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Comparing deliantra/server/common/utils.C (file contents):
Revision 1.9 by root, Sun Sep 10 16:00:23 2006 UTC vs.
Revision 1.49 by root, Sat Apr 21 22:57:15 2007 UTC

1
2/* 1/*
3 * static char *rcsid_utils_c =
4 * "$Id: utils.C,v 1.9 2006/09/10 16:00:23 root Exp $";
5 */
6
7/*
8 CrossFire, A Multiplayer game for X-windows 2 * CrossFire, A Multiplayer game for X-windows
9 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
10 Copyright (C) 2002 Mark Wedel & Crossfire Development Team 5 * Copyright (C) 2002 Mark Wedel & Crossfire Development Team
11 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (C) 1992 Frank Tore Johansen
12 7 *
13 This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version. 11 * (at your option) any later version.
17 12 *
18 This program is distributed in the hope that it will be useful, 13 * This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details. 16 * GNU General Public License for more details.
22 17 *
23 You should have received a copy of the GNU General Public License 18 * You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software 19 * along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 21 *
27 The authors can be reached via e-mail at crossfire-devel@real-time.com 22 * The authors can be reached via e-mail at <crossfire@schmorp.de>
28*/ 23 */
29 24
30/* 25/*
31 * General convenience functions for crossfire. 26 * General convenience functions for crossfire.
32 */ 27 */
28
29#include <cstdlib>
30#include <sys/types.h>
31#include <unistd.h>
32#include <sys/time.h>
33#include <time.h>
34#include <signal.h>
33 35
34#include <global.h> 36#include <global.h>
35#include <funcpoint.h> 37#include <funcpoint.h>
36#include <material.h> 38#include <material.h>
37 39
38#include <glib.h> 40#include <glib.h>
41
42rand_gen rndm;
43
44void
45tausworthe_random_generator::seed (uint32_t seed)
46{
47 state [0] = seed * 69069U; if (state [0] < 2U) state [0] += 2U;
48 state [1] = state [0] * 69069U; if (state [0] < 8U) state [0] += 8U;
49 state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] += 16U;
50 state [3] = state [2] * 69069U; if (state [0] < 128) state [0] += 128U;
51
52 for (int i = 11; --i; )
53 operator ()();
54}
55
56uint32_t
57tausworthe_random_generator::next ()
58{
59 state [0] = ((state [0] & 0xFFFFFFFEU) << 18U) ^ (((state [0] << 6U) ^ state [0]) >> 13U);
60 state [1] = ((state [1] & 0xFFFFFFF8U) << 2U) ^ (((state [1] << 2U) ^ state [1]) >> 27U);
61 state [2] = ((state [2] & 0xFFFFFFF0U) << 7U) ^ (((state [2] << 13U) ^ state [2]) >> 21U);
62 state [3] = ((state [3] & 0xFFFFFF80U) << 13U) ^ (((state [3] << 3U) ^ state [3]) >> 12U);
63
64 return state [0] ^ state [1] ^ state [2] ^ state [3];
65}
66
67uint32_t
68tausworthe_random_generator::get_range (uint32_t r_max)
69{
70 return (next () * (uint64_t)r_max) >> 32U;
71}
72
73// return a number within (min .. max)
74int
75tausworthe_random_generator::get_range (int r_min, int r_max)
76{
77 return r_min + get_range (max (r_max - r_min + 1, 1));
78}
39 79
40/* 80/*
41 * The random functions here take luck into account when rolling random 81 * The random functions here take luck into account when rolling random
42 * dice or numbers. This function has less of an impact the larger the 82 * dice or numbers. This function has less of an impact the larger the
43 * difference becomes in the random numbers. IE, the effect is lessened 83 * difference becomes in the random numbers. IE, the effect is lessened
50 * Roll a random number between min and max. Uses op to determine luck, 90 * Roll a random number between min and max. Uses op to determine luck,
51 * and if goodbad is non-zero, luck increases the roll, if zero, it decreases. 91 * and if goodbad is non-zero, luck increases the roll, if zero, it decreases.
