << 12)
#define	HT_PUT_CODE(l)   (l & 0x0FFF)
Functions
GifHashTableType *	_InitHashTable (void)
void	_ClearHashTable (GifHashTableType *HashTable)
void	_InsertHashTable (GifHashTableType *HashTable, unsigned long Key, long Code)
long	_ExistsHashTable (GifHashTableType *HashTable, unsigned long Key)

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Define Documentation

#define HT_SIZE   8192

Definition at line 8 of file GIFHASH.H.

Referenced by _ClearHashTable().

#define HT_KEY_MASK   0x1FFF

Definition at line 9 of file GIFHASH.H.

Referenced by _ExistsHashTable(), and _InsertHashTable().

#define HT_KEY_NUM_BITS   13

Definition at line 10 of file GIFHASH.H.

#define HT_MAX_KEY   8191

Definition at line 11 of file GIFHASH.H.

#define HT_MAX_CODE   4095

Definition at line 12 of file GIFHASH.H.

#define HT_GET_KEY

(

l

)

(l >> 12)

Definition at line 17 of file GIFHASH.H.

Referenced by _ExistsHashTable(), and _InsertHashTable().

#define HT_GET_CODE

(

l

)

(l & 0x0FFF)

Definition at line 18 of file GIFHASH.H.

Referenced by _ExistsHashTable().

#define HT_PUT_KEY

(

l

)

(l << 12)

Definition at line 19 of file GIFHASH.H.

Referenced by _InsertHashTable().

#define HT_PUT_CODE

(

l

)

(l & 0x0FFF)

Definition at line 20 of file GIFHASH.H.

Referenced by _InsertHashTable().

---

Function Documentation

GifHashTableType* _InitHashTable

(

void

)

Definition at line 24 of file GIFHASH.C.

References _ClearHashTable(), and X__Malloc.

Referenced by EGifOpenFileHandle().

void _ClearHashTable

(

GifHashTableType *

HashTable

)

Definition at line 40 of file GIFHASH.C.

References HT_SIZE.

Referenced by _InitHashTable().

void _InsertHashTable	(	GifHashTableType *	HashTable,
		unsigned long	Key,
		long	Code
	)

Definition at line 53 of file GIFHASH.C.

References HT_GET_KEY, HT_KEY_MASK, HT_PUT_CODE, and HT_PUT_KEY.

long _ExistsHashTable	(	GifHashTableType *	HashTable,
		unsigned long	Key
	)

Definition at line 74 of file GIFHASH.C.

References HT_GET_CODE, HT_GET_KEY, and HT_KEY_MASK.