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7921925c | 1 | /* Primitive operations on Lisp data types for GNU Emacs Lisp interpreter. |
f58b3686 | 2 | Copyright (C) 1985, 1986, 1988, 1992 Free Software Foundation, Inc. |
7921925c JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <signal.h> | |
22 | ||
23 | #include "config.h" | |
24 | #include "lisp.h" | |
29eab336 | 25 | #include "puresize.h" |
7921925c JB |
26 | |
27 | #ifndef standalone | |
28 | #include "buffer.h" | |
29 | #endif | |
30 | ||
a44804c2 | 31 | #include "syssignal.h" |
fb8e9847 | 32 | |
7921925c JB |
33 | #ifdef LISP_FLOAT_TYPE |
34 | #include <math.h> | |
35 | #endif /* LISP_FLOAT_TYPE */ | |
36 | ||
37 | Lisp_Object Qnil, Qt, Qquote, Qlambda, Qsubr, Qunbound; | |
38 | Lisp_Object Qerror_conditions, Qerror_message, Qtop_level; | |
39 | Lisp_Object Qerror, Qquit, Qwrong_type_argument, Qargs_out_of_range; | |
ffd56f97 | 40 | Lisp_Object Qvoid_variable, Qvoid_function, Qcyclic_function_indirection; |
7921925c JB |
41 | Lisp_Object Qsetting_constant, Qinvalid_read_syntax; |
42 | Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch; | |
43 | Lisp_Object Qend_of_file, Qarith_error; | |
44 | Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only; | |
45 | Lisp_Object Qintegerp, Qnatnump, Qsymbolp, Qlistp, Qconsp; | |
46 | Lisp_Object Qstringp, Qarrayp, Qsequencep, Qbufferp; | |
47 | Lisp_Object Qchar_or_string_p, Qmarkerp, Qinteger_or_marker_p, Qvectorp; | |
48 | Lisp_Object Qboundp, Qfboundp; | |
49 | Lisp_Object Qcdr; | |
50 | ||
51 | #ifdef LISP_FLOAT_TYPE | |
464f8898 | 52 | Lisp_Object Qfloatp; |
7921925c JB |
53 | Lisp_Object Qnumberp, Qnumber_or_marker_p; |
54 | #endif | |
55 | ||
56 | static Lisp_Object swap_in_symval_forwarding (); | |
57 | ||
58 | Lisp_Object | |
59 | wrong_type_argument (predicate, value) | |
60 | register Lisp_Object predicate, value; | |
61 | { | |
62 | register Lisp_Object tem; | |
63 | do | |
64 | { | |
65 | if (!EQ (Vmocklisp_arguments, Qt)) | |
66 | { | |
67 | if (XTYPE (value) == Lisp_String && | |
68 | (EQ (predicate, Qintegerp) || EQ (predicate, Qinteger_or_marker_p))) | |
69 | return Fstring_to_int (value, Qt); | |
70 | if (XTYPE (value) == Lisp_Int && EQ (predicate, Qstringp)) | |
71 | return Fint_to_string (value); | |
72 | } | |
73 | value = Fsignal (Qwrong_type_argument, Fcons (predicate, Fcons (value, Qnil))); | |
74 | tem = call1 (predicate, value); | |
75 | } | |
a33ef3ab | 76 | while (NILP (tem)); |
7921925c JB |
77 | return value; |
78 | } | |
79 | ||
80 | pure_write_error () | |
81 | { | |
82 | error ("Attempt to modify read-only object"); | |
83 | } | |
84 | ||
85 | void | |
86 | args_out_of_range (a1, a2) | |
87 | Lisp_Object a1, a2; | |
88 | { | |
89 | while (1) | |
90 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Qnil))); | |
91 | } | |
92 | ||
93 | void | |
94 | args_out_of_range_3 (a1, a2, a3) | |
95 | Lisp_Object a1, a2, a3; | |
96 | { | |
97 | while (1) | |
98 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Fcons (a3, Qnil)))); | |
99 | } | |
100 | ||
101 | Lisp_Object | |
102 | make_number (num) | |
103 | int num; | |
104 | { | |
105 | register Lisp_Object val; | |
106 | XSET (val, Lisp_Int, num); | |
107 | return val; | |
108 | } | |
109 | ||
110 | /* On some machines, XINT needs a temporary location. | |
111 | Here it is, in case it is needed. */ | |
112 | ||
113 | int sign_extend_temp; | |
114 | ||
115 | /* On a few machines, XINT can only be done by calling this. */ | |
116 | ||
117 | int | |
118 | sign_extend_lisp_int (num) | |
119 | int num; | |
120 | { | |
121 | if (num & (1 << (VALBITS - 1))) | |
122 | return num | ((-1) << VALBITS); | |
123 | else | |
124 | return num & ((1 << VALBITS) - 1); | |
125 | } | |
126 | \f | |
127 | /* Data type predicates */ | |
128 | ||
129 | DEFUN ("eq", Feq, Seq, 2, 2, 0, | |
130 | "T if the two args are the same Lisp object.") | |
131 | (obj1, obj2) | |
132 | Lisp_Object obj1, obj2; | |
133 | { | |
134 | if (EQ (obj1, obj2)) | |
135 | return Qt; | |
136 | return Qnil; | |
137 | } | |
138 | ||
139 | DEFUN ("null", Fnull, Snull, 1, 1, 0, "T if OBJECT is nil.") | |
140 | (obj) | |
141 | Lisp_Object obj; | |
142 | { | |
a33ef3ab | 143 | if (NILP (obj)) |
7921925c JB |
144 | return Qt; |
145 | return Qnil; | |
146 | } | |
147 | ||
148 | DEFUN ("consp", Fconsp, Sconsp, 1, 1, 0, "T if OBJECT is a cons cell.") | |
149 | (obj) | |
150 | Lisp_Object obj; | |
151 | { | |
152 | if (XTYPE (obj) == Lisp_Cons) | |
153 | return Qt; | |
154 | return Qnil; | |
155 | } | |
156 | ||
157 | DEFUN ("atom", Fatom, Satom, 1, 1, 0, "T if OBJECT is not a cons cell. This includes nil.") | |
158 | (obj) | |
159 | Lisp_Object obj; | |
160 | { | |
161 | if (XTYPE (obj) == Lisp_Cons) | |
162 | return Qnil; | |
163 | return Qt; | |
164 | } | |
165 | ||
166 | DEFUN ("listp", Flistp, Slistp, 1, 1, 0, "T if OBJECT is a list. This includes nil.") | |
167 | (obj) | |
168 | Lisp_Object obj; | |
169 | { | |
a33ef3ab | 170 | if (XTYPE (obj) == Lisp_Cons || NILP (obj)) |
7921925c JB |
171 | return Qt; |
172 | return Qnil; | |
173 | } | |
174 | ||
175 | DEFUN ("nlistp", Fnlistp, Snlistp, 1, 1, 0, "T if OBJECT is not a list. Lists include nil.") | |
176 | (obj) | |
177 | Lisp_Object obj; | |
178 | { | |
a33ef3ab | 179 | if (XTYPE (obj) == Lisp_Cons || NILP (obj)) |
7921925c JB |
180 | return Qnil; |
181 | return Qt; | |
182 | } | |
183 | \f | |
184 | DEFUN ("symbolp", Fsymbolp, Ssymbolp, 1, 1, 0, "T if OBJECT is a symbol.") | |
185 | (obj) | |
186 | Lisp_Object obj; | |
187 | { | |
188 | if (XTYPE (obj) == Lisp_Symbol) | |
189 | return Qt; | |
190 | return Qnil; | |
191 | } | |
192 | ||
193 | DEFUN ("vectorp", Fvectorp, Svectorp, 1, 1, 0, "T if OBJECT is a vector.") | |
194 | (obj) | |
195 | Lisp_Object obj; | |
196 | { | |
197 | if (XTYPE (obj) == Lisp_Vector) | |
198 | return Qt; | |
199 | return Qnil; | |
200 | } | |
201 | ||
202 | DEFUN ("stringp", Fstringp, Sstringp, 1, 1, 0, "T if OBJECT is a string.") | |
203 | (obj) | |
204 | Lisp_Object obj; | |
205 | { | |
206 | if (XTYPE (obj) == Lisp_String) | |
207 | return Qt; | |
208 | return Qnil; | |
209 | } | |
210 | ||
211 | DEFUN ("arrayp", Farrayp, Sarrayp, 1, 1, 0, "T if OBJECT is an array (string or vector).") | |
212 | (obj) | |
213 | Lisp_Object obj; | |
214 | { | |
215 | if (XTYPE (obj) == Lisp_Vector || XTYPE (obj) == Lisp_String) | |
216 | return Qt; | |
217 | return Qnil; | |
218 | } | |
219 | ||
220 | DEFUN ("sequencep", Fsequencep, Ssequencep, 1, 1, 0, | |
221 | "T if OBJECT is a sequence (list or array).") | |
222 | (obj) | |
223 | register Lisp_Object obj; | |
224 | { | |
a33ef3ab | 225 | if (CONSP (obj) || NILP (obj) || |
7921925c JB |
226 | XTYPE (obj) == Lisp_Vector || XTYPE (obj) == Lisp_String) |
227 | return Qt; | |
228 | return Qnil; | |
229 | } | |
230 | ||
231 | DEFUN ("bufferp", Fbufferp, Sbufferp, 1, 1, 0, "T if OBJECT is an editor buffer.") | |
232 | (obj) | |
233 | Lisp_Object obj; | |
234 | { | |
235 | if (XTYPE (obj) == Lisp_Buffer) | |
236 | return Qt; | |
237 | return Qnil; | |
238 | } | |
239 | ||
240 | DEFUN ("markerp", Fmarkerp, Smarkerp, 1, 1, 0, "T if OBJECT is a marker (editor pointer).") | |
241 | (obj) | |
242 | Lisp_Object obj; | |
243 | { | |
244 | if (XTYPE (obj) == Lisp_Marker) | |
245 | return Qt; | |
246 | return Qnil; | |
247 | } | |
248 | ||
7921925c JB |
249 | DEFUN ("subrp", Fsubrp, Ssubrp, 1, 1, 0, "T if OBJECT is a built-in function.") |
250 | (obj) | |
251 | Lisp_Object obj; | |
252 | { | |
253 | if (XTYPE (obj) == Lisp_Subr) | |
254 | return Qt; | |
255 | return Qnil; | |
256 | } | |
257 | ||
258 | DEFUN ("compiled-function-p", Fcompiled_function_p, Scompiled_function_p, | |
259 | 1, 1, 0, "T if OBJECT is a compiled function object.") | |
260 | (obj) | |
261 | Lisp_Object obj; | |
262 | { | |
263 | if (XTYPE (obj) == Lisp_Compiled) | |
264 | return Qt; | |
265 | return Qnil; | |
266 | } | |
267 | ||
268 | DEFUN ("char-or-string-p", Fchar_or_string_p, Schar_or_string_p, 1, 1, 0, "T if OBJECT is a character (a number) or a string.") | |
269 | (obj) | |
270 | register Lisp_Object obj; | |
271 | { | |
272 | if (XTYPE (obj) == Lisp_Int || XTYPE (obj) == Lisp_String) | |
273 | return Qt; | |
274 | return Qnil; | |
275 | } | |
276 | \f | |
277 | DEFUN ("integerp", Fintegerp, Sintegerp, 1, 1, 0, "T if OBJECT is a number.") | |
278 | (obj) | |
279 | Lisp_Object obj; | |
280 | { | |
281 | if (XTYPE (obj) == Lisp_Int) | |
282 | return Qt; | |
283 | return Qnil; | |
284 | } | |
285 | ||
464f8898 RS |
286 | DEFUN ("integer-or-marker-p", Finteger_or_marker_p, Sinteger_or_marker_p, 1, 1, 0, |
287 | "T if OBJECT is an integer or a marker (editor pointer).") | |
7921925c | 288 | (obj) |
464f8898 | 289 | register Lisp_Object obj; |
7921925c | 290 | { |
464f8898 | 291 | if (XTYPE (obj) == Lisp_Marker || XTYPE (obj) == Lisp_Int) |
7921925c JB |
292 | return Qt; |
293 | return Qnil; | |
294 | } | |
295 | ||
464f8898 | 296 | DEFUN ("natnump", Fnatnump, Snatnump, 1, 1, 0, "T if OBJECT is a nonnegative number.") |
7921925c JB |
297 | (obj) |
298 | Lisp_Object obj; | |
299 | { | |
464f8898 | 300 | if (XTYPE (obj) == Lisp_Int && XINT (obj) >= 0) |
7921925c JB |
301 | return Qt; |
302 | return Qnil; | |
303 | } | |
304 | ||
305 | DEFUN ("numberp", Fnumberp, Snumberp, 1, 1, 0, | |
306 | "T if OBJECT is a number (floating point or integer).") | |
307 | (obj) | |
308 | Lisp_Object obj; | |
309 | { | |
464f8898 RS |
310 | if (0 |
311 | #ifdef LISP_FLOAT_TYPE | |
