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Commit | Line | Data |
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14b0e578 CS |
1 | /* This is a public domain general purpose hash table package written by Peter Moore @ UCB. */\r |
2 | \r | |
3 | /* static char sccsid[] = "@(#) st.c 5.1 89/12/14 Crucible"; */\r | |
4 | \r | |
5 | //#include <stdio.h>\r | |
6 | //#include <stdlib.h>\r | |
7 | //#include <string.h>\r | |
8 | #include "OnigurumaUefiPort.h"\r | |
9 | \r | |
10 | #ifdef _WIN32\r | |
11 | #include <malloc.h>\r | |
12 | #endif\r | |
13 | \r | |
14 | #include "regint.h"\r | |
15 | #include "st.h"\r | |
16 | \r | |
17 | typedef struct st_table_entry st_table_entry;\r | |
18 | \r | |
19 | struct st_table_entry {\r | |
20 | unsigned int hash;\r | |
21 | st_data_t key;\r | |
22 | st_data_t record;\r | |
23 | st_table_entry *next;\r | |
24 | };\r | |
25 | \r | |
26 | #define ST_DEFAULT_MAX_DENSITY 5\r | |
27 | #define ST_DEFAULT_INIT_TABLE_SIZE 11\r | |
28 | \r | |
29 | /*\r | |
30 | * DEFAULT_MAX_DENSITY is the default for the largest we allow the\r | |
31 | * average number of items per bin before increasing the number of\r | |
32 | * bins\r | |
33 | *\r | |
34 | * DEFAULT_INIT_TABLE_SIZE is the default for the number of bins\r | |
35 | * allocated initially\r | |
36 | *\r | |
37 | */\r | |
38 | \r | |
39 | static int numcmp(long, long);\r | |
40 | static int numhash(long);\r | |
41 | static struct st_hash_type type_numhash = {\r | |
42 | numcmp,\r | |
43 | numhash,\r | |
44 | };\r | |
45 | \r | |
46 | /* extern int strcmp(const char *, const char *); */\r | |
47 | static int strhash(const char *);\r | |
48 | static struct st_hash_type type_strhash = {\r | |
49 | strcmp,\r | |
50 | strhash,\r | |
51 | };\r | |
52 | \r | |
53 | static void rehash(st_table *);\r | |
54 | \r | |
55 | #define alloc(type) (type*)xmalloc((unsigned)sizeof(type))\r | |
56 | #define Calloc(n,s) (char*)xcalloc((n),(s))\r | |
57 | \r | |
58 | #define EQUAL(table,x,y) ((x)==(y) || (*table->type->compare)((x),(y)) == 0)\r | |
59 | \r | |
60 | #define do_hash(key,table) (unsigned int)(*(table)->type->hash)((key))\r | |
61 | #define do_hash_bin(key,table) (do_hash(key, table)%(table)->num_bins)\r | |
62 | \r | |
63 | /*\r | |
64 | * MINSIZE is the minimum size of a dictionary.\r | |
65 | */\r | |
66 | \r | |
67 | #define MINSIZE 8\r | |
68 | \r | |
69 | /*\r | |
70 | Table of prime numbers 2^n+a, 2<=n<=30.\r | |
71 | */\r | |
72 | static const long primes[] = {\r | |
73 | 8 + 3,\r | |
74 | 16 + 3,\r | |
75 | 32 + 5,\r | |
76 | 64 + 3,\r | |
77 | 128 + 3,\r | |
78 | 256 + 27,\r | |
79 | 512 + 9,\r | |
80 | 1024 + 9,\r | |
81 | 2048 + 5,\r | |
82 | 4096 + 3,\r | |
83 | 8192 + 27,\r | |
84 | 16384 + 43,\r | |
85 | 32768 + 3,\r | |
86 | 65536 + 45,\r | |
87 | 131072 + 29,\r | |
88 | 262144 + 3,\r | |
89 | 524288 + 21,\r | |
90 | 1048576 + 7,\r | |
91 | 2097152 + 17,\r | |
92 | 4194304 + 15,\r | |
93 | 8388608 + 9,\r | |
94 | 16777216 + 43,\r | |
95 | 33554432 + 35,\r | |
96 | 67108864 + 15,\r | |
97 | 134217728 + 29,\r | |
98 | 268435456 + 3,\r | |
99 | 536870912 + 11,\r | |
100 | 1073741824 + 85,\r | |
101 | 0\r | |