52 * Generally, op should be the player/caster/hitter requesting the roll, 92 * Generally, op should be the player/caster/hitter requesting the roll,
53 * not the recipient (ie, the poor slob getting hit). [garbled 20010916] 93 * not the recipient (ie, the poor slob getting hit). [garbled 20010916]
54 */ 94 */
55
56int 95int
57random_roll (int min, int max, const object *op, int goodbad) 96random_roll (int r_min, int r_max, const object *op, int goodbad)
58{ 97{
98 int base = r_max - r_min > 1 ? 20 : 50; /* d2 and d3 are corner cases */
99
100 if (r_max < 1 || r_max < r_min)
101 {
102 LOG (llevError, "Calling random_roll with min=%d max=%d\n", r_min, r_max);
103 return r_min;
104 }
105
106 if (op->type == PLAYER)
107 {
108 int luck = op->stats.luck;
109
110 if (rndm (base) < min (10, abs (luck)))
111 {
112 //TODO: take luck into account
113 }
114 }
115
116 return rndm (r_min, r_max);
117}
118
119/*
120 * This is a 64 bit version of random_roll above. This is needed
121 * for exp loss calculations for players changing religions.
122 */
123sint64
124random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
125{
59 int omin, diff, luck, base, ran; 126 sint64 omin, diff, luck, ran;
127 int base;
60 128
61 omin = min; 129 omin = min;
62 diff = max - min + 1; 130 diff = max - min + 1;
63 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ 131 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
64 132
65 if (max < 1 || diff < 1) 133 if (max < 1 || diff < 1)
66 { 134 {
67 LOG (llevError, "Calling random_roll with min=%d max=%d\n", min, max); 135 LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
68 return (min); /* avoids a float exception */ 136 return (min); /* avoids a float exception */
69 } 137 }
70 138
71 ran = RANDOM (); 139 /*
140 * Make a call to get two 32 bit unsigned random numbers, and just to
141 * a little bitshifting.
142 */
143 ran = (sint64) rndm.next () ^ ((sint64) rndm.next () << 31);
72 144
73 if (op->type != PLAYER) 145 if (op->type != PLAYER)
74 return ((ran % diff) + min); 146 return ((ran % diff) + min);
75 147
76 luck = op->stats.luck; 148 luck = op->stats.luck;
77 if (RANDOM () % base < MIN (10, abs (luck))) 149 if (rndm (base) < MIN (10, abs (luck)))
78 { 150 {
79 /* we have a winner */ 151 /* we have a winner */
80 ((luck > 0) ? (luck = 1) : (luck = -1)); 152 ((luck > 0) ? (luck = 1) : (luck = -1));
81 diff -= luck; 153 diff -= luck;
82 if (diff < 1) 154 if (diff < 1)
83 return (omin); /*check again */ 155 return (omin); /*check again */
84 ((goodbad) ? (min += luck) : (diff)); 156 ((goodbad) ? (min += luck) : (diff));
85 157
86 return (MAX (omin, MIN (max, (ran % diff) + min))); 158 return (MAX (omin, MIN (max, (ran % diff) + min)));
87 } 159 }
88 return ((ran % diff) + min);
89}
90 160
91/*
92 * This is a 64 bit version of random_roll above. This is needed
93 * for exp loss calculations for players changing religions.
94 */
95
96sint64
97random_roll64 (sint64 min, sint64 max, const object *op, int goodbad)
98{
99 sint64 omin, diff, luck, ran;
100 int base;
101
102 omin = min;
103 diff = max - min + 1;
104 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
105
106 if (max < 1 || diff < 1)
107 {
108#ifndef WIN32
109 LOG (llevError, "Calling random_roll with min=%lld max=%lld\n", min, max);
110#else
111 LOG (llevError, "Calling random_roll with min=%I64d max=%I64d\n", min, max);
112#endif
113 return (min); /* avoids a float exception */
114 }
115
116 /* Don't know of a portable call to get 64 bit random values.