312 | || XTYPE (obj) == Lisp_Float | |
313 | #endif | |
314 | || XTYPE (obj) == Lisp_Int) | |
7921925c JB |
315 | return Qt; |
316 | return Qnil; | |
317 | } | |
318 | ||
319 | DEFUN ("number-or-marker-p", Fnumber_or_marker_p, | |
320 | Snumber_or_marker_p, 1, 1, 0, | |
321 | "T if OBJECT is a number or a marker.") | |
322 | (obj) | |
323 | Lisp_Object obj; | |
324 | { | |
464f8898 RS |
325 | if (XTYPE (obj) == Lisp_Int |
326 | #ifdef LISP_FLOAT_TYPE | |
327 | || XTYPE (obj) == Lisp_Float | |
328 | #endif | |
7921925c JB |
329 | || XTYPE (obj) == Lisp_Marker) |
330 | return Qt; | |
331 | return Qnil; | |
332 | } | |
464f8898 RS |
333 | |
334 | #ifdef LISP_FLOAT_TYPE | |
335 | DEFUN ("floatp", Ffloatp, Sfloatp, 1, 1, 0, | |
336 | "T if OBJECT is a floating point number.") | |
337 | (obj) | |
338 | Lisp_Object obj; | |
339 | { | |
340 | if (XTYPE (obj) == Lisp_Float) | |
341 | return Qt; | |
342 | return Qnil; | |
343 | } | |
7921925c JB |
344 | #endif /* LISP_FLOAT_TYPE */ |
345 | \f | |
346 | /* Extract and set components of lists */ | |
347 | ||
348 | DEFUN ("car", Fcar, Scar, 1, 1, 0, | |
349 | "Return the car of CONSCELL. If arg is nil, return nil.\n\ | |
350 | Error if arg is not nil and not a cons cell. See also `car-safe'.") | |
351 | (list) | |
352 | register Lisp_Object list; | |
353 | { | |
354 | while (1) | |
355 | { | |
356 | if (XTYPE (list) == Lisp_Cons) | |
357 | return XCONS (list)->car; | |
358 | else if (EQ (list, Qnil)) | |
359 | return Qnil; | |
360 | else | |
361 | list = wrong_type_argument (Qlistp, list); | |
362 | } | |
363 | } | |
364 | ||
365 | DEFUN ("car-safe", Fcar_safe, Scar_safe, 1, 1, 0, | |
366 | "Return the car of OBJECT if it is a cons cell, or else nil.") | |
367 | (object) | |
368 | Lisp_Object object; | |
369 | { | |
370 | if (XTYPE (object) == Lisp_Cons) | |
371 | return XCONS (object)->car; | |
372 | else | |
373 | return Qnil; | |
374 | } | |
375 | ||
376 | DEFUN ("cdr", Fcdr, Scdr, 1, 1, 0, | |
377 | "Return the cdr of CONSCELL. If arg is nil, return nil.\n\ | |
378 | Error if arg is not nil and not a cons cell. See also `cdr-safe'.") | |
379 | ||
380 | (list) | |
381 | register Lisp_Object list; | |
382 | { | |
383 | while (1) | |
384 | { | |
385 | if (XTYPE (list) == Lisp_Cons) | |
386 | return XCONS (list)->cdr; | |
387 | else if (EQ (list, Qnil)) | |
388 | return Qnil; | |
389 | else | |
390 | list = wrong_type_argument (Qlistp, list); | |
391 | } | |
392 | } | |
393 | ||
394 | DEFUN ("cdr-safe", Fcdr_safe, Scdr_safe, 1, 1, 0, | |
395 | "Return the cdr of OBJECT if it is a cons cell, or else nil.") | |
396 | (object) | |
397 | Lisp_Object object; | |
398 | { | |
399 | if (XTYPE (object) == Lisp_Cons) | |
400 | return XCONS (object)->cdr; | |
401 | else | |
402 | return Qnil; | |
403 | } | |
404 | ||
405 | DEFUN ("setcar", Fsetcar, Ssetcar, 2, 2, 0, | |
406 | "Set the car of CONSCELL to be NEWCAR. Returns NEWCAR.") | |
407 | (cell, newcar) | |
408 | register Lisp_Object cell, newcar; | |
409 | { | |
410 | if (XTYPE (cell) != Lisp_Cons) | |
411 | cell = wrong_type_argument (Qconsp, cell); | |
412 | ||
413 | CHECK_IMPURE (cell); | |
414 | XCONS (cell)->car = newcar; | |
415 | return newcar; | |
416 | } | |
417 | ||
418 | DEFUN ("setcdr", Fsetcdr, Ssetcdr, 2, 2, 0, | |
419 | "Set the cdr of CONSCELL to be NEWCDR. Returns NEWCDR.") | |
420 | (cell, newcdr) | |
421 | register Lisp_Object cell, newcdr; | |
422 | { | |
423 | if (XTYPE (cell) != Lisp_Cons) | |
424 | cell = wrong_type_argument (Qconsp, cell); | |
425 | ||
426 | CHECK_IMPURE (cell); | |
427 | XCONS (cell)->cdr = newcdr; | |
428 | return newcdr; | |
429 | } | |
430 | \f | |
431 | /* Extract and set components of symbols */ | |
432 | ||
433 | DEFUN ("boundp", Fboundp, Sboundp, 1, 1, 0, "T if SYMBOL's value is not void.") | |
434 | (sym) | |
435 | register Lisp_Object sym; | |
436 | { | |
437 | Lisp_Object valcontents; | |
438 | CHECK_SYMBOL (sym, 0); | |
439 | ||
440 | valcontents = XSYMBOL (sym)->value; | |
441 | ||
442 | #ifdef SWITCH_ENUM_BUG | |
443 | switch ((int) XTYPE (valcontents)) | |
444 | #else | |
445 | switch (XTYPE (valcontents)) | |
446 | #endif | |
447 | { | |
448 | case Lisp_Buffer_Local_Value: | |
449 | case Lisp_Some_Buffer_Local_Value: | |
450 | valcontents = swap_in_symval_forwarding (sym, valcontents); | |
451 | } | |
452 | ||
453 | return (XTYPE (valcontents) == Lisp_Void || EQ (valcontents, Qunbound) | |
454 | ? Qnil : Qt); | |
455 | } | |
456 | ||
457 | DEFUN ("fboundp", Ffboundp, Sfboundp, 1, 1, 0, "T if SYMBOL's function definition is not void.") | |
458 | (sym) | |
459 | register Lisp_Object sym; | |
460 | { | |
461 | CHECK_SYMBOL (sym, 0); | |
462 | return (XTYPE (XSYMBOL (sym)->function) == Lisp_Void | |
463 | || EQ (XSYMBOL (sym)->function, Qunbound)) | |
464 | ? Qnil : Qt; | |
465 | } | |
466 | ||
467 | DEFUN ("makunbound", Fmakunbound, Smakunbound, 1, 1, 0, "Make SYMBOL's value be void.") | |
468 | (sym) | |
469 | register Lisp_Object sym; | |
470 | { | |
471 | CHECK_SYMBOL (sym, 0); | |
a33ef3ab | 472 | if (NILP (sym) || EQ (sym, Qt)) |
7921925c JB |
473 | return Fsignal (Qsetting_constant, Fcons (sym, Qnil)); |
474 | Fset (sym, Qunbound); | |
475 | return sym; | |
476 | } | |
477 | ||
478 | DEFUN ("fmakunbound", Ffmakunbound, Sfmakunbound, 1, 1, 0, "Make SYMBOL's function definition be void.") | |
479 | (sym) | |
480 | register Lisp_Object sym; | |
481 | { | |
482 | CHECK_SYMBOL (sym, 0); | |
483 | XSYMBOL (sym)->function = Qunbound; | |
484 | return sym; | |
485 | } | |
486 | ||
487 | DEFUN ("symbol-function", Fsymbol_function, Ssymbol_function, 1, 1, 0, | |
488 | "Return SYMBOL's function definition. Error if that is void.") | |
ffd56f97 JB |
489 | (symbol) |
490 | register Lisp_Object symbol; | |
7921925c | 491 | { |
ffd56f97 JB |
492 | CHECK_SYMBOL (symbol, 0); |
493 | if (EQ (XSYMBOL (symbol)->function, Qunbound)) | |
494 | return Fsignal (Qvoid_function, Fcons (symbol, Qnil)); | |
495 | return XSYMBOL (symbol)->function; | |
7921925c JB |
496 | } |
497 | ||
498 | DEFUN ("symbol-plist", Fsymbol_plist, Ssymbol_plist, 1, 1, 0, "Return SYMBOL's property list.") | |
499 | (sym) | |
500 | register Lisp_Object sym; | |
501 | { | |
502 | CHECK_SYMBOL (sym, 0); | |
503 | return XSYMBOL (sym)->plist; | |
504 | } | |
505 | ||
506 | DEFUN ("symbol-name", Fsymbol_name, Ssymbol_name, 1, 1, 0, "Return SYMBOL's name, a string.") | |
507 | (sym) | |
508 | register Lisp_Object sym; | |
509 | { | |
510 | register Lisp_Object name; | |
511 | ||
512 | CHECK_SYMBOL (sym, 0); | |
513 | XSET (name, Lisp_String, XSYMBOL (sym)->name); | |
514 | return name; | |
515 | } | |
516 | ||
517 | DEFUN ("fset", Ffset, Sfset, 2, 2, 0, | |
518 | "Set SYMBOL's function definition to NEWVAL, and return NEWVAL.") | |
519 | (sym, newdef) | |
520 | register Lisp_Object sym, newdef; | |
521 | { | |
522 | CHECK_SYMBOL (sym, 0); | |
a33ef3ab | 523 | if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (sym)->function, Qunbound)) |
7921925c JB |
524 | Vautoload_queue = Fcons (Fcons (sym, XSYMBOL (sym)->function), |
525 | Vautoload_queue); | |
526 | XSYMBOL (sym)->function = newdef; | |
527 | return newdef; | |
528 | } | |
529 | ||
530 | DEFUN ("setplist", Fsetplist, Ssetplist, 2, 2, 0, | |
531 | "Set SYMBOL's property list to NEWVAL, and return NEWVAL.") | |
532 | (sym, newplist) | |
533 | register Lisp_Object sym, newplist; | |
534 | { | |
535 | CHECK_SYMBOL (sym, 0); | |
536 | XSYMBOL (sym)->plist = newplist; | |
537 | return newplist; | |
538 | } | |
ffd56f97 | 539 | |
7921925c JB |
540 | \f |
541 | /* Getting and setting values of symbols */ | |
542 | ||
543 | /* Given the raw contents of a symbol value cell, | |
544 | return the Lisp value of the symbol. | |
545 | This does not handle buffer-local variables; use | |
546 | swap_in_symval_forwarding for that. */ | |
547 | ||
548 | Lisp_Object | |
549 | do_symval_forwarding (valcontents) | |
550 | register Lisp_Object valcontents; | |
551 | { | |
552 | register Lisp_Object val; | |
553 | #ifdef SWITCH_ENUM_BUG | |
554 | switch ((int) XTYPE (valcontents)) | |
555 | #else | |
556 | switch (XTYPE (valcontents)) | |
557 | #endif | |
558 | { | |
559 | case Lisp_Intfwd: | |
560 | XSET (val, Lisp_Int, *XINTPTR (valcontents)); | |
561 | return val; | |
562 | ||
563 | case Lisp_Boolfwd: | |
564 | if (*XINTPTR (valcontents)) | |
565 | return Qt; | |
566 | return Qnil; | |
567 | ||
568 | case Lisp_Objfwd: | |
569 | return *XOBJFWD (valcontents); | |
570 | ||
571 | case Lisp_Buffer_Objfwd: | |
572 | return *(Lisp_Object *)(XUINT (valcontents) + (char *)current_buffer); | |
573 | } | |
574 | return valcontents; | |
575 | } | |
576 | ||
577 | /* Store NEWVAL into SYM, where VALCONTENTS is found in the value cell | |
578 | of SYM. If SYM is buffer-local, VALCONTENTS should be the | |
579 | buffer-independent contents of the value cell: forwarded just one | |
580 | step past the buffer-localness. */ | |
581 | ||
582 | void | |
583 | store_symval_forwarding (sym, valcontents, newval) | |
584 | Lisp_Object sym; | |
585 | register Lisp_Object valcontents, newval; | |
586 | { | |
587 | #ifdef SWITCH_ENUM_BUG | |
588 | switch ((int) XTYPE (valcontents)) | |
589 | #else | |
590 | switch (XTYPE (valcontents)) | |
591 | #endif | |
592 | { | |
593 | case Lisp_Intfwd: | |
594 | CHECK_NUMBER (newval, 1); | |
595 | *XINTPTR (valcontents) = XINT (newval); | |
596 | break; | |
597 | ||
598 | case Lisp_Boolfwd: | |
a33ef3ab | 599 | *XINTPTR (valcontents) = NILP(newval) ? 0 : 1; |
7921925c JB |
