You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.0 KiB
43 lines
1.0 KiB
/*****************************************************************************
|
|
*
|
|
* hash.c
|
|
*
|
|
* Hashing tokens.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#include "m4.h"
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* hashPtok
|
|
*
|
|
* Hash a token.
|
|
*
|
|
* For now, use some hash function.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
HASH STDCALL
|
|
hashPtok(PCTOK ptok)
|
|
{
|
|
HASH hash = 0;
|
|
PTCH ptch;
|
|
for (ptch = ptchPtok(ptok); ptch < ptchMaxPtok(ptok); ptch++) {
|
|
hash += (hash << 1) + (hash >> 1) + *ptch;
|
|
}
|
|
return hash % g_hashMod;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* InitHash
|
|
*
|
|
*****************************************************************************/
|
|
|
|
void STDCALL
|
|
InitHash(void)
|
|
{
|
|
mphashpmac = pvAllocCb(g_hashMod * sizeof(PMAC));
|
|
bzero(mphashpmac, g_hashMod * sizeof(PMAC));
|
|
}
|