117 * So make a call to get two 32 bit random numbers, and just to
118 * a little byteshifting. Do make sure the first one is only
119 * 32 bit, so we don't get skewed results
120 */
121 ran = (RANDOM () & 0xffffffff) | ((sint64) RANDOM () << 32);
122
123 if (op->type != PLAYER)
124 return ((ran % diff) + min);
125
126 luck = op->stats.luck;
127 if (RANDOM () % base < MIN (10, abs (luck)))
128 {
129 /* we have a winner */
130 ((luck > 0) ? (luck = 1) : (luck = -1));
131 diff -= luck;
132 if (diff < 1)
133 return (omin); /*check again */
134 ((goodbad) ? (min += luck) : (diff));
135
136 return (MAX (omin, MIN (max, (ran % diff) + min)));
137 }
138 return ((ran % diff) + min); 161 return ((ran % diff) + min);
139} 162}
140 163
141/* 164/*
142 * Roll a number of dice (2d3, 4d6). Uses op to determine luck, 165 * Roll a number of dice (2d3, 4d6). Uses op to determine luck,
147 */ 170 */
148 171
149int 172int
150die_roll (int num, int size, const object *op, int goodbad) 173die_roll (int num, int size, const object *op, int goodbad)
151{ 174{
152 int min, diff, luck, total, i, gotlucky, base, ran; 175 int min, diff, luck, total, i, gotlucky, base;
153 176
154 diff = size; 177 diff = size;
155 min = 1; 178 min = 1;
156 luck = total = gotlucky = 0; 179 luck = total = gotlucky = 0;
157 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */ 180 ((diff > 2) ? (base = 20) : (base = 50)); /* d2 and d3 are corner cases */
164 if (op->type == PLAYER) 187 if (op->type == PLAYER)
165 luck = op->stats.luck; 188 luck = op->stats.luck;
166 189
167 for (i = 0; i < num; i++) 190 for (i = 0; i < num; i++)
168 { 191 {
169 if (RANDOM () % base < MIN (10, abs (luck)) && !gotlucky) 192 if (rndm (base) < MIN (10, abs (luck)) && !gotlucky)
170 { 193 {
171 /* we have a winner */ 194 /* we have a winner */
172 gotlucky++; 195 gotlucky++;
173 ((luck > 0) ? (luck = 1) : (luck = -1)); 196 ((luck > 0) ? (luck = 1) : (luck = -1));
174 diff -= luck; 197 diff -= luck;
175 if (diff < 1) 198 if (diff < 1)
176 return (num); /*check again */ 199 return (num); /*check again */
177 ((goodbad) ? (min += luck) : (diff)); 200 ((goodbad) ? (min += luck) : (diff));
178 ran = RANDOM ();
179 total += MAX (1, MIN (size, (ran % diff) + min)); 201 total += MAX (1, MIN (size, rndm (diff) + min));
180 } 202 }
181 else 203 else
182 {
183 total += RANDOM () % size + 1; 204 total += rndm (size) + 1;
184 }
185 } 205 }
206
186 return (total); 207 return total;
187} 208}
188 209
189/*
190 * Another convenience function. Returns a number between min and max.
191 * It is suggested one use these functions rather than RANDOM()%, as it
192 * would appear that a number of off-by-one-errors exist due to improper
193 * use of %. This should also prevent SIGFPE.
194 */
195
196int
197rndm (int min, int max)
198{
199 int diff;
200
201 diff = max - min + 1;
202 if (max < 1 || diff < 1)
203 return (min);
204
205 return (RANDOM () % diff + min);
206}
207
208/* decay and destroy persihable items in a map */ 210/* decay and destroy perishable items in a map */
209
210void 211void
211decay_objects (mapstruct *m) 212maptile::decay_objects ()
212{ 213{
213 int x, y, destroy; 214 if (!spaces)
214 object *op, *otmp;
215
216 if (m->unique)
217 return; 215 return;
218 216
219 for (x = 0; x < MAP_WIDTH (m); x++) 217 for (mapspace *ms = spaces + size (); ms-- > spaces; )
220 for (y = 0; y < MAP_HEIGHT (m); y++) 218 for (object *above, *op = ms->bot; op; op = above)
221 for (op = get_map_ob (m, x, y); op; op = otmp)
222 { 219 {
220 above = op->above;
221
223 destroy = 0; 222 bool destroy = 0;
224 otmp = op->above; 223
224 // do not decay anything above unique floor tiles (yet :)