600 | break; |
601 | ||
602 | case Lisp_Objfwd: | |
603 | *XOBJFWD (valcontents) = newval; | |
604 | break; | |
605 | ||
606 | case Lisp_Buffer_Objfwd: | |
bc540f9f JB |
607 | { |
608 | unsigned int offset = XUINT (valcontents); | |
609 | Lisp_Object type = | |
610 | *(Lisp_Object *)(offset + (char *)&buffer_local_types); | |
611 | ||
612 | if (! NILP (type) && ! NILP (newval) | |
613 | && XTYPE (newval) != XINT (type)) | |
614 | buffer_slot_type_mismatch (valcontents, newval); | |
615 | ||
616 | *(Lisp_Object *)(XUINT (valcontents) + (char *)current_buffer) | |
617 | = newval; | |
618 | break; | |
619 | } | |
7921925c JB |
620 | |
621 | default: | |
622 | valcontents = XSYMBOL (sym)->value; | |
623 | if (XTYPE (valcontents) == Lisp_Buffer_Local_Value | |
624 | || XTYPE (valcontents) == Lisp_Some_Buffer_Local_Value) | |
625 | XCONS (XSYMBOL (sym)->value)->car = newval; | |
626 | else | |
627 | XSYMBOL (sym)->value = newval; | |
628 | } | |
629 | } | |
630 | ||
631 | /* Set up the buffer-local symbol SYM for validity in the current | |
632 | buffer. VALCONTENTS is the contents of its value cell. | |
633 | Return the value forwarded one step past the buffer-local indicator. */ | |
634 | ||
635 | static Lisp_Object | |
636 | swap_in_symval_forwarding (sym, valcontents) | |
637 | Lisp_Object sym, valcontents; | |
638 | { | |
639 | /* valcontents is a list | |
640 | (REALVALUE BUFFER CURRENT-ALIST-ELEMENT . DEFAULT-VALUE)). | |
641 | ||
642 | CURRENT-ALIST-ELEMENT is a pointer to an element of BUFFER's | |
643 | local_var_alist, that being the element whose car is this variable. | |
644 | Or it can be a pointer to the (CURRENT-ALIST-ELEMENT . DEFAULT-VALUE), if BUFFER | |
645 | does not have an element in its alist for this variable. | |
646 | ||
647 | If the current buffer is not BUFFER, we store the current REALVALUE value into | |
648 | CURRENT-ALIST-ELEMENT, then find the appropriate alist element for | |
649 | the buffer now current and set up CURRENT-ALIST-ELEMENT. | |
650 | Then we set REALVALUE out of that element, and store into BUFFER. | |
651 | Note that REALVALUE can be a forwarding pointer. */ | |
652 | ||
653 | register Lisp_Object tem1; | |
654 | tem1 = XCONS (XCONS (valcontents)->cdr)->car; | |
655 | ||
a33ef3ab | 656 | if (NILP (tem1) || current_buffer != XBUFFER (tem1)) |
7921925c JB |
657 | { |
658 | tem1 = XCONS (XCONS (XCONS (valcontents)->cdr)->cdr)->car; | |
659 | Fsetcdr (tem1, do_symval_forwarding (XCONS (valcontents)->car)); | |
660 | tem1 = assq_no_quit (sym, current_buffer->local_var_alist); | |
a33ef3ab | 661 | if (NILP (tem1)) |
7921925c JB |
662 | tem1 = XCONS (XCONS (valcontents)->cdr)->cdr; |
663 | XCONS (XCONS (XCONS (valcontents)->cdr)->cdr)->car = tem1; | |
664 | XSET (XCONS (XCONS (valcontents)->cdr)->car, Lisp_Buffer, current_buffer); | |
665 | store_symval_forwarding (sym, XCONS (valcontents)->car, Fcdr (tem1)); | |
666 | } | |
667 | return XCONS (valcontents)->car; | |
668 | } | |
669 | \f | |
14e76af9 JB |
670 | /* Find the value of a symbol, returning Qunbound if it's not bound. |
671 | This is helpful for code which just wants to get a variable's value | |
672 | if it has one, without signalling an error. | |
673 | Note that it must not be possible to quit | |
674 | within this function. Great care is required for this. */ | |
7921925c | 675 | |
14e76af9 JB |
676 | Lisp_Object |
677 | find_symbol_value (sym) | |
7921925c JB |
678 | Lisp_Object sym; |
679 | { | |
680 | register Lisp_Object valcontents, tem1; | |
681 | register Lisp_Object val; | |
682 | CHECK_SYMBOL (sym, 0); | |
683 | valcontents = XSYMBOL (sym)->value; | |
684 | ||
685 | retry: | |
686 | #ifdef SWITCH_ENUM_BUG | |
687 | switch ((int) XTYPE (valcontents)) | |
688 | #else | |
689 | switch (XTYPE (valcontents)) | |
690 | #endif | |
691 | { | |
692 | case Lisp_Buffer_Local_Value: | |
693 | case Lisp_Some_Buffer_Local_Value: | |
694 | valcontents = swap_in_symval_forwarding (sym, valcontents); | |
695 | goto retry; | |
696 | ||
697 | case Lisp_Intfwd: | |
698 | XSET (val, Lisp_Int, *XINTPTR (valcontents)); | |
699 | return val; | |
700 | ||
701 | case Lisp_Boolfwd: | |
702 | if (*XINTPTR (valcontents)) | |
703 | return Qt; | |
704 | return Qnil; | |
705 | ||
706 | case Lisp_Objfwd: | |
707 | return *XOBJFWD (valcontents); | |
708 | ||
709 | case Lisp_Buffer_Objfwd: | |
710 | return *(Lisp_Object *)(XUINT (valcontents) + (char *)current_buffer); | |
711 | ||
7921925c | 712 | case Lisp_Void: |
14e76af9 | 713 | return Qunbound; |
7921925c JB |
714 | } |
715 | ||
716 | return valcontents; | |
717 | } | |
718 | ||
14e76af9 JB |
719 | DEFUN ("symbol-value", Fsymbol_value, Ssymbol_value, 1, 1, 0, |
720 | "Return SYMBOL's value. Error if that is void.") | |
721 | (sym) | |
722 | Lisp_Object sym; | |
723 | { | |
724 | Lisp_Object val = find_symbol_value (sym); | |
725 | ||
726 | if (EQ (val, Qunbound)) | |
727 | return Fsignal (Qvoid_variable, Fcons (sym, Qnil)); | |
728 | else | |
729 | return val; | |
730 | } | |
731 | ||
7921925c JB |
732 | DEFUN ("set", Fset, Sset, 2, 2, 0, |
733 | "Set SYMBOL's value to NEWVAL, and return NEWVAL.") | |
734 | (sym, newval) | |
735 | register Lisp_Object sym, newval; | |
736 | { | |
737 | int voide = (XTYPE (newval) == Lisp_Void || EQ (newval, Qunbound)); | |
738 | ||
739 | #ifndef RTPC_REGISTER_BUG | |
740 | register Lisp_Object valcontents, tem1, current_alist_element; | |
741 | #else /* RTPC_REGISTER_BUG */ | |
742 | register Lisp_Object tem1; | |
743 | Lisp_Object valcontents, current_alist_element; | |
744 | #endif /* RTPC_REGISTER_BUG */ | |
745 | ||
746 | CHECK_SYMBOL (sym, 0); | |
a33ef3ab | 747 | if (NILP (sym) || EQ (sym, Qt)) |
7921925c JB |
748 | return Fsignal (Qsetting_constant, Fcons (sym, Qnil)); |
749 | valcontents = XSYMBOL (sym)->value; | |
750 | ||
751 | if (XTYPE (valcontents) == Lisp_Buffer_Objfwd) | |
752 | { | |
753 | register int idx = XUINT (valcontents); | |
754 | register int mask = *(int *)(idx + (char *) &buffer_local_flags); | |
755 | if (mask > 0) | |
756 | current_buffer->local_var_flags |= mask; | |
757 | } | |
758 | ||
d8cafeb5 JB |
759 | else if (XTYPE (valcontents) == Lisp_Buffer_Local_Value |
760 | || XTYPE (valcontents) == Lisp_Some_Buffer_Local_Value) | |
7921925c | 761 | { |
d8cafeb5 JB |
762 | /* valcontents is actually a pointer to a cons heading something like: |
763 | (REALVALUE BUFFER CURRENT-ALIST-ELEMENT . DEFAULT-VALUE). | |
764 | ||
765 | BUFFER is the last buffer for which this symbol's value was | |
766 | made up to date. | |
767 | ||
768 | CURRENT-ALIST-ELEMENT is a pointer to an element of BUFFER's | |
769 | local_var_alist, that being the element whose car is this | |
770 | variable. Or it can be a pointer to the | |
771 | (CURRENT-ALIST-ELEMENT . DEFAULT-VALUE), if BUFFER does not | |
772 | have an element in its alist for this variable (that is, if | |
773 | BUFFER sees the default value of this variable). | |
774 | ||
775 | If we want to examine or set the value and BUFFER is current, | |
776 | we just examine or set REALVALUE. If BUFFER is not current, we | |
777 | store the current REALVALUE value into CURRENT-ALIST-ELEMENT, | |
778 | then find the appropriate alist element for the buffer now | |
779 | current and set up CURRENT-ALIST-ELEMENT. Then we set | |
780 | REALVALUE out of that element, and store into BUFFER. | |
781 | ||
782 | If we are setting the variable and the current buffer does | |
783 | not have an alist entry for this variable, an alist entry is | |
784 | created. | |
785 | ||
786 | Note that REALVALUE can be a forwarding pointer. Each time | |
787 | it is examined or set, forwarding must be done. */ | |
788 | ||
789 | /* What value are we caching right now? */ | |
790 | current_alist_element = | |
791 | XCONS (XCONS (XCONS (valcontents)->cdr)->cdr)->car; | |
792 | ||
793 | /* If the current buffer is not the buffer whose binding is | |
794 | currently cached, or if it's a Lisp_Buffer_Local_Value and | |
795 | we're looking at the default value, the cache is invalid; we | |
796 | need to write it out, and find the new CURRENT-ALIST-ELEMENT. */ | |
797 | if ((current_buffer | |
798 | != XBUFFER (XCONS (XCONS (valcontents)->cdr)->car)) | |
799 | || (XTYPE (valcontents) == Lisp_Buffer_Local_Value | |
800 | && XCONS (current_alist_element)->car == current_alist_element)) | |
7921925c | 801 | { |
d8cafeb5 JB |
802 | /* Write out the cached value for the old buffer; copy it |
803 | back to its alist element. This works if the current | |
804 | buffer only sees the default value, too. */ | |
805 | Fsetcdr (current_alist_element, | |
806 | do_symval_forwarding (XCONS (valcontents)->car)); | |
7921925c | 807 | |
d8cafeb5 | 808 | /* Find the new value for CURRENT-ALIST-ELEMENT. */ |
7921925c | 809 | tem1 = Fassq (sym, current_buffer->local_var_alist); |
a33ef3ab | 810 | if (NILP (tem1)) |
d8cafeb5 JB |
811 | { |
812 | /* This buffer still sees the default value. */ | |
813 | ||
814 | /* If the variable is a Lisp_Some_Buffer_Local_Value, | |
815 | make CURRENT-ALIST-ELEMENT point to itself, | |
816 | indicating that we're seeing the default value. */ | |
817 | if (XTYPE (valcontents) == Lisp_Some_Buffer_Local_Value) | |
818 | tem1 = XCONS (XCONS (valcontents)->cdr)->cdr; | |
819 | ||
820 | /* If it's a Lisp_Buffer_Local_Value, give this buffer a | |
821 | new assoc for a local value and set | |
822 | CURRENT-ALIST-ELEMENT to point to that. */ | |
823 | else | |
824 | { | |
825 | tem1 = Fcons (sym, Fcdr (current_alist_element)); | |