102 | };\r | |
103 | \r | |
104 | static int\r | |
105 | new_size(size)\r | |
106 | int size;\r | |
107 | {\r | |
108 | int i;\r | |
109 | \r | |
110 | #if 0\r | |
111 | for (i=3; i<31; i++) {\r | |
b602265d | 112 | if ((1<<i) > size) return 1<<i;\r |
14b0e578 CS |
113 | }\r |
114 | return -1;\r | |
115 | #else\r | |
116 | int newsize;\r | |
117 | \r | |
118 | for (i = 0, newsize = MINSIZE;\r | |
b602265d DG |
119 | i < (int )(sizeof(primes)/sizeof(primes[0]));\r |
120 | i++, newsize <<= 1) {\r | |
121 | if (newsize > size) return primes[i];\r | |
14b0e578 CS |
122 | }\r |
123 | /* Ran out of polynomials */\r | |
124 | return -1; /* should raise exception */\r | |
125 | #endif\r | |
126 | }\r | |
127 | \r | |
128 | #ifdef HASH_LOG\r | |
129 | static int collision = 0;\r | |
130 | static int init_st = 0;\r | |
131 | \r | |
132 | static void\r | |
b602265d | 133 | stat_col(void)\r |
14b0e578 | 134 | {\r |
b602265d DG |
135 | FILE *f = fopen("/tmp/col", "w");\r |
136 | if (f == 0) return ;\r | |
137 | \r | |
138 | (void) fprintf(f, "collision: %d\n", collision);\r | |
139 | (void) fclose(f);\r | |
14b0e578 CS |
140 | }\r |
141 | #endif\r | |
142 | \r | |
143 | st_table*\r | |
144 | st_init_table_with_size(type, size)\r | |
145 | struct st_hash_type *type;\r | |
146 | int size;\r | |
147 | {\r | |
b602265d | 148 | st_table *tbl;\r |
14b0e578 CS |
149 | \r |
150 | #ifdef HASH_LOG\r | |
b602265d DG |
151 | if (init_st == 0) {\r |
152 | init_st = 1;\r | |
153 | atexit(stat_col);\r | |
154 | }\r | |
14b0e578 CS |
155 | #endif\r |
156 | \r | |
b602265d | 157 | size = new_size(size); /* round up to prime number */\r |
14b0e578 | 158 | \r |
b602265d DG |
159 | tbl = alloc(st_table);\r |
160 | if (tbl == 0) return 0;\r | |
14b0e578 | 161 | \r |
b602265d DG |
162 | tbl->type = type;\r |
163 | tbl->num_entries = 0;\r | |
164 | tbl->num_bins = size;\r | |
165 | tbl->bins = (st_table_entry **)Calloc(size, sizeof(st_table_entry*));\r | |
166 | if (tbl->bins == 0) {\r | |
167 | free(tbl);\r | |
168 | return 0;\r | |
169 | }\r | |
170 | \r | |
171 | return tbl;\r | |
14b0e578 CS |
172 | }\r |
173 | \r | |
174 | st_table*\r | |
175 | st_init_table(type)\r | |
176 | struct st_hash_type *type;\r | |
177 | {\r | |
b602265d | 178 | return st_init_table_with_size(type, 0);\r |
14b0e578 CS |
179 | }\r |
180 | \r | |
181 | st_table*\r | |
182 | st_init_numtable(void)\r | |
183 | {\r | |
b602265d | 184 | return st_init_table(&type_numhash);\r |
14b0e578 CS |
185 | }\r |
186 | \r | |
187 | st_table*\r | |
188 | st_init_numtable_with_size(size)\r | |
189 | int size;\r | |
190 | {\r | |
b602265d | 191 | return st_init_table_with_size(&type_numhash, size);\r |
14b0e578 CS |
192 | }\r |
193 | \r | |
194 | st_table*\r | |
195 | st_init_strtable(void)\r | |
196 | {\r | |
b602265d | 197 | return st_init_table(&type_strhash);\r |
14b0e578 CS |
198 | }\r |
199 | \r | |
200 | st_table*\r | |
201 | st_init_strtable_with_size(size)\r | |
202 | int size;\r | |
203 | {\r | |
b602265d | 204 | return st_init_table_with_size(&type_strhash, size);\r |
14b0e578 CS |
205 | }\r |
206 | \r | |
207 | void\r | |
208 | st_free_table(table)\r | |