225 if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE)) 225 if (QUERY_FLAG (op, FLAG_IS_FLOOR) && QUERY_FLAG (op, FLAG_UNIQUE))
226 break; 226 break;
227
227 if (QUERY_FLAG (op, FLAG_IS_FLOOR) || 228 if (QUERY_FLAG (op, FLAG_IS_FLOOR)
228 QUERY_FLAG (op, FLAG_OBJ_ORIGINAL) || 229 || QUERY_FLAG (op, FLAG_OBJ_ORIGINAL)
229 QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL) || 230 || QUERY_FLAG (op, FLAG_OBJ_SAVE_ON_OVL)
230 QUERY_FLAG (op, FLAG_UNIQUE) || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR) || QUERY_FLAG (op, FLAG_UNPAID) || IS_LIVE (op)) 231 || QUERY_FLAG (op, FLAG_UNIQUE)
231 continue; 232 || QUERY_FLAG (op, FLAG_OVERLAY_FLOOR)
232 /* otherwise, we decay and destroy */ 233 || QUERY_FLAG (op, FLAG_UNPAID)
233 if (IS_WEAPON (op)) 234 || op->is_alive ())
235 ; // do not decay
236 else if (op->is_weapon ())
234 { 237 {
235 op->stats.dam--; 238 op->stats.dam--;
236 if (op->stats.dam < 0) 239 if (op->stats.dam < 0)
237 destroy = 1; 240 destroy = 1;
238 } 241 }
239 else if (IS_ARMOR (op)) 242 else if (op->is_armor ())
240 { 243 {
241 op->stats.ac--; 244 op->stats.ac--;
242 if (op->stats.ac < 0) 245 if (op->stats.ac < 0)
243 destroy = 1; 246 destroy = 1;
244 } 247 }
245 else if (op->type == FOOD) 248 else if (op->type == FOOD)
246 { 249 {
247 op->stats.food -= rndm (5, 20); 250 op->stats.food -= rndm (5, 20);
248 if (op->stats.food < 0) 251 if (op->stats.food < 0)
249 destroy = 1; 252 destroy = 1;
250 } 253 }
251 else 254 else
252 { 255 {
253 if (op->material & M_PAPER || op->material & M_LEATHER || 256 int mat = op->materials;
254 op->material & M_WOOD || op->material & M_ORGANIC || op->material & M_CLOTH || op->material & M_LIQUID) 257
258 if (mat & M_PAPER
259 || mat & M_LEATHER
260 || mat & M_WOOD
261 || mat & M_ORGANIC
262 || mat & M_CLOTH
263 || mat & M_LIQUID
264 || (mat & M_IRON && rndm (1, 5) == 1)
265 || (mat & M_GLASS && rndm (1, 2) == 1)
266 || ((mat & M_STONE || mat & M_ADAMANT) && rndm (1, 10) == 1)
267 || ((mat & M_SOFT_METAL || mat & M_BONE) && rndm (1, 3) == 1)
268 || (mat & M_ICE && temp > 32))
255 destroy = 1; 269 destroy = 1;
256 if (op->material & M_IRON && rndm (1, 5) == 1)
257 destroy = 1;
258 if (op->material & M_GLASS && rndm (1, 2) == 1)
259 destroy = 1;
260 if ((op->material & M_STONE || op->material & M_ADAMANT) && rndm (1, 10) == 1)
261 destroy = 1;
262 if ((op->material & M_SOFT_METAL || op->material & M_BONE) && rndm (1, 3) == 1)
263 destroy = 1;
264 if (op->material & M_ICE && MAP_TEMP (m) > 32)
265 destroy = 1;
266 } 270 }
271
267 /* adjust overall chance below */ 272 /* adjust overall chance below */
268 if (destroy && rndm (0, 1)) 273 if (destroy && rndm (0, 1))
269 { 274 op->destroy ();
270 remove_ob (op);
271 free_object (op);
272 }
273 } 275 }
274} 276}
275 277
276/* convert materialname to materialtype_t */ 278/* convert materialname to materialtype_t */
277 279
278materialtype_t * 280materialtype_t *
279name_to_material (const char *name) 281name_to_material (const shstr &name)
280{ 282{
281 materialtype_t *mt, *nmt; 283 for (materialtype_t *mt = materialt; mt && mt->next; mt = mt->next)
282 284 if (name == mt->name)
283 mt = NULL;
284 for (nmt = materialt; nmt != NULL && nmt->next != NULL; nmt = nmt->next)
285 {
286 if (strcmp (name, nmt->name) == 0)
287 {
288 mt = nmt;
289 break;
290 }
291 }
292 return mt; 285 return mt;
286
287 return materialt;
293} 288}
294 289
295/* when doing transmutation of objects, we have to recheck the resistances, 290/* when doing transmutation of objects, we have to recheck the resistances,
296 * as some that did not apply previously, may apply now. 291 * as some that did not apply previously, may apply now.