826 | current_buffer->local_var_alist = | |
827 | Fcons (tem1, current_buffer->local_var_alist); | |
828 | } | |
829 | } | |
830 | /* Cache the new buffer's assoc in CURRENT-ALIST-ELEMENT. */ | |
7921925c | 831 | XCONS (XCONS (XCONS (valcontents)->cdr)->cdr)->car = tem1; |
d8cafeb5 JB |
832 | |
833 | /* Set BUFFER, now that CURRENT-ALIST-ELEMENT is accurate. */ | |
834 | XSET (XCONS (XCONS (valcontents)->cdr)->car, | |
835 | Lisp_Buffer, current_buffer); | |
7921925c JB |
836 | } |
837 | valcontents = XCONS (valcontents)->car; | |
838 | } | |
d8cafeb5 | 839 | |
7921925c JB |
840 | /* If storing void (making the symbol void), forward only through |
841 | buffer-local indicator, not through Lisp_Objfwd, etc. */ | |
842 | if (voide) | |
843 | store_symval_forwarding (sym, Qnil, newval); | |
844 | else | |
845 | store_symval_forwarding (sym, valcontents, newval); | |
d8cafeb5 | 846 | |
7921925c JB |
847 | return newval; |
848 | } | |
849 | \f | |
850 | /* Access or set a buffer-local symbol's default value. */ | |
851 | ||
852 | /* Return the default value of SYM, but don't check for voidness. | |
853 | Return Qunbound or a Lisp_Void object if it is void. */ | |
854 | ||
855 | Lisp_Object | |
856 | default_value (sym) | |
857 | Lisp_Object sym; | |
858 | { | |
859 | register Lisp_Object valcontents; | |
860 | ||
861 | CHECK_SYMBOL (sym, 0); | |
862 | valcontents = XSYMBOL (sym)->value; | |
863 | ||
864 | /* For a built-in buffer-local variable, get the default value | |
865 | rather than letting do_symval_forwarding get the current value. */ | |
866 | if (XTYPE (valcontents) == Lisp_Buffer_Objfwd) | |
867 | { | |
868 | register int idx = XUINT (valcontents); | |
869 | ||
870 | if (*(int *) (idx + (char *) &buffer_local_flags) != 0) | |
871 | return *(Lisp_Object *)(idx + (char *) &buffer_defaults); | |
872 | } | |
873 | ||
874 | /* Handle user-created local variables. */ | |
875 | if (XTYPE (valcontents) == Lisp_Buffer_Local_Value | |
876 | || XTYPE (valcontents) == Lisp_Some_Buffer_Local_Value) | |
877 | { | |
878 | /* If var is set up for a buffer that lacks a local value for it, | |
879 | the current value is nominally the default value. | |
880 | But the current value slot may be more up to date, since | |
881 | ordinary setq stores just that slot. So use that. */ | |
882 | Lisp_Object current_alist_element, alist_element_car; | |
883 | current_alist_element | |
884 | = XCONS (XCONS (XCONS (valcontents)->cdr)->cdr)->car; | |
885 | alist_element_car = XCONS (current_alist_element)->car; | |
886 | if (EQ (alist_element_car, current_alist_element)) | |
887 | return do_symval_forwarding (XCONS (valcontents)->car); | |
888 | else | |
889 | return XCONS (XCONS (XCONS (valcontents)->cdr)->cdr)->cdr; | |
890 | } | |
891 | /* For other variables, get the current value. */ | |
892 | return do_symval_forwarding (valcontents); | |
893 | } | |
894 | ||
895 | DEFUN ("default-boundp", Fdefault_boundp, Sdefault_boundp, 1, 1, 0, | |
896 | "Return T if SYMBOL has a non-void default value.\n\ | |
897 | This is the value that is seen in buffers that do not have their own values\n\ | |
898 | for this variable.") | |
899 | (sym) | |
900 | Lisp_Object sym; | |
901 | { | |
902 | register Lisp_Object value; | |
903 | ||
904 | value = default_value (sym); | |
905 | return (XTYPE (value) == Lisp_Void || EQ (value, Qunbound) | |
906 | ? Qnil : Qt); | |
907 | } | |
908 | ||
909 | DEFUN ("default-value", Fdefault_value, Sdefault_value, 1, 1, 0, | |
910 | "Return SYMBOL's default value.\n\ | |
911 | This is the value that is seen in buffers that do not have their own values\n\ | |
912 | for this variable. The default value is meaningful for variables with\n\ | |
913 | local bindings in certain buffers.") | |
914 | (sym) | |
915 | Lisp_Object sym; | |
916 | { | |
917 | register Lisp_Object value; | |
918 | ||
919 | value = default_value (sym); | |
920 | if (XTYPE (value) == Lisp_Void || EQ (value, Qunbound)) | |
921 | return Fsignal (Qvoid_variable, Fcons (sym, Qnil)); | |
922 | return value; | |
923 | } | |
924 | ||
925 | DEFUN ("set-default", Fset_default, Sset_default, 2, 2, 0, | |
926 | "Set SYMBOL's default value to VAL. SYMBOL and VAL are evaluated.\n\ | |
927 | The default value is seen in buffers that do not have their own values\n\ | |
928 | for this variable.") | |
929 | (sym, value) | |
930 | Lisp_Object sym, value; | |
931 | { | |
932 | register Lisp_Object valcontents, current_alist_element, alist_element_buffer; | |
933 | ||
934 | CHECK_SYMBOL (sym, 0); | |
935 | valcontents = XSYMBOL (sym)->value; | |
936 | ||
937 | /* Handle variables like case-fold-search that have special slots | |
938 | in the buffer. Make them work apparently like Lisp_Buffer_Local_Value | |
939 | variables. */ | |
940 | if (XTYPE (valcontents) == Lisp_Buffer_Objfwd) | |
941 | { | |
942 | register int idx = XUINT (valcontents); | |
943 | #ifndef RTPC_REGISTER_BUG | |
944 | register struct buffer *b; | |
945 | #else | |
946 | struct buffer *b; | |
947 | #endif | |
948 | register int mask = *(int *) (idx + (char *) &buffer_local_flags); | |
949 | ||
950 | if (mask > 0) | |
951 | { | |
952 | *(Lisp_Object *)(idx + (char *) &buffer_defaults) = value; | |
953 | for (b = all_buffers; b; b = b->next) | |
954 | if (!(b->local_var_flags & mask)) | |
955 | *(Lisp_Object *)(idx + (char *) b) = value; | |
956 | } | |
957 | return value; | |
958 | } | |
959 | ||
960 | if (XTYPE (valcontents) != Lisp_Buffer_Local_Value && | |
961 | XTYPE (valcontents) != Lisp_Some_Buffer_Local_Value) | |
962 | return Fset (sym, value); | |
963 | ||
964 | /* Store new value into the DEFAULT-VALUE slot */ | |
965 | XCONS (XCONS (XCONS (valcontents)->cdr)->cdr)->cdr = value; | |
966 | ||
967 | /* If that slot is current, we must set the REALVALUE slot too */ | |
968 | current_alist_element = XCONS (XCONS (XCONS (valcontents)->cdr)->cdr)->car; | |
969 | alist_element_buffer = Fcar (current_alist_element); | |
970 | if (EQ (alist_element_buffer, current_alist_element)) | |
971 | store_symval_forwarding (sym, XCONS (valcontents)->car, value); | |
972 | ||
973 | return value; | |
974 | } | |
975 | ||
976 | DEFUN ("setq-default", Fsetq_default, Ssetq_default, 2, UNEVALLED, 0, | |
977 | "\ | |
978 | (setq-default SYM VAL SYM VAL ...): set each SYM's default value to its VAL.\n\ | |
979 | VAL is evaluated; SYM is not. The default value is seen in buffers that do\n\ | |
980 | not have their own values for this variable.") | |
981 | (args) | |
982 | Lisp_Object args; | |
983 | { | |
984 | register Lisp_Object args_left; | |
985 | register Lisp_Object val, sym; | |
986 | struct gcpro gcpro1; | |
987 | ||
a33ef3ab | 988 | if (NILP (args)) |
7921925c JB |
989 | return Qnil; |
990 | ||
991 | args_left = args; | |
992 | GCPRO1 (args); | |
993 | ||
994 | do | |
995 | { | |
996 | val = Feval (Fcar (Fcdr (args_left))); | |
997 | sym = Fcar (args_left); | |
998 | Fset_default (sym, val); | |
999 | args_left = Fcdr (Fcdr (args_left)); | |
1000 | } | |
a33ef3ab | 1001 | while (!NILP (args_left)); |
7921925c JB |
1002 | |
1003 | UNGCPRO; | |
1004 | return val; | |
1005 | } | |
1006 | \f | |
1007 | DEFUN ("make-variable-buffer-local", Fmake_variable_buffer_local, Smake_variable_buffer_local, | |
1008 | 1, 1, "vMake Variable Buffer Local: ", | |
1009 | "Make VARIABLE have a separate value for each buffer.\n\ | |
1010 | At any time, the value for the current buffer is in effect.\n\ | |
1011 | There is also a default value which is seen in any buffer which has not yet\n\ | |
1012 | set its own value.\n\ | |
1013 | Using `set' or `setq' to set the variable causes it to have a separate value\n\ | |
1014 | for the current buffer if it was previously using the default value.\n\ | |
1015 | The function `default-value' gets the default value and `set-default' sets it.") | |
1016 | (sym) | |
1017 | register Lisp_Object sym; | |
1018 | { | |
1019 | register Lisp_Object tem, valcontents; | |
1020 | ||
1021 | CHECK_SYMBOL (sym, 0); | |
1022 | ||
1023 | if (EQ (sym, Qnil) || EQ (sym, Qt)) | |
1024 | error ("Symbol %s may not be buffer-local", XSYMBOL (sym)->name->data); | |
1025 | ||
1026 | valcontents = XSYMBOL (sym)->value; | |
1027 | if ((XTYPE (valcontents) == Lisp_Buffer_Local_Value) || | |
1028 | (XTYPE (valcontents) == Lisp_Buffer_Objfwd)) | |
1029 | return sym; | |
1030 | if (XTYPE (valcontents) == Lisp_Some_Buffer_Local_Value) | |
1031 | { | |
1032 | XSETTYPE (XSYMBOL (sym)->value, Lisp_Buffer_Local_Value); | |
1033 | return sym; | |
1034 | } | |
1035 | if (EQ (valcontents, Qunbound)) | |
1036 | XSYMBOL (sym)->value = Qnil; | |
1037 | tem = Fcons (Qnil, Fsymbol_value (sym)); | |
1038 | XCONS (tem)->car = tem; | |
1039 | XSYMBOL (sym)->value = Fcons (XSYMBOL (sym)->value, Fcons (Fcurrent_buffer (), tem)); | |
1040 | XSETTYPE (XSYMBOL (sym)->value, Lisp_Buffer_Local_Value); | |
1041 | return sym; | |
1042 | } | |
1043 | ||
1044 | DEFUN ("make-local-variable", Fmake_local_variable, Smake_local_variable, | |
1045 | 1, 1, "vMake Local Variable: ", | |
1046 | "Make VARIABLE have a separate value in the current buffer.\n\ | |
1047 | Other buffers will continue to share a common default value.\n\ | |
1048 | See also `make-variable-buffer-local'.\n\n\ | |
1049 | If the variable is already arranged to become local when set,\n\ | |
1050 | this function causes a local value to exist for this buffer,\n\ | |
1051 | just as if the variable were set.") | |
1052 | (sym) | |
1053 | register Lisp_Object sym; | |