209 | st_table *table;\r | |
210 | {\r | |
b602265d DG |
211 | register st_table_entry *ptr, *next;\r |
212 | int i;\r | |
14b0e578 | 213 | \r |
b602265d DG |
214 | for(i = 0; i < table->num_bins; i++) {\r |
215 | ptr = table->bins[i];\r | |
216 | while (ptr != 0) {\r | |
14b0e578 CS |
217 | next = ptr->next;\r |
218 | free(ptr);\r | |
219 | ptr = next;\r | |
14b0e578 | 220 | }\r |
b602265d DG |
221 | }\r |
222 | free(table->bins);\r | |
223 | free(table);\r | |
14b0e578 CS |
224 | }\r |
225 | \r | |
226 | #define PTR_NOT_EQUAL(table, ptr, hash_val, key) \\r | |
227 | ((ptr) != 0 && (ptr->hash != (hash_val) || !EQUAL((table), (key), (ptr)->key)))\r | |
228 | \r | |
229 | #ifdef HASH_LOG\r | |
230 | #define COLLISION collision++\r | |
231 | #else\r | |
232 | #define COLLISION\r | |
233 | #endif\r | |
234 | \r | |
235 | #define FIND_ENTRY(table, ptr, hash_val, bin_pos) do {\\r | |
236 | bin_pos = hash_val%(table)->num_bins;\\r | |
237 | ptr = (table)->bins[bin_pos];\\r | |
238 | if (PTR_NOT_EQUAL(table, ptr, hash_val, key)) {\\r | |
b602265d DG |
239 | COLLISION;\\r |
240 | while (PTR_NOT_EQUAL(table, ptr->next, hash_val, key)) {\\r | |
241 | ptr = ptr->next;\\r | |
242 | }\\r | |
243 | ptr = ptr->next;\\r | |
14b0e578 CS |
244 | }\\r |
245 | } while (0)\r | |
246 | \r | |
247 | int\r | |
248 | st_lookup(table, key, value)\r | |
b602265d DG |
249 | st_table *table;\r |
250 | register st_data_t key;\r | |
251 | st_data_t *value;\r | |
14b0e578 | 252 | {\r |
b602265d DG |
253 | unsigned int hash_val, bin_pos;\r |
254 | register st_table_entry *ptr;\r | |
14b0e578 | 255 | \r |
b602265d DG |
256 | hash_val = do_hash(key, table);\r |
257 | FIND_ENTRY(table, ptr, hash_val, bin_pos);\r | |
14b0e578 | 258 | \r |
b602265d DG |
259 | if (ptr == 0) {\r |
260 | return 0;\r | |
261 | }\r | |
262 | else {\r | |
263 | if (value != 0) *value = ptr->record;\r | |
264 | return 1;\r | |
265 | }\r | |
14b0e578 CS |
266 | }\r |
267 | \r | |
b602265d | 268 | #define ADD_DIRECT(table, key, value, hash_val, bin_pos, ret) \\r |
14b0e578 | 269 | do {\\r |
b602265d DG |
270 | st_table_entry *entry;\\r |
271 | if (table->num_entries/(table->num_bins) > ST_DEFAULT_MAX_DENSITY) {\\r | |
272 | rehash(table);\\r | |
273 | bin_pos = hash_val % table->num_bins;\\r | |
274 | }\\r | |
275 | entry = alloc(st_table_entry);\\r | |
276 | if (IS_NULL(entry)) return ret;\\r | |
277 | entry->hash = hash_val;\\r | |
278 | entry->key = key;\\r | |
279 | entry->record = value;\\r | |
280 | entry->next = table->bins[bin_pos];\\r | |
281 | table->bins[bin_pos] = entry;\\r | |
282 | table->num_entries++;\\r | |
14b0e578 CS |
283 | } while (0)\r |
284 | \r | |
285 | int\r | |
286 | st_insert(table, key, value)\r | |
b602265d DG |
287 | register st_table *table;\r |
288 | register st_data_t key;\r | |
289 | st_data_t value;\r | |
14b0e578 | 290 | {\r |
b602265d DG |
291 | unsigned int hash_val, bin_pos;\r |
292 | register st_table_entry *ptr;\r | |
14b0e578 | 293 | \r |
b602265d DG |
294 | hash_val = do_hash(key, table);\r |
295 | FIND_ENTRY(table, ptr, hash_val, bin_pos);\r | |
14b0e578 | 296 | \r |
b602265d DG |
297 | if (ptr == 0) {\r |