297 */ 292 */
306 return; 301 return;
307 302
308 if (change->materialname != NULL && strcmp (op->materialname, change->materialname)) 303 if (change->materialname != NULL && strcmp (op->materialname, change->materialname))
309 return; 304 return;
310 305
311 if (!IS_ARMOR (op)) 306 if (!op->is_armor ())
312 return; 307 return;
313 308
314 mt = name_to_material (op->materialname); 309 mt = name_to_material (op->materialname);
315 if (!mt) 310 if (!mt)
316 { 311 {
346 341
347 if (nmt == NULL) 342 if (nmt == NULL)
348 { 343 {
349 lmt = NULL; 344 lmt = NULL;
350#ifndef NEW_MATERIAL_CODE 345#ifndef NEW_MATERIAL_CODE
351 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next) 346 for (mt = materialt; mt && mt->next; mt = mt->next)
352 { 347 {
353 if (op->material & mt->material) 348 if (op->materials & mt->material)
354 { 349 {
355 lmt = mt; 350 lmt = mt;
356 break; 351 break;
357 } 352 }
358 } 353 }
359 354
360#else 355#else
361 for (mt = materialt; mt != NULL && mt->next != NULL; mt = mt->next) 356 for (mt = materialt; mt && mt->next; mt = mt->next)
362 { 357 {
363 if (op->material & mt->material && rndm (1, 100) <= mt->chance && 358 if (op->materials & mt->material && rndm (1, 100) <= mt->chance &&
364 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0)) 359 difficulty >= mt->difficulty && (op->magic >= mt->magic || mt->magic == 0))
365 { 360 {
366 lmt = mt; 361 lmt = mt;
367 if (!(IS_WEAPON (op) || IS_ARMOR (op))) 362 if (!(op->is_weapon () || op->is_armor ()))
368 break; 363 break;
369 } 364 }
370 } 365 }
371#endif 366#endif
372 } 367 }
380#ifndef NEW_MATERIAL_CODE 375#ifndef NEW_MATERIAL_CODE
381 op->materialname = lmt->name; 376 op->materialname = lmt->name;
382 return; 377 return;
383#else 378#else
384 379
385 if (op->stats.dam && IS_WEAPON (op)) 380 if (op->stats.dam && op->is_weapon ())
386 { 381 {
387 op->stats.dam += lmt->damage; 382 op->stats.dam += lmt->damage;
388 if (op->stats.dam < 1) 383 if (op->stats.dam < 1)
389 op->stats.dam = 1; 384 op->stats.dam = 1;
390 } 385 }
386
391 if (op->stats.sp && op->type == BOW) 387 if (op->stats.sp && op->type == BOW)
392 op->stats.sp += lmt->sp; 388 op->stats.sp += lmt->sp;
393 if (op->stats.wc && IS_WEAPON (op)) 389 if (op->stats.wc && op->is_weapon ())
394 op->stats.wc += lmt->wc; 390 op->stats.wc += lmt->wc;
395 if (IS_ARMOR (op)) 391 if (op->is_armor ())
396 { 392 {
397 if (op->stats.ac) 393 if (op->stats.ac)
398 op->stats.ac += lmt->ac; 394 op->stats.ac += lmt->ac;
399 for (j = 0; j < NROFATTACKS; j++) 395 for (j = 0; j < NROFATTACKS; j++)
400 if (op->resist[j] != 0) 396 if (op->resist[j] != 0)
404 op->resist[j] = 100; 400 op->resist[j] = 100;
405 if (op->resist[j] < -100) 401 if (op->resist[j] < -100)
406 op->resist[j] = -100; 402 op->resist[j] = -100;
407 } 403 }
408 } 404 }
409 op->materialname = add_string (lmt->name); 405 op->materialname = lmt->name;
410 /* dont make it unstackable if it doesn't need to be */ 406 /* dont make it unstackable if it doesn't need to be */
411 if (IS_WEAPON (op) || IS_ARMOR (op)) 407 if (op->is_weapon () || op->is_armor ())
412 { 408 {
413 op->weight = (op->weight * lmt->weight) / 100; 409 op->weight = (op->weight * lmt->weight) / 100;
414 op->value = (op->value * lmt->value) / 100; 410 op->value = (op->value * lmt->value) / 100;
415 } 411 }
416#endif 412#endif
531 527
532 strncpy (tmp, input, MAX_BUF - 5); 528 strncpy (tmp, input, MAX_BUF - 5);
533 /*trim all trailing commas, spaces etc. */ 529 /*trim all trailing commas, spaces etc. */
534 for (i = strlen (tmp); !isalnum (tmp[i]) && i >= 0; i--) 530 for (i = strlen (tmp); !isalnum (tmp[i]) && i >= 0; i--)
535 tmp[i] = '\0'; 531 tmp[i] = '\0';
532
536 strcat (tmp, "."); 533 strcat (tmp, ".");
537 534
538 p = strrchr (tmp, ','); 535 p = strrchr (tmp, ',');
539 if (p) 536 if (p)
540 { 537 {
544 strcat (input, " and"); 541 strcat (input, " and");
545 strcat (input, p); 542 strcat (input, p);
546 } 543 }
547 else 544 else
548 strcpy (input, tmp); 545 strcpy (input, tmp);
546
549 return; 547 return;
550} 548}
551 549
550/////////////////////////////////////////////////////////////////////////////
551
552void * 552void
553 zero_initialised::operator 553fork_abort (const char *msg)
554new (size_t s)
555{ 554{
556 //return calloc (1, s); 555 if (!fork ())
557 return g_slice_alloc0 (s); 556 {
558} 557 signal (SIGABRT, SIG_DFL);
558 abort ();
559 }
559 560
560void * 561 LOG (llevError, "fork abort: %s\n", msg);
561 zero_initialised::operator
562new[] (size_t s)
563{
564 //return calloc (1, s);
565 return g_slice_alloc0 (s);
566} 562}
567 563