1054 | { | |
1055 | register Lisp_Object tem, valcontents; | |
1056 | ||
1057 | CHECK_SYMBOL (sym, 0); | |
1058 | ||
1059 | if (EQ (sym, Qnil) || EQ (sym, Qt)) | |
1060 | error ("Symbol %s may not be buffer-local", XSYMBOL (sym)->name->data); | |
1061 | ||
1062 | valcontents = XSYMBOL (sym)->value; | |
1063 | if (XTYPE (valcontents) == Lisp_Buffer_Local_Value | |
1064 | || XTYPE (valcontents) == Lisp_Buffer_Objfwd) | |
1065 | { | |
1066 | tem = Fboundp (sym); | |
1067 | ||
1068 | /* Make sure the symbol has a local value in this particular buffer, | |
1069 | by setting it to the same value it already has. */ | |
1070 | Fset (sym, (EQ (tem, Qt) ? Fsymbol_value (sym) : Qunbound)); | |
1071 | return sym; | |
1072 | } | |
1073 | /* Make sure sym is set up to hold per-buffer values */ | |
1074 | if (XTYPE (valcontents) != Lisp_Some_Buffer_Local_Value) | |
1075 | { | |
1076 | if (EQ (valcontents, Qunbound)) | |
1077 | XSYMBOL (sym)->value = Qnil; | |
1078 | tem = Fcons (Qnil, do_symval_forwarding (valcontents)); | |
1079 | XCONS (tem)->car = tem; | |
1080 | XSYMBOL (sym)->value = Fcons (XSYMBOL (sym)->value, Fcons (Qnil, tem)); | |
1081 | XSETTYPE (XSYMBOL (sym)->value, Lisp_Some_Buffer_Local_Value); | |
1082 | } | |
1083 | /* Make sure this buffer has its own value of sym */ | |
1084 | tem = Fassq (sym, current_buffer->local_var_alist); | |
a33ef3ab | 1085 | if (NILP (tem)) |
7921925c JB |
1086 | { |
1087 | current_buffer->local_var_alist | |
1088 | = Fcons (Fcons (sym, XCONS (XCONS (XCONS (XSYMBOL (sym)->value)->cdr)->cdr)->cdr), | |
1089 | current_buffer->local_var_alist); | |
1090 | ||
1091 | /* Make sure symbol does not think it is set up for this buffer; | |
1092 | force it to look once again for this buffer's value */ | |
1093 | { | |
1094 | /* This local variable avoids "expression too complex" on IBM RT. */ | |
1095 | Lisp_Object xs; | |
1096 | ||
1097 | xs = XSYMBOL (sym)->value; | |
1098 | if (current_buffer == XBUFFER (XCONS (XCONS (xs)->cdr)->car)) | |
1099 | XCONS (XCONS (XSYMBOL (sym)->value)->cdr)->car = Qnil; | |
1100 | } | |
1101 | ||
1102 | } | |
1103 | return sym; | |
1104 | } | |
1105 | ||
1106 | DEFUN ("kill-local-variable", Fkill_local_variable, Skill_local_variable, | |
1107 | 1, 1, "vKill Local Variable: ", | |
1108 | "Make VARIABLE no longer have a separate value in the current buffer.\n\ | |
1109 | From now on the default value will apply in this buffer.") | |
1110 | (sym) | |
1111 | register Lisp_Object sym; | |
1112 | { | |
1113 | register Lisp_Object tem, valcontents; | |
1114 | ||
1115 | CHECK_SYMBOL (sym, 0); | |
1116 | ||
1117 | valcontents = XSYMBOL (sym)->value; | |
1118 | ||
1119 | if (XTYPE (valcontents) == Lisp_Buffer_Objfwd) | |
1120 | { | |
1121 | register int idx = XUINT (valcontents); | |
1122 | register int mask = *(int *) (idx + (char *) &buffer_local_flags); | |
1123 | ||
1124 | if (mask > 0) | |
1125 | { | |
1126 | *(Lisp_Object *)(idx + (char *) current_buffer) | |
1127 | = *(Lisp_Object *)(idx + (char *) &buffer_defaults); | |
1128 | current_buffer->local_var_flags &= ~mask; | |
1129 | } | |
1130 | return sym; | |
1131 | } | |
1132 | ||
1133 | if (XTYPE (valcontents) != Lisp_Buffer_Local_Value && | |
1134 | XTYPE (valcontents) != Lisp_Some_Buffer_Local_Value) | |
1135 | return sym; | |
1136 | ||
1137 | /* Get rid of this buffer's alist element, if any */ | |
1138 | ||
1139 | tem = Fassq (sym, current_buffer->local_var_alist); | |
a33ef3ab | 1140 | if (!NILP (tem)) |
7921925c JB |
1141 | current_buffer->local_var_alist = Fdelq (tem, current_buffer->local_var_alist); |
1142 | ||
1143 | /* Make sure symbol does not think it is set up for this buffer; | |
1144 | force it to look once again for this buffer's value */ | |
1145 | { | |
1146 | Lisp_Object sv; | |
1147 | sv = XSYMBOL (sym)->value; | |
1148 | if (current_buffer == XBUFFER (XCONS (XCONS (sv)->cdr)->car)) | |
1149 | XCONS (XCONS (sv)->cdr)->car = Qnil; | |
1150 | } | |
1151 | ||
1152 | return sym; | |
1153 | } | |
1154 | \f | |
ffd56f97 JB |
1155 | /* Find the function at the end of a chain of symbol function indirections. */ |
1156 | ||
1157 | /* If OBJECT is a symbol, find the end of its function chain and | |
1158 | return the value found there. If OBJECT is not a symbol, just | |
1159 | return it. If there is a cycle in the function chain, signal a | |
1160 | cyclic-function-indirection error. | |
1161 | ||
1162 | This is like Findirect_function, except that it doesn't signal an | |
1163 | error if the chain ends up unbound. */ | |
1164 | Lisp_Object | |
1165 | indirect_function (object, error) | |
1166 | register Lisp_Object object; | |
1167 | { | |
1168 | Lisp_Object tortise, hare; | |
1169 | ||
1170 | hare = tortise = object; | |
1171 | ||
1172 | for (;;) | |
1173 | { | |
1174 | if (XTYPE (hare) != Lisp_Symbol || EQ (hare, Qunbound)) | |
1175 | break; | |
1176 | hare = XSYMBOL (hare)->function; | |
1177 | if (XTYPE (hare) != Lisp_Symbol || EQ (hare, Qunbound)) | |
1178 | break; | |
1179 | hare = XSYMBOL (hare)->function; | |
1180 | ||
1181 | tortise = XSYMBOL (tortise)->function; | |
1182 | ||
1183 | if (EQ (hare, tortise)) | |
1184 | Fsignal (Qcyclic_function_indirection, Fcons (object, Qnil)); | |
1185 | } | |
1186 | ||
1187 | return hare; | |
1188 | } | |
1189 | ||
1190 | DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 1, 0, | |
1191 | "Return the function at the end of OBJECT's function chain.\n\ | |
1192 | If OBJECT is a symbol, follow all function indirections and return the final\n\ | |
1193 | function binding.\n\ | |
1194 | If OBJECT is not a symbol, just return it.\n\ | |
1195 | Signal a void-function error if the final symbol is unbound.\n\ | |
1196 | Signal a cyclic-function-indirection error if there is a loop in the\n\ | |
1197 | function chain of symbols.") | |
1198 | (object) | |
1199 | register Lisp_Object object; | |
1200 | { | |
1201 | Lisp_Object result; | |
1202 | ||
1203 | result = indirect_function (object); | |
1204 | ||
1205 | if (EQ (result, Qunbound)) | |
1206 | return Fsignal (Qvoid_function, Fcons (object, Qnil)); | |
1207 | return result; | |
1208 | } | |
1209 | \f | |
7921925c JB |
1210 | /* Extract and set vector and string elements */ |
1211 | ||
1212 | DEFUN ("aref", Faref, Saref, 2, 2, 0, | |
1213 | "Return the element of ARRAY at index INDEX.\n\ | |
1214 | ARRAY may be a vector or a string, or a byte-code object. INDEX starts at 0.") | |
1215 | (array, idx) | |
1216 | register Lisp_Object array; | |
1217 | Lisp_Object idx; | |
1218 | { | |
1219 | register int idxval; | |
1220 | ||
1221 | CHECK_NUMBER (idx, 1); | |
1222 | idxval = XINT (idx); | |
1223 | if (XTYPE (array) != Lisp_Vector && XTYPE (array) != Lisp_String | |
1224 | && XTYPE (array) != Lisp_Compiled) | |
1225 | array = wrong_type_argument (Qarrayp, array); | |
1226 | if (idxval < 0 || idxval >= XVECTOR (array)->size) | |
1227 | args_out_of_range (array, idx); | |
1228 | if (XTYPE (array) == Lisp_String) | |
1229 | { | |
1230 | Lisp_Object val; | |
1231 | XFASTINT (val) = (unsigned char) XSTRING (array)->data[idxval]; | |
1232 | return val; | |
1233 | } | |
1234 | else | |
1235 | return XVECTOR (array)->contents[idxval]; | |
1236 | } | |
1237 | ||
1238 | DEFUN ("aset", Faset, Saset, 3, 3, 0, | |
1239 | "Store into the element of ARRAY at index INDEX the value NEWVAL.\n\ | |
1240 | ARRAY may be a vector or a string. INDEX starts at 0.") | |
1241 | (array, idx, newelt) | |
1242 | register Lisp_Object array; | |
1243 | Lisp_Object idx, newelt; | |
1244 | { | |
1245 | register int idxval; | |
1246 | ||
1247 | CHECK_NUMBER (idx, 1); | |
1248 | idxval = XINT (idx); | |
1249 | if (XTYPE (array) != Lisp_Vector && XTYPE (array) != Lisp_String) | |
1250 | array = wrong_type_argument (Qarrayp, array); | |
1251 | if (idxval < 0 || idxval >= XVECTOR (array)->size) | |
1252 | args_out_of_range (array, idx); | |
1253 | CHECK_IMPURE (array); | |
1254 | ||
1255 | if (XTYPE (array) == Lisp_Vector) | |
1256 | XVECTOR (array)->contents[idxval] = newelt; | |
1257 | else | |
1258 | { | |
1259 | CHECK_NUMBER (newelt, 2); | |
1260 | XSTRING (array)->data[idxval] = XINT (newelt); | |
1261 | } | |
1262 | ||
1263 | return newelt; | |
1264 | } | |
1265 | ||
1266 | Lisp_Object | |
1267 | Farray_length (array) | |
1268 | register Lisp_Object array; | |
1269 | { | |
1270 | register Lisp_Object size; | |
1271 | if (XTYPE (array) != Lisp_Vector && XTYPE (array) != Lisp_String | |
1272 | && XTYPE (array) != Lisp_Compiled) | |
1273 | array = wrong_type_argument (Qarrayp, array); | |
1274 | XFASTINT (size) = XVECTOR (array)->size; | |
1275 | return size; | |
1276 | } | |
1277 | \f | |
1278 | /* Arithmetic functions */ | |
1279 | ||
1280 | enum comparison { equal, notequal, less, grtr, less_or_equal, grtr_or_equal }; | |
1281 | ||
1282 | Lisp_Object | |
1283 | arithcompare (num1, num2, comparison) | |
1284 | Lisp_Object num1, num2; | |
1285 | enum comparison comparison; | |
1286 | { | |
1287 | double f1, f2; | |
1288 | int floatp = 0; | |
1289 | ||
1290 | #ifdef LISP_FLOAT_TYPE | |
1291 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1, 0); | |
1292 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2, 0); | |
1293 | ||
1294 | if (XTYPE (num1) == Lisp_Float || XTYPE (num2) == Lisp_Float) | |
1295 | { | |
1296 | floatp = 1; | |
1297 | f1 = (XTYPE (num1) == Lisp_Float) ? XFLOAT (num1)->data : XINT (num1); | |
1298 | f2 = (XTYPE (num2) == Lisp_Float) ? XFLOAT (num2)->data : XINT (num2); | |
1299 | } | |
