36 lines
552 B
C
36 lines
552 B
C
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int
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_eet_hash_gen(const char *key, int hash_size)
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{
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int hash_num = 0;
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int value, i;
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unsigned char *ptr;
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const int masks[9] =
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{
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0x00,
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0x01,
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0x03,
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0x07,
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0x0f,
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0x1f,
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0x3f,
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0x7f,
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0xff
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};
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/* no string - index 0 */
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if (!key) return 0;
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/* calc hash num */
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for (i = 0, ptr = (unsigned char *)key, value = (int)(*ptr);
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value;
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ptr++, i++, value = (int)(*ptr))
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hash_num ^= (value | (value << 8)) >> (i & 0x7);
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/* mask it */
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hash_num &= masks[hash_size];
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/* return it */
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return hash_num;
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}
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