44 lines
997 B
C
44 lines
997 B
C
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/*****************************************************************************
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*
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* hash.c
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*
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* Hashing tokens.
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*
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*****************************************************************************/
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#include "m4.h"
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/*****************************************************************************
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*
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* hashPtok
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*
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* Hash a token.
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*
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* For now, use some hash function.
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*
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*****************************************************************************/
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HASH STDCALL
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hashPtok(PCTOK ptok)
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{
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HASH hash = 0;
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PTCH ptch;
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for (ptch = ptchPtok(ptok); ptch < ptchMaxPtok(ptok); ptch++) {
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hash += (hash << 1) + (hash >> 1) + *ptch;
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}
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return hash % g_hashMod;
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}
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/*****************************************************************************
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*
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* InitHash
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*
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*****************************************************************************/
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void STDCALL
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InitHash(void)
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{
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mphashpmac = pvAllocCb(g_hashMod * sizeof(PMAC));
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bzero(mphashpmac, g_hashMod * sizeof(PMAC));
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}
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