1300 | #else | |
1301 | CHECK_NUMBER_COERCE_MARKER (num1, 0); | |
1302 | CHECK_NUMBER_COERCE_MARKER (num2, 0); | |
1303 | #endif /* LISP_FLOAT_TYPE */ | |
1304 | ||
1305 | switch (comparison) | |
1306 | { | |
1307 | case equal: | |
1308 | if (floatp ? f1 == f2 : XINT (num1) == XINT (num2)) | |
1309 | return Qt; | |
1310 | return Qnil; | |
1311 | ||
1312 | case notequal: | |
1313 | if (floatp ? f1 != f2 : XINT (num1) != XINT (num2)) | |
1314 | return Qt; | |
1315 | return Qnil; | |
1316 | ||
1317 | case less: | |
1318 | if (floatp ? f1 < f2 : XINT (num1) < XINT (num2)) | |
1319 | return Qt; | |
1320 | return Qnil; | |
1321 | ||
1322 | case less_or_equal: | |
1323 | if (floatp ? f1 <= f2 : XINT (num1) <= XINT (num2)) | |
1324 | return Qt; | |
1325 | return Qnil; | |
1326 | ||
1327 | case grtr: | |
1328 | if (floatp ? f1 > f2 : XINT (num1) > XINT (num2)) | |
1329 | return Qt; | |
1330 | return Qnil; | |
1331 | ||
1332 | case grtr_or_equal: | |
1333 | if (floatp ? f1 >= f2 : XINT (num1) >= XINT (num2)) | |
1334 | return Qt; | |
1335 | return Qnil; | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | DEFUN ("=", Feqlsign, Seqlsign, 2, 2, 0, | |
1340 | "T if two args, both numbers or markers, are equal.") | |
1341 | (num1, num2) | |
1342 | register Lisp_Object num1, num2; | |
1343 | { | |
1344 | return arithcompare (num1, num2, equal); | |
1345 | } | |
1346 | ||
1347 | DEFUN ("<", Flss, Slss, 2, 2, 0, | |
1348 | "T if first arg is less than second arg. Both must be numbers or markers.") | |
1349 | (num1, num2) | |
1350 | register Lisp_Object num1, num2; | |
1351 | { | |
1352 | return arithcompare (num1, num2, less); | |
1353 | } | |
1354 | ||
1355 | DEFUN (">", Fgtr, Sgtr, 2, 2, 0, | |
1356 | "T if first arg is greater than second arg. Both must be numbers or markers.") | |
1357 | (num1, num2) | |
1358 | register Lisp_Object num1, num2; | |
1359 | { | |
1360 | return arithcompare (num1, num2, grtr); | |
1361 | } | |
1362 | ||
1363 | DEFUN ("<=", Fleq, Sleq, 2, 2, 0, | |
1364 | "T if first arg is less than or equal to second arg.\n\ | |
1365 | Both must be numbers or markers.") | |
1366 | (num1, num2) | |
1367 | register Lisp_Object num1, num2; | |
1368 | { | |
1369 | return arithcompare (num1, num2, less_or_equal); | |
1370 | } | |
1371 | ||
1372 | DEFUN (">=", Fgeq, Sgeq, 2, 2, 0, | |
1373 | "T if first arg is greater than or equal to second arg.\n\ | |
1374 | Both must be numbers or markers.") | |
1375 | (num1, num2) | |
1376 | register Lisp_Object num1, num2; | |
1377 | { | |
1378 | return arithcompare (num1, num2, grtr_or_equal); | |
1379 | } | |
1380 | ||
1381 | DEFUN ("/=", Fneq, Sneq, 2, 2, 0, | |
1382 | "T if first arg is not equal to second arg. Both must be numbers or markers.") | |
1383 | (num1, num2) | |
1384 | register Lisp_Object num1, num2; | |
1385 | { | |
1386 | return arithcompare (num1, num2, notequal); | |
1387 | } | |
1388 | ||
1389 | DEFUN ("zerop", Fzerop, Szerop, 1, 1, 0, "T if NUMBER is zero.") | |
1390 | (num) | |
1391 | register Lisp_Object num; | |
1392 | { | |
1393 | #ifdef LISP_FLOAT_TYPE | |
1394 | CHECK_NUMBER_OR_FLOAT (num, 0); | |
1395 | ||
1396 | if (XTYPE(num) == Lisp_Float) | |
1397 | { | |
1398 | if (XFLOAT(num)->data == 0.0) | |
1399 | return Qt; | |
1400 | return Qnil; | |
1401 | } | |
1402 | #else | |
1403 | CHECK_NUMBER (num, 0); | |
1404 | #endif /* LISP_FLOAT_TYPE */ | |
1405 | ||
1406 | if (!XINT (num)) | |
1407 | return Qt; | |
1408 | return Qnil; | |
1409 | } | |
1410 | \f | |
1411 | DEFUN ("int-to-string", Fint_to_string, Sint_to_string, 1, 1, 0, | |
1412 | "Convert INT to a string by printing it in decimal.\n\ | |
1413 | Uses a minus sign if negative.") | |
1414 | (num) | |
1415 | Lisp_Object num; | |
1416 | { | |
1417 | char buffer[20]; | |
1418 | ||
1419 | #ifndef LISP_FLOAT_TYPE | |
1420 | CHECK_NUMBER (num, 0); | |
1421 | #else | |
1422 | CHECK_NUMBER_OR_FLOAT (num, 0); | |
1423 | ||
1424 | if (XTYPE(num) == Lisp_Float) | |
1425 | { | |
1426 | char pigbuf[350]; /* see comments in float_to_string */ | |
1427 | ||
1428 | float_to_string (pigbuf, XFLOAT(num)->data); | |
1429 | return build_string (pigbuf); | |
1430 | } | |
1431 | #endif /* LISP_FLOAT_TYPE */ | |
1432 | ||
1433 | sprintf (buffer, "%d", XINT (num)); | |
1434 | return build_string (buffer); | |
1435 | } | |
1436 | ||
1437 | DEFUN ("string-to-int", Fstring_to_int, Sstring_to_int, 1, 1, 0, | |
1438 | "Convert STRING to an integer by parsing it as a decimal number.") | |
1439 | (str) | |
1440 | register Lisp_Object str; | |
1441 | { | |
1442 | CHECK_STRING (str, 0); | |
1443 | ||
1444 | #ifdef LISP_FLOAT_TYPE | |
1445 | if (isfloat_string (XSTRING (str)->data)) | |
1446 | return make_float (atof (XSTRING (str)->data)); | |
1447 | #endif /* LISP_FLOAT_TYPE */ | |
1448 | ||
1449 | return make_number (atoi (XSTRING (str)->data)); | |
1450 | } | |
1451 | \f | |
1452 | enum arithop | |
1453 | { Aadd, Asub, Amult, Adiv, Alogand, Alogior, Alogxor, Amax, Amin }; | |
1454 | ||
1455 | Lisp_Object | |
1456 | arith_driver | |
1457 | (code, nargs, args) | |
1458 | enum arithop code; | |
1459 | int nargs; | |
1460 | register Lisp_Object *args; | |
1461 | { | |
1462 | register Lisp_Object val; | |
1463 | register int argnum; | |
1464 | register int accum; | |
1465 | register int next; | |
1466 | ||
1467 | #ifdef SWITCH_ENUM_BUG | |
1468 | switch ((int) code) | |
1469 | #else | |
1470 | switch (code) | |
1471 | #endif | |
1472 | { | |
1473 | case Alogior: | |
1474 | case Alogxor: | |
1475 | case Aadd: | |
1476 | case Asub: | |
1477 | accum = 0; break; | |
1478 | case Amult: | |
1479 | accum = 1; break; | |
1480 | case Alogand: | |
1481 | accum = -1; break; | |
1482 | } | |
1483 | ||
1484 | for (argnum = 0; argnum < nargs; argnum++) | |
1485 | { | |
1486 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ | |
1487 | #ifdef LISP_FLOAT_TYPE | |
1488 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val, argnum); | |
1489 | ||
1490 | if (XTYPE (val) == Lisp_Float) /* time to do serious math */ | |
1491 | return (float_arith_driver ((double) accum, argnum, code, | |
1492 | nargs, args)); | |
1493 | #else | |
1494 | CHECK_NUMBER_COERCE_MARKER (val, argnum); | |
1495 | #endif /* LISP_FLOAT_TYPE */ | |
1496 | args[argnum] = val; /* runs into a compiler bug. */ | |
1497 | next = XINT (args[argnum]); | |
1498 | #ifdef SWITCH_ENUM_BUG | |
1499 | switch ((int) code) | |
1500 | #else | |
1501 | switch (code) | |
1502 | #endif | |
1503 | { | |
1504 | case Aadd: accum += next; break; | |
1505 | case Asub: | |
1506 | if (!argnum && nargs != 1) | |
1507 | next = - next; | |
1508 | accum -= next; | |
1509 | break; | |
1510 | case Amult: accum *= next; break; | |
1511 | case Adiv: | |
1512 | if (!argnum) accum = next; | |
1513 | else accum /= next; | |
1514 | break; | |
1515 | case Alogand: accum &= next; break; | |
1516 | case Alogior: accum |= next; break; | |
1517 | case Alogxor: accum ^= next; break; | |
1518 | case Amax: if (!argnum || next > accum) accum = next; break; | |
1519 | case Amin: if (!argnum || next < accum) accum = next; break; | |
1520 | } | |
1521 | } | |
1522 | ||
1523 | XSET (val, Lisp_Int, accum); | |
1524 | return val; | |
1525 | } | |
1526 | ||
1527 | #ifdef LISP_FLOAT_TYPE | |
1528 | Lisp_Object | |
1529 | float_arith_driver (accum, argnum, code, nargs, args) | |
1530 | double accum; | |
1531 | register int argnum; | |
1532 | enum arithop code; | |
1533 | int nargs; | |
1534 | register Lisp_Object *args; | |
1535 | { | |
1536 | register Lisp_Object val; | |
1537 | double next; | |
1538 | ||
1539 | for (; argnum < nargs; argnum++) | |
1540 | { | |
1541 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ | |
1542 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val, argnum); | |
1543 | ||
1544 | if (XTYPE (val) == Lisp_Float) | |
1545 | { | |
1546 | next = XFLOAT (val)->data; | |
1547 | } | |
1548 | else | |
1549 | { | |
1550 | args[argnum] = val; /* runs into a compiler bug. */ | |
1551 | next = XINT (args[argnum]); | |
1552 | } | |
1553 | #ifdef SWITCH_ENUM_BUG | |
1554 | switch ((int) code) | |
1555 | #else | |
1556 | switch (code) | |
1557 | #endif | |
1558 | { | |
1559 | case Aadd: | |
1560 | accum += next; | |
1561 | break; | |
1562 | case Asub: | |
1563 | if (!argnum && nargs != 1) | |
1564 | next = - next; | |
1565 | accum -= next; | |
1566 | break; | |
1567 | case Amult: | |
1568 | accum *= next; | |
1569 | break; | |
1570 | case Adiv: | |
1571 | if (!argnum) | |
1572 | accum = next; | |
1573 | else | |
1574 | accum /= next; | |
1575 | break; | |
1576 | case Alogand: | |
1577 | case Alogior: | |
1578 | case Alogxor: | |
1579 | return wrong_type_argument (Qinteger_or_marker_p, val); | |
1580 | case Amax: | |
1581 | if (!argnum || next > accum) | |
1582 | accum = next; | |
1583 | break; | |
1584 | case Amin: | |
1585 | if (!argnum || next < accum) | |
1586 | accum = next; | |
1587 | break; | |
1588 | } | |
1589 | } | |
1590 | ||
1591 | return make_float (accum); | |
1592 | } | |
1593 | #endif /* LISP_FLOAT_TYPE */ | |
1594 | ||
1595 | DEFUN ("+", Fplus, Splus, 0, MANY, 0, | |
1596 | "Return sum of any number of arguments, which are numbers or markers.") | |
1597 | (nargs, args) | |
1598 | int nargs; | |
1599 | Lisp_Object *args; | |
1600 | { | |
1601 | return arith_driver (Aadd, nargs, args); | |
1602 | } | |
1603 | ||
1604 | DEFUN ("-", Fminus, Sminus, 0, MANY, 0, | |
1605 | "Negate number or subtract numbers or markers.\n\ | |
1606 | With one arg, negates it. With more than one arg,\n\ | |
