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- /* Perfect hashing function library. Contains functions to generate perfect
- hashing functions
- * (C) Mike van Emmerik
- */
- #define TRUE 1
- #define FALSE 0
- #define bool unsigned char
- #define byte unsigned char
- #define word unsigned short
- /* Prototypes */
- void hashParams(int NumEntry, int EntryLen, int SetSize, char SetMin,
- int NumVert); /* Set the parameters for the hash table */
- void hashCleanup(void); /* Frees memory allocated by hashParams() */
- void map(void); /* Part 1 of creating the tables */
- void assign(void); /* Part 2 of creating the tables */
- int hash(byte *s); /* Hash the string to an int 0 .. NUMENTRY-1 */
- word *readT1(void); /* Returns a pointer to the T1 table */
- word *readT2(void); /* Returns a pointer to the T2 table */
- word *readG(void); /* Returns a pointer to the g table */
- /* The application must provide these functions: */
- void getKey(int i, byte **pKeys);/* Set *keys to point to the i+1th key */
- void dispKey(int i); /* Display the key */
- /* Macro reads a LH word from the image regardless of host convention */
- #ifndef LH
- #define LH(p) ((int)((byte *)(p))[0] + ((int)((byte *)(p))[1] << 8))
- #endif
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