568void 564void *salloc_ (int n) throw (std::bad_alloc)
569 zero_initialised::operator
570delete (void *p, size_t s)
571{ 565{
572 //free (p); return; 566#ifdef PREFER_MALLOC
573 g_slice_free1 (s, p); 567 void *ptr = malloc (n);
574} 568#else
569 void *ptr = g_slice_alloc (n);
570#endif
575 571
576void 572 if (!ptr)
577 zero_initialised::operator 573 throw std::bad_alloc ();
578delete[] (void *p, size_t s) 574
579{ 575 return ptr;
580 //free (p); return;
581 g_slice_free1 (s, p);
582} 576}
577
578void *salloc_ (int n, void *src) throw (std::bad_alloc)
579{
580 void *ptr = salloc_ (n);
581
582 if (src)
583 memcpy (ptr, src, n);
584 else
585 memset (ptr, 0, n);
586
587 return ptr;
588}
589
590void assign (char *dst, const char *src, int maxlen)
591{
592 if (!src)
593 src = "";
594
595 int len = strlen (src);
596
597 if (len >= maxlen - 1)
598 {
599 if (maxlen <= 4)
600 {
601 memset (dst, '.', maxlen - 1);
602 dst [maxlen - 1] = 0;
603 }
604 else
605 {
606 memcpy (dst, src, maxlen - 4);
607 memcpy (dst + maxlen - 4, "...", 4);
608 }
609 }
610 else
611 memcpy (dst, src, len + 1);
612}
613
614tstamp now ()
615{
616 struct timeval tv;
617
618 gettimeofday (&tv, 0);
619 return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
620}
621
622int
623similar_direction (int a, int b)
624{
625 if (!a || !b)
626 return 0;
627
628 int diff = (b - a) & 7;
629 return diff <= 1 || diff >= 7;
630}
631
632/* crc32 0xdebb20e3 table and supplementary functions. */
633extern const uint32_t crc_32_tab[256] =
634{
635 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
636 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
637 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
638 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
639 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
640 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
641 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
642 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
643 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
644 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
645 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
646 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
647 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
648 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
649 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
650 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
651 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
652 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
653 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
654 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
655 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
656 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
657 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
658 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
659 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
660 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
661 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
662 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
663 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
664 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
665 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
666 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
667 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
668 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
669 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
670 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
671 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
672 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
673 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
674 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
675 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
676 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
677 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
678 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
679 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
680 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
681 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
682 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
683 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
684 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
685 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
686 0x2d02ef8dL
687};
688
689

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