298 | ADD_DIRECT(table, key, value, hash_val, bin_pos, ONIGERR_MEMORY);\r | |
299 | return 0;\r | |
300 | }\r | |
301 | else {\r | |
302 | ptr->record = value;\r | |
303 | return 1;\r | |
304 | }\r | |
14b0e578 CS |
305 | }\r |
306 | \r | |
307 | void\r | |
308 | st_add_direct(table, key, value)\r | |
b602265d DG |
309 | st_table *table;\r |
310 | st_data_t key;\r | |
311 | st_data_t value;\r | |
14b0e578 | 312 | {\r |
b602265d | 313 | unsigned int hash_val, bin_pos;\r |
14b0e578 | 314 | \r |
b602265d DG |
315 | hash_val = do_hash(key, table);\r |
316 | bin_pos = hash_val % table->num_bins;\r | |
317 | ADD_DIRECT(table, key, value, hash_val, bin_pos,);\r | |
14b0e578 CS |
318 | }\r |
319 | \r | |
320 | static void\r | |
321 | rehash(table)\r | |
b602265d | 322 | register st_table *table;\r |
14b0e578 | 323 | {\r |
b602265d DG |
324 | register st_table_entry *ptr, *next, **new_bins;\r |
325 | int i, old_num_bins = table->num_bins, new_num_bins;\r | |
326 | unsigned int hash_val;\r | |
327 | \r | |
328 | new_num_bins = new_size(old_num_bins+1);\r | |
329 | new_bins = (st_table_entry**)Calloc(new_num_bins, sizeof(st_table_entry*));\r | |
330 | if (new_bins == 0) {\r | |
331 | return ;\r | |
332 | }\r | |
333 | \r | |
334 | for(i = 0; i < old_num_bins; i++) {\r | |
335 | ptr = table->bins[i];\r | |
336 | while (ptr != 0) {\r | |
14b0e578 CS |
337 | next = ptr->next;\r |
338 | hash_val = ptr->hash % new_num_bins;\r | |
339 | ptr->next = new_bins[hash_val];\r | |
340 | new_bins[hash_val] = ptr;\r | |
341 | ptr = next;\r | |
14b0e578 | 342 | }\r |
b602265d DG |
343 | }\r |
344 | free(table->bins);\r | |
345 | table->num_bins = new_num_bins;\r | |
346 | table->bins = new_bins;\r | |
14b0e578 CS |
347 | }\r |
348 | \r | |
349 | st_table*\r | |
350 | st_copy(old_table)\r | |
b602265d | 351 | st_table *old_table;\r |
14b0e578 | 352 | {\r |
b602265d DG |
353 | st_table *new_table;\r |
354 | st_table_entry *ptr, *entry;\r | |
355 | int i, num_bins = old_table->num_bins;\r | |
14b0e578 | 356 | \r |
b602265d DG |
357 | new_table = alloc(st_table);\r |
358 | if (new_table == 0) {\r | |
359 | return 0;\r | |
360 | }\r | |
14b0e578 | 361 | \r |
b602265d DG |
362 | *new_table = *old_table;\r |
363 | new_table->bins = (st_table_entry**)\r | |
364 | Calloc((unsigned)num_bins, sizeof(st_table_entry*));\r | |
14b0e578 | 365 | \r |
b602265d DG |
366 | if (new_table->bins == 0) {\r |
367 | free(new_table);\r | |
368 | return 0;\r | |
369 | }\r | |
14b0e578 | 370 | \r |
b602265d DG |
371 | for(i = 0; i < num_bins; i++) {\r |
372 | new_table->bins[i] = 0;\r | |
373 | ptr = old_table->bins[i];\r | |
374 | while (ptr != 0) {\r | |
14b0e578 CS |
375 | entry = alloc(st_table_entry);\r |
376 | if (entry == 0) {\r | |
b602265d DG |
377 | free(new_table->bins);\r |
378 | free(new_table);\r | |
379 | return 0;\r | |
14b0e578 CS |
380 | }\r |
381 | *entry = *ptr;\r | |
382 | entry->next = new_table->bins[i];\r | |
383 | new_table->bins[i] = entry;\r | |
384 | ptr = ptr->next;\r | |
14b0e578 | 385 | }\r |
b602265d DG |
386 | }\r |
387 | return new_table;\r | |
14b0e578 CS |
388 | }\r |
389 | \r | |
390 | int\r | |
391 | st_delete(table, key, value)\r | |