1607 | subtracts all but the first from the first.") | |
1608 | (nargs, args) | |
1609 | int nargs; | |
1610 | Lisp_Object *args; | |
1611 | { | |
1612 | return arith_driver (Asub, nargs, args); | |
1613 | } | |
1614 | ||
1615 | DEFUN ("*", Ftimes, Stimes, 0, MANY, 0, | |
1616 | "Returns product of any number of arguments, which are numbers or markers.") | |
1617 | (nargs, args) | |
1618 | int nargs; | |
1619 | Lisp_Object *args; | |
1620 | { | |
1621 | return arith_driver (Amult, nargs, args); | |
1622 | } | |
1623 | ||
1624 | DEFUN ("/", Fquo, Squo, 2, MANY, 0, | |
1625 | "Returns first argument divided by all the remaining arguments.\n\ | |
1626 | The arguments must be numbers or markers.") | |
1627 | (nargs, args) | |
1628 | int nargs; | |
1629 | Lisp_Object *args; | |
1630 | { | |
1631 | return arith_driver (Adiv, nargs, args); | |
1632 | } | |
1633 | ||
1634 | DEFUN ("%", Frem, Srem, 2, 2, 0, | |
1635 | "Returns remainder of first arg divided by second.\n\ | |
1636 | Both must be numbers or markers.") | |
1637 | (num1, num2) | |
1638 | register Lisp_Object num1, num2; | |
1639 | { | |
1640 | Lisp_Object val; | |
1641 | ||
1642 | #ifdef LISP_FLOAT_TYPE | |
1643 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1, 0); | |
1644 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2, 0); | |
1645 | ||
1646 | if (XTYPE (num1) == Lisp_Float || XTYPE (num2) == Lisp_Float) | |
1647 | { | |
1648 | double f1, f2; | |
1649 | ||
1650 | f1 = XTYPE (num1) == Lisp_Float ? XFLOAT (num1)->data : XINT (num1); | |
1651 | f2 = XTYPE (num2) == Lisp_Float ? XFLOAT (num2)->data : XINT (num2); | |
bc540f9f JB |
1652 | #ifdef USG |
1653 | f1 = fmod (f1, f2); | |
1654 | #else | |
d8cafeb5 | 1655 | f1 = drem (f1, f2); |
bc540f9f | 1656 | #endif |
d8cafeb5 JB |
1657 | if (f1 < 0) |
1658 | f1 += f2; | |
1659 | return (make_float (f1)); | |
7921925c JB |
1660 | } |
1661 | #else /* not LISP_FLOAT_TYPE */ | |
1662 | CHECK_NUMBER_COERCE_MARKER (num1, 0); | |
1663 | CHECK_NUMBER_COERCE_MARKER (num2, 1); | |
1664 | #endif /* not LISP_FLOAT_TYPE */ | |
1665 | ||
1666 | XSET (val, Lisp_Int, XINT (num1) % XINT (num2)); | |
1667 | return val; | |
1668 | } | |
1669 | ||
1670 | DEFUN ("max", Fmax, Smax, 1, MANY, 0, | |
1671 | "Return largest of all the arguments (which must be numbers or markers).\n\ | |
1672 | The value is always a number; markers are converted to numbers.") | |
1673 | (nargs, args) | |
1674 | int nargs; | |
1675 | Lisp_Object *args; | |
1676 | { | |
1677 | return arith_driver (Amax, nargs, args); | |
1678 | } | |
1679 | ||
1680 | DEFUN ("min", Fmin, Smin, 1, MANY, 0, | |
1681 | "Return smallest of all the arguments (which must be numbers or markers).\n\ | |
1682 | The value is always a number; markers are converted to numbers.") | |
1683 | (nargs, args) | |
1684 | int nargs; | |
1685 | Lisp_Object *args; | |
1686 | { | |
1687 | return arith_driver (Amin, nargs, args); | |
1688 | } | |
1689 | ||
1690 | DEFUN ("logand", Flogand, Slogand, 0, MANY, 0, | |
1691 | "Return bitwise-and of all the arguments.\n\ | |
1692 | Arguments may be integers, or markers converted to integers.") | |
1693 | (nargs, args) | |
1694 | int nargs; | |
1695 | Lisp_Object *args; | |
1696 | { | |
1697 | return arith_driver (Alogand, nargs, args); | |
1698 | } | |
1699 | ||
1700 | DEFUN ("logior", Flogior, Slogior, 0, MANY, 0, | |
1701 | "Return bitwise-or of all the arguments.\n\ | |
1702 | Arguments may be integers, or markers converted to integers.") | |
1703 | (nargs, args) | |
1704 | int nargs; | |
1705 | Lisp_Object *args; | |
1706 | { | |
1707 | return arith_driver (Alogior, nargs, args); | |
1708 | } | |
1709 | ||
1710 | DEFUN ("logxor", Flogxor, Slogxor, 0, MANY, 0, | |
1711 | "Return bitwise-exclusive-or of all the arguments.\n\ | |
1712 | Arguments may be integers, or markers converted to integers.") | |
1713 | (nargs, args) | |
1714 | int nargs; | |
1715 | Lisp_Object *args; | |
1716 | { | |
1717 | return arith_driver (Alogxor, nargs, args); | |
1718 | } | |
1719 | ||
1720 | DEFUN ("ash", Fash, Sash, 2, 2, 0, | |
1721 | "Return VALUE with its bits shifted left by COUNT.\n\ | |
1722 | If COUNT is negative, shifting is actually to the right.\n\ | |
1723 | In this case, the sign bit is duplicated.") | |
1724 | (num1, num2) | |
1725 | register Lisp_Object num1, num2; | |
1726 | { | |
1727 | register Lisp_Object val; | |
1728 | ||
1729 | CHECK_NUMBER (num1, 0); | |
1730 | CHECK_NUMBER (num2, 1); | |
1731 | ||
1732 | if (XINT (num2) > 0) | |
1733 | XSET (val, Lisp_Int, XINT (num1) << XFASTINT (num2)); | |
1734 | else | |
1735 | XSET (val, Lisp_Int, XINT (num1) >> -XINT (num2)); | |
1736 | return val; | |
1737 | } | |
1738 | ||
1739 | DEFUN ("lsh", Flsh, Slsh, 2, 2, 0, | |
1740 | "Return VALUE with its bits shifted left by COUNT.\n\ | |
1741 | If COUNT is negative, shifting is actually to the right.\n\ | |
1742 | In this case, zeros are shifted in on the left.") | |
1743 | (num1, num2) | |
1744 | register Lisp_Object num1, num2; | |
1745 | { | |
1746 | register Lisp_Object val; | |
1747 | ||
1748 | CHECK_NUMBER (num1, 0); | |
1749 | CHECK_NUMBER (num2, 1); | |
1750 | ||
1751 | if (XINT (num2) > 0) | |
1752 | XSET (val, Lisp_Int, (unsigned) XFASTINT (num1) << XFASTINT (num2)); | |
1753 | else | |
1754 | XSET (val, Lisp_Int, (unsigned) XFASTINT (num1) >> -XINT (num2)); | |
1755 | return val; | |
1756 | } | |
1757 | ||
1758 | DEFUN ("1+", Fadd1, Sadd1, 1, 1, 0, | |
1759 | "Return NUMBER plus one. NUMBER may be a number or a marker.\n\ | |
1760 | Markers are converted to integers.") | |
1761 | (num) | |
1762 | register Lisp_Object num; | |
1763 | { | |
1764 | #ifdef LISP_FLOAT_TYPE | |
1765 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num, 0); | |
1766 | ||
1767 | if (XTYPE (num) == Lisp_Float) | |
1768 | return (make_float (1.0 + XFLOAT (num)->data)); | |
1769 | #else | |
1770 | CHECK_NUMBER_COERCE_MARKER (num, 0); | |
1771 | #endif /* LISP_FLOAT_TYPE */ | |
1772 | ||
1773 | XSETINT (num, XFASTINT (num) + 1); | |
1774 | return num; | |
1775 | } | |
1776 | ||
1777 | DEFUN ("1-", Fsub1, Ssub1, 1, 1, 0, | |
1778 | "Return NUMBER minus one. NUMBER may be a number or a marker.\n\ | |
1779 | Markers are converted to integers.") | |
1780 | (num) | |
1781 | register Lisp_Object num; | |
1782 | { | |
1783 | #ifdef LISP_FLOAT_TYPE | |
1784 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num, 0); | |
1785 | ||
1786 | if (XTYPE (num) == Lisp_Float) | |
1787 | return (make_float (-1.0 + XFLOAT (num)->data)); | |
1788 | #else | |
1789 | CHECK_NUMBER_COERCE_MARKER (num, 0); | |
1790 | #endif /* LISP_FLOAT_TYPE */ | |
1791 | ||
1792 | XSETINT (num, XFASTINT (num) - 1); | |
1793 | return num; | |
1794 | } | |
1795 | ||
1796 | DEFUN ("lognot", Flognot, Slognot, 1, 1, 0, | |
1797 | "Return the bitwise complement of ARG. ARG must be an integer.") | |
1798 | (num) | |
1799 | register Lisp_Object num; | |
1800 | { | |
1801 | CHECK_NUMBER (num, 0); | |
1802 | XSETINT (num, ~XFASTINT (num)); | |
1803 | return num; | |
1804 | } | |
1805 | \f | |
1806 | void | |
1807 | syms_of_data () | |
1808 | { | |
1809 | Qquote = intern ("quote"); | |
1810 | Qlambda = intern ("lambda"); | |
1811 | Qsubr = intern ("subr"); | |
1812 | Qerror_conditions = intern ("error-conditions"); | |
1813 | Qerror_message = intern ("error-message"); | |
1814 | Qtop_level = intern ("top-level"); | |
1815 | ||
1816 | Qerror = intern ("error"); | |
1817 | Qquit = intern ("quit"); | |
1818 | Qwrong_type_argument = intern ("wrong-type-argument"); | |
1819 | Qargs_out_of_range = intern ("args-out-of-range"); | |
1820 | Qvoid_function = intern ("void-function"); | |
ffd56f97 | 1821 | Qcyclic_function_indirection = intern ("cyclic-function-indirection"); |
7921925c JB |
1822 | Qvoid_variable = intern ("void-variable"); |
1823 | Qsetting_constant = intern ("setting-constant"); | |
1824 | Qinvalid_read_syntax = intern ("invalid-read-syntax"); | |
1825 | ||
1826 | Qinvalid_function = intern ("invalid-function"); | |
1827 | Qwrong_number_of_arguments = intern ("wrong-number-of-arguments"); | |
1828 | Qno_catch = intern ("no-catch"); | |
1829 | Qend_of_file = intern ("end-of-file"); | |
1830 | Qarith_error = intern ("arith-error"); | |
1831 | Qbeginning_of_buffer = intern ("beginning-of-buffer"); | |
1832 | Qend_of_buffer = intern ("end-of-buffer"); | |
1833 | Qbuffer_read_only = intern ("buffer-read-only"); | |
1834 | ||
1835 | Qlistp = intern ("listp"); | |
1836 | Qconsp = intern ("consp"); | |
1837 | Qsymbolp = intern ("symbolp"); | |
1838 | Qintegerp = intern ("integerp"); | |
1839 | Qnatnump = intern ("natnump"); | |
1840 | Qstringp = intern ("stringp"); | |
1841 | Qarrayp = intern ("arrayp"); | |
1842 | Qsequencep = intern ("sequencep"); | |
1843 | Qbufferp = intern ("bufferp"); | |
1844 | Qvectorp = intern ("vectorp"); | |
1845 | Qchar_or_string_p = intern ("char-or-string-p"); | |
1846 | Qmarkerp = intern ("markerp"); | |
1847 | Qinteger_or_marker_p = intern ("integer-or-marker-p"); | |
1848 | Qboundp = intern ("boundp"); | |
1849 | Qfboundp = intern ("fboundp"); | |
1850 | ||
1851 | #ifdef LISP_FLOAT_TYPE | |
1852 | Qfloatp = intern ("floatp"); | |
1853 | Qnumberp = intern ("numberp"); | |
1854 | Qnumber_or_marker_p = intern ("number-or-marker-p"); | |
1855 | #endif /* LISP_FLOAT_TYPE */ | |
1856 | ||
1857 | Qcdr = intern ("cdr"); | |
1858 | ||
1859 | /* ERROR is used as a signaler for random errors for which nothing else is right */ | |
1860 | ||
1861 | Fput (Qerror, Qerror_conditions, | |