b602265d DG |
392 | register st_table *table;\r |
393 | register st_data_t *key;\r | |
394 | st_data_t *value;\r | |
14b0e578 | 395 | {\r |
b602265d DG |
396 | unsigned int hash_val;\r |
397 | st_table_entry *tmp;\r | |
398 | register st_table_entry *ptr;\r | |
14b0e578 | 399 | \r |
b602265d DG |
400 | hash_val = do_hash_bin(*key, table);\r |
401 | ptr = table->bins[hash_val];\r | |
14b0e578 | 402 | \r |
b602265d DG |
403 | if (ptr == 0) {\r |
404 | if (value != 0) *value = 0;\r | |
405 | return 0;\r | |
406 | }\r | |
407 | \r | |
408 | if (EQUAL(table, *key, ptr->key)) {\r | |
409 | table->bins[hash_val] = ptr->next;\r | |
410 | table->num_entries--;\r | |
411 | if (value != 0) *value = ptr->record;\r | |
412 | *key = ptr->key;\r | |
413 | free(ptr);\r | |
414 | return 1;\r | |
415 | }\r | |
416 | \r | |
417 | for(; ptr->next != 0; ptr = ptr->next) {\r | |
418 | if (EQUAL(table, ptr->next->key, *key)) {\r | |
14b0e578 CS |
419 | tmp = ptr->next;\r |
420 | ptr->next = ptr->next->next;\r | |
421 | table->num_entries--;\r | |
422 | if (value != 0) *value = tmp->record;\r | |
423 | *key = tmp->key;\r | |
424 | free(tmp);\r | |
425 | return 1;\r | |
14b0e578 | 426 | }\r |
b602265d | 427 | }\r |
14b0e578 | 428 | \r |
b602265d | 429 | return 0;\r |
14b0e578 CS |
430 | }\r |
431 | \r | |
432 | int\r | |
433 | st_delete_safe(table, key, value, never)\r | |
b602265d DG |
434 | register st_table *table;\r |
435 | register st_data_t *key;\r | |
436 | st_data_t *value;\r | |
437 | st_data_t never;\r | |
14b0e578 | 438 | {\r |
b602265d DG |
439 | unsigned int hash_val;\r |
440 | register st_table_entry *ptr;\r | |
14b0e578 | 441 | \r |
b602265d DG |
442 | hash_val = do_hash_bin(*key, table);\r |
443 | ptr = table->bins[hash_val];\r | |
14b0e578 | 444 | \r |
b602265d DG |
445 | if (ptr == 0) {\r |
446 | if (value != 0) *value = 0;\r | |
447 | return 0;\r | |
448 | }\r | |
14b0e578 | 449 | \r |
b602265d DG |
450 | for(; ptr != 0; ptr = ptr->next) {\r |
451 | if ((ptr->key != never) && EQUAL(table, ptr->key, *key)) {\r | |
14b0e578 CS |
452 | table->num_entries--;\r |
453 | *key = ptr->key;\r | |
454 | if (value != 0) *value = ptr->record;\r | |
455 | ptr->key = ptr->record = never;\r | |
456 | return 1;\r | |
14b0e578 | 457 | }\r |
b602265d | 458 | }\r |
14b0e578 | 459 | \r |
b602265d | 460 | return 0;\r |
14b0e578 CS |
461 | }\r |
462 | \r | |
463 | static int\r | |
464 | #if defined(__GNUC__)\r | |
465 | delete_never(st_data_t key __attribute__ ((unused)), st_data_t value,\r | |
466 | st_data_t never)\r | |
467 | #else\r | |
468 | delete_never(key, value, never)\r | |
469 | st_data_t key, value, never;\r | |
470 | #endif\r | |
471 | {\r | |
472 | if (value == never) return ST_DELETE;\r | |
473 | return ST_CONTINUE;\r | |
474 | }\r | |
475 | \r | |
476 | void\r | |
477 | st_cleanup_safe(table, never)\r | |
b602265d DG |
478 | st_table *table;\r |
479 | st_data_t never;\r | |
14b0e578 | 480 | {\r |
b602265d | 481 | int num_entries = table->num_entries;\r |
14b0e578 | 482 | \r |
b602265d DG |
483 | st_foreach(table, delete_never, never);\r |
484 | table->num_entries = num_entries;\r | |
14b0e578 CS |
485 | }\r |
486 | \r | |
487 | int\r | |
488 | st_foreach(table, func, arg)\r | |
b602265d DG |
489 | st_table *table;\r |
490 | int (*func)();\r | |
491 | st_data_t arg;\r | |
14b0e578 | 492 | {\r |
b602265d DG |
493 | st_table_entry *ptr, *last, *tmp;\r |
494 | enum st_retval retval;\r | |
495 | int i;\r | |
14b0e578 | 496 | \r |
b602265d DG |
497 | for(i = 0; i < table->num_bins; i++) {\r |
498 | last = 0;\r | |
499 | for(ptr = table->bins[i]; ptr != 0;) {\r | |
14b0e578 CS |
500 | retval = (*func)(ptr->key, ptr->record, arg);\r |
501 | switch (retval) {\r | |
502 | case ST_CHECK: /* check if hash is modified during iteration */\r | |
b602265d DG |
503 | tmp = 0;\r |
504 | if (i < table->num_bins) {\r | |
505 | for (tmp = table->bins[i]; tmp; tmp=tmp->next) {\r | |
506 | if (tmp == ptr) break;\r | |
507 | }\r | |
508 | }\r | |
509 | if (!tmp) {\r | |
510 | /* call func with error notice */\r | |
511 | return 1;\r | |
512 | }\r | |
513 | /* fall through */\r | |
14b0e578 | 514 | case ST_CONTINUE:\r |
b602265d DG |
515 | last = ptr;\r |
516 | ptr = ptr->next;\r | |
517 | break;\r | |
14b0e578 | 518 | case ST_STOP:\r |
b602265d | 519 | return 0;\r |
14b0e578 | 520 | case ST_DELETE:\r |
b602265d DG |
521 | tmp = ptr;\r |
522 | if (last == 0) {\r | |
523 | table->bins[i] = ptr->next;\r | |
524 | }\r | |
525 | else {\r | |
526 | last->next = ptr->next;\r | |
527 | }\r | |
528 | ptr = ptr->next;\r | |
529 | free(tmp);\r | |
530 | table->num_entries--;\r | |
14b0e578 | 531 | }\r |
14b0e578 | 532 | }\r |
b602265d DG |
533 | }\r |
534 | return 0;\r | |
14b0e578 CS |
535 | }\r |
536 | \r | |
537 | static int\r | |
538 | strhash(string)\r | |
b602265d | 539 | register const char *string;\r |
14b0e578 | 540 | {\r |
b602265d | 541 | register int c;\r |
14b0e578 CS |
542 | \r |
543 | #ifdef HASH_ELFHASH\r | |
b602265d | 544 | register unsigned int h = 0, g;\r |
14b0e578 | 545 | \r |
b602265d DG |
546 | while ((c = *string++) != '\0') {\r |
547 | h = ( h << 4 ) + c;\r | |
548 | if ( g = h & 0xF0000000 )\r | |
14b0e578 | 549 | h ^= g >> 24;\r |
b602265d DG |
550 | h &= ~g;\r |
551 | }\r | |
552 | return h;\r | |
14b0e578 | 553 | #elif HASH_PERL\r |
b602265d | 554 | register int val = 0;\r |
14b0e578 | 555 | \r |
b602265d DG |
556 | while ((c = *string++) != '\0') {\r |
557 | val += c;\r | |
558 | val += (val << 10);\r | |
559 | val ^= (val >> 6);\r | |
560 | }\r | |
561 | val += (val << 3);\r | |
562 | val ^= (val >> 11);\r | |
14b0e578 | 563 | \r |
b602265d | 564 | return val + (val << 15);\r |
14b0e578 | 565 | #else\r |
b602265d | 566 | register int val = 0;\r |
14b0e578 | 567 | \r |
b602265d DG |
568 | while ((c = *string++) != '\0') {\r |
569 | val = val*997 + c;\r | |
570 | }\r | |
14b0e578 | 571 | \r |
b602265d | 572 | return val + (val>>5);\r |
14b0e578 CS |
573 | #endif\r |
574 | }\r | |
575 | \r | |
576 | static int\r | |
577 | numcmp(x, y)\r | |
b602265d | 578 | long x, y;\r |
14b0e578 | 579 | {\r |
b602265d | 580 | return x != y;\r |
14b0e578 CS |
581 | }\r |
582 | \r | |
583 | static int\r | |
584 | numhash(n)\r | |
b602265d | 585 | long n;\r |
14b0e578 | 586 | {\r |
b602265d | 587 | return n;\r |
14b0e578 | 588 | }\r |