1862 | Fcons (Qerror, Qnil)); | |
1863 | Fput (Qerror, Qerror_message, | |
1864 | build_string ("error")); | |
1865 | ||
1866 | Fput (Qquit, Qerror_conditions, | |
1867 | Fcons (Qquit, Qnil)); | |
1868 | Fput (Qquit, Qerror_message, | |
1869 | build_string ("Quit")); | |
1870 | ||
1871 | Fput (Qwrong_type_argument, Qerror_conditions, | |
1872 | Fcons (Qwrong_type_argument, Fcons (Qerror, Qnil))); | |
1873 | Fput (Qwrong_type_argument, Qerror_message, | |
1874 | build_string ("Wrong type argument")); | |
1875 | ||
1876 | Fput (Qargs_out_of_range, Qerror_conditions, | |
1877 | Fcons (Qargs_out_of_range, Fcons (Qerror, Qnil))); | |
1878 | Fput (Qargs_out_of_range, Qerror_message, | |
1879 | build_string ("Args out of range")); | |
1880 | ||
1881 | Fput (Qvoid_function, Qerror_conditions, | |
1882 | Fcons (Qvoid_function, Fcons (Qerror, Qnil))); | |
1883 | Fput (Qvoid_function, Qerror_message, | |
1884 | build_string ("Symbol's function definition is void")); | |
1885 | ||
ffd56f97 JB |
1886 | Fput (Qcyclic_function_indirection, Qerror_conditions, |
1887 | Fcons (Qcyclic_function_indirection, Fcons (Qerror, Qnil))); | |
1888 | Fput (Qcyclic_function_indirection, Qerror_message, | |
1889 | build_string ("Symbol's chain of function indirections contains a loop")); | |
1890 | ||
7921925c JB |
1891 | Fput (Qvoid_variable, Qerror_conditions, |
1892 | Fcons (Qvoid_variable, Fcons (Qerror, Qnil))); | |
1893 | Fput (Qvoid_variable, Qerror_message, | |
1894 | build_string ("Symbol's value as variable is void")); | |
1895 | ||
1896 | Fput (Qsetting_constant, Qerror_conditions, | |
1897 | Fcons (Qsetting_constant, Fcons (Qerror, Qnil))); | |
1898 | Fput (Qsetting_constant, Qerror_message, | |
1899 | build_string ("Attempt to set a constant symbol")); | |
1900 | ||
1901 | Fput (Qinvalid_read_syntax, Qerror_conditions, | |
1902 | Fcons (Qinvalid_read_syntax, Fcons (Qerror, Qnil))); | |
1903 | Fput (Qinvalid_read_syntax, Qerror_message, | |
1904 | build_string ("Invalid read syntax")); | |
1905 | ||
1906 | Fput (Qinvalid_function, Qerror_conditions, | |
1907 | Fcons (Qinvalid_function, Fcons (Qerror, Qnil))); | |
1908 | Fput (Qinvalid_function, Qerror_message, | |
1909 | build_string ("Invalid function")); | |
1910 | ||
1911 | Fput (Qwrong_number_of_arguments, Qerror_conditions, | |
1912 | Fcons (Qwrong_number_of_arguments, Fcons (Qerror, Qnil))); | |
1913 | Fput (Qwrong_number_of_arguments, Qerror_message, | |
1914 | build_string ("Wrong number of arguments")); | |
1915 | ||
1916 | Fput (Qno_catch, Qerror_conditions, | |
1917 | Fcons (Qno_catch, Fcons (Qerror, Qnil))); | |
1918 | Fput (Qno_catch, Qerror_message, | |
1919 | build_string ("No catch for tag")); | |
1920 | ||
1921 | Fput (Qend_of_file, Qerror_conditions, | |
1922 | Fcons (Qend_of_file, Fcons (Qerror, Qnil))); | |
1923 | Fput (Qend_of_file, Qerror_message, | |
1924 | build_string ("End of file during parsing")); | |
1925 | ||
1926 | Fput (Qarith_error, Qerror_conditions, | |
1927 | Fcons (Qarith_error, Fcons (Qerror, Qnil))); | |
1928 | Fput (Qarith_error, Qerror_message, | |
1929 | build_string ("Arithmetic error")); | |
1930 | ||
1931 | Fput (Qbeginning_of_buffer, Qerror_conditions, | |
1932 | Fcons (Qbeginning_of_buffer, Fcons (Qerror, Qnil))); | |
1933 | Fput (Qbeginning_of_buffer, Qerror_message, | |
1934 | build_string ("Beginning of buffer")); | |
1935 | ||
1936 | Fput (Qend_of_buffer, Qerror_conditions, | |
1937 | Fcons (Qend_of_buffer, Fcons (Qerror, Qnil))); | |
1938 | Fput (Qend_of_buffer, Qerror_message, | |
1939 | build_string ("End of buffer")); | |
1940 | ||
1941 | Fput (Qbuffer_read_only, Qerror_conditions, | |
1942 | Fcons (Qbuffer_read_only, Fcons (Qerror, Qnil))); | |
1943 | Fput (Qbuffer_read_only, Qerror_message, | |
1944 | build_string ("Buffer is read-only")); | |
1945 | ||
1946 | staticpro (&Qnil); | |
1947 | staticpro (&Qt); | |
1948 | staticpro (&Qquote); | |
1949 | staticpro (&Qlambda); | |
1950 | staticpro (&Qsubr); | |
1951 | staticpro (&Qunbound); | |
1952 | staticpro (&Qerror_conditions); | |
1953 | staticpro (&Qerror_message); | |
1954 | staticpro (&Qtop_level); | |
1955 | ||
1956 | staticpro (&Qerror); | |
1957 | staticpro (&Qquit); | |
1958 | staticpro (&Qwrong_type_argument); | |
1959 | staticpro (&Qargs_out_of_range); | |
1960 | staticpro (&Qvoid_function); | |
ffd56f97 | 1961 | staticpro (&Qcyclic_function_indirection); |
7921925c JB |
1962 | staticpro (&Qvoid_variable); |
1963 | staticpro (&Qsetting_constant); | |
1964 | staticpro (&Qinvalid_read_syntax); | |
1965 | staticpro (&Qwrong_number_of_arguments); | |
1966 | staticpro (&Qinvalid_function); | |
1967 | staticpro (&Qno_catch); | |
1968 | staticpro (&Qend_of_file); | |
1969 | staticpro (&Qarith_error); | |
1970 | staticpro (&Qbeginning_of_buffer); | |
1971 | staticpro (&Qend_of_buffer); | |
1972 | staticpro (&Qbuffer_read_only); | |
1973 | ||
1974 | staticpro (&Qlistp); | |
1975 | staticpro (&Qconsp); | |
1976 | staticpro (&Qsymbolp); | |
1977 | staticpro (&Qintegerp); | |
1978 | staticpro (&Qnatnump); | |
1979 | staticpro (&Qstringp); | |
1980 | staticpro (&Qarrayp); | |
1981 | staticpro (&Qsequencep); | |
1982 | staticpro (&Qbufferp); | |
1983 | staticpro (&Qvectorp); | |
1984 | staticpro (&Qchar_or_string_p); | |
1985 | staticpro (&Qmarkerp); | |
1986 | staticpro (&Qinteger_or_marker_p); | |
1987 | #ifdef LISP_FLOAT_TYPE | |
1988 | staticpro (&Qfloatp); | |
464f8898 RS |
1989 | staticpro (&Qnumberp); |
1990 | staticpro (&Qnumber_or_marker_p); | |
7921925c JB |
1991 | #endif /* LISP_FLOAT_TYPE */ |
1992 | ||
1993 | staticpro (&Qboundp); | |
1994 | staticpro (&Qfboundp); | |
1995 | staticpro (&Qcdr); | |
1996 | ||
1997 | defsubr (&Seq); | |
1998 | defsubr (&Snull); | |
1999 | defsubr (&Slistp); | |
2000 | defsubr (&Snlistp); | |
2001 | defsubr (&Sconsp); | |
2002 | defsubr (&Satom); | |
2003 | defsubr (&Sintegerp); | |
464f8898 | 2004 | defsubr (&Sinteger_or_marker_p); |
7921925c JB |
2005 | defsubr (&Snumberp); |
2006 | defsubr (&Snumber_or_marker_p); | |
464f8898 RS |
2007 | #ifdef LISP_FLOAT_TYPE |
2008 | defsubr (&Sfloatp); | |
7921925c JB |
2009 | #endif /* LISP_FLOAT_TYPE */ |
2010 | defsubr (&Snatnump); | |
2011 | defsubr (&Ssymbolp); | |
2012 | defsubr (&Sstringp); | |
2013 | defsubr (&Svectorp); | |
2014 | defsubr (&Sarrayp); | |
2015 | defsubr (&Ssequencep); | |
2016 | defsubr (&Sbufferp); | |
2017 | defsubr (&Smarkerp); | |
7921925c JB |
2018 | defsubr (&Ssubrp); |
2019 | defsubr (&Scompiled_function_p); | |
2020 | defsubr (&Schar_or_string_p); | |
2021 | defsubr (&Scar); | |
2022 | defsubr (&Scdr); | |
2023 | defsubr (&Scar_safe); | |
2024 | defsubr (&Scdr_safe); | |
2025 | defsubr (&Ssetcar); | |
2026 | defsubr (&Ssetcdr); | |
2027 | defsubr (&Ssymbol_function); | |
ffd56f97 | 2028 | defsubr (&Sindirect_function); |
7921925c JB |
2029 | defsubr (&Ssymbol_plist); |
2030 | defsubr (&Ssymbol_name); | |
2031 | defsubr (&Smakunbound); | |
2032 | defsubr (&Sfmakunbound); | |
2033 | defsubr (&Sboundp); | |
2034 | defsubr (&Sfboundp); | |
2035 | defsubr (&Sfset); | |
2036 | defsubr (&Ssetplist); | |
2037 | defsubr (&Ssymbol_value); | |
2038 | defsubr (&Sset); | |
2039 | defsubr (&Sdefault_boundp); | |
2040 | defsubr (&Sdefault_value); | |
2041 | defsubr (&Sset_default); | |
2042 | defsubr (&Ssetq_default); | |
2043 | defsubr (&Smake_variable_buffer_local); | |
2044 | defsubr (&Smake_local_variable); | |
2045 | defsubr (&Skill_local_variable); | |
2046 | defsubr (&Saref); | |
2047 | defsubr (&Saset); | |
2048 | defsubr (&Sint_to_string); | |
2049 | defsubr (&Sstring_to_int); | |
2050 | defsubr (&Seqlsign); | |
2051 | defsubr (&Slss); | |
2052 | defsubr (&Sgtr); | |
2053 | defsubr (&Sleq); | |
2054 | defsubr (&Sgeq); | |
2055 | defsubr (&Sneq); | |
2056 | defsubr (&Szerop); | |
2057 | defsubr (&Splus); | |
2058 | defsubr (&Sminus); | |
2059 | defsubr (&Stimes); | |
2060 | defsubr (&Squo); | |
2061 | defsubr (&Srem); | |
2062 | defsubr (&Smax); | |
2063 | defsubr (&Smin); | |
2064 | defsubr (&Slogand); | |
2065 | defsubr (&Slogior); | |
2066 | defsubr (&Slogxor); | |
2067 | defsubr (&Slsh); | |
2068 | defsubr (&Sash); | |
2069 | defsubr (&Sadd1); | |
2070 | defsubr (&Ssub1); | |
2071 | defsubr (&Slognot); | |
2072 | } | |
2073 | ||
a33ef3ab | 2074 | SIGTYPE |
7921925c JB |
2075 | arith_error (signo) |
2076 | int signo; | |
2077 | { | |
2078 | #ifdef USG | |
2079 | /* USG systems forget handlers when they are used; | |
2080 | must reestablish each time */ | |
2081 | signal (signo, arith_error); | |
2082 | #endif /* USG */ | |
2083 | #ifdef VMS | |
2084 | /* VMS systems are like USG. */ | |
2085 | signal (signo, arith_error); | |
2086 | #endif /* VMS */ | |
2087 | #ifdef BSD4_1 | |
2088 | sigrelse (SIGFPE); | |
2089 | #else /* not BSD4_1 */ | |
e065a56e | 2090 | sigsetmask (SIGEMPTYMASK); |
7921925c JB |
2091 | #endif /* not BSD4_1 */ |
2092 | ||
2093 | Fsignal (Qarith_error, Qnil); | |
2094 | } | |
2095 | ||
2096 | init_data () | |
2097 | { | |
2098 | /* Don't do this if just dumping out. | |
2099 | We don't want to call `signal' in this case | |
2100 | so that we don't have trouble with dumping | |
2101 | signal-delivering routines in an inconsistent state. */ | |
2102 | #ifndef CANNOT_DUMP | |
2103 | if (!initialized) | |
2104 | return; | |
2105 | #endif /* CANNOT_DUMP */ | |
2106 | signal (SIGFPE, arith_error); | |
f58b3686 | 2107 | |
7921925c JB |
2108 | #ifdef uts |
2109 | signal (SIGEMT, arith_error); | |
2110 | #endif /* uts */ | |
2